leafmap module¶
Main module.
ImageOverlay (ImageOverlay)
¶
ImageOverlay class.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
url |
str |
http URL or local file path to the image. |
required |
bounds |
tuple |
bounding box of the image in the format of (lower_left(lat, lon), upper_right(lat, lon)), such as ((13, -130), (32, -100)). |
required |
Source code in leafmap/leafmap.py
class ImageOverlay(ipyleaflet.ImageOverlay):
"""ImageOverlay class.
Args:
url (str): http URL or local file path to the image.
bounds (tuple): bounding box of the image in the format of (lower_left(lat, lon), upper_right(lat, lon)), such as ((13, -130), (32, -100)).
"""
def __init__(self, **kwargs):
from base64 import b64encode
from PIL import Image, ImageSequence
from io import BytesIO
try:
url = kwargs.get("url")
if not url.startswith("http"):
url = os.path.abspath(url)
if not os.path.exists(url):
raise FileNotFoundError("The provided file does not exist.")
ext = os.path.splitext(url)[1][1:] # file extension
image = Image.open(url)
f = BytesIO()
if ext.lower() == "gif":
frames = []
# Loop over each frame in the animated image
for frame in ImageSequence.Iterator(image):
frame = frame.convert("RGBA")
b = BytesIO()
frame.save(b, format="gif")
frame = Image.open(b)
frames.append(frame)
frames[0].save(
f,
format="GIF",
save_all=True,
append_images=frames[1:],
loop=0,
)
else:
image.save(f, ext)
data = b64encode(f.getvalue())
data = data.decode("ascii")
url = "data:image/{};base64,".format(ext) + data
kwargs["url"] = url
except Exception as e:
raise Exception(e)
super().__init__(**kwargs)
Map (Map)
¶
The Map class inherits ipyleaflet.Map. The arguments you can pass to the Map can be found at https://ipyleaflet.readthedocs.io/en/latest/api_reference/map.html. By default, the Map will add OpenStreetMap as the basemap.
Returns:
| Type | Description |
|---|---|
object |
ipyleaflet map object. |
Source code in leafmap/leafmap.py
class Map(ipyleaflet.Map):
"""The Map class inherits ipyleaflet.Map. The arguments you can pass to the Map can be found at https://ipyleaflet.readthedocs.io/en/latest/api_reference/map.html. By default, the Map will add OpenStreetMap as the basemap.
Returns:
object: ipyleaflet map object.
"""
def __init__(self, **kwargs):
if "center" not in kwargs:
kwargs["center"] = [20, 0]
if "zoom" not in kwargs:
kwargs["zoom"] = 2
if "max_zoom" not in kwargs:
kwargs["max_zoom"] = 24
if "scroll_wheel_zoom" not in kwargs:
kwargs["scroll_wheel_zoom"] = True
if "basemap" in kwargs:
if isinstance(kwargs["basemap"], str):
kwargs["basemap"] = get_basemap(kwargs["basemap"])
super().__init__(**kwargs)
self.baseclass = "ipyleaflet"
self.toolbar = None
self.toolbar_button = None
self.tool_output = None
self.tool_output_ctrl = None
self.layer_control = None
self.draw_control = None
self.search_control = None
self.user_roi = None
self.user_rois = None
self.draw_features = []
self.api_keys = {}
self.geojson_layers = []
self.edit_mode = False
self.edit_props = []
# sandbox path for Voila app to restrict access to system directories.
if "sandbox_path" not in kwargs:
if os.environ.get("USE_VOILA") is not None:
self.sandbox_path = os.getcwd()
else:
self.sandbox_path = None
else:
if os.path.exists(os.path.abspath(kwargs["sandbox_path"])):
self.sandbox_path = kwargs["sandbox_path"]
else:
print("The sandbox path is invalid.")
self.sandbox_path = None
if "height" not in kwargs:
self.layout.height = "500px"
else:
if isinstance(kwargs["height"], int):
kwargs["height"] = str(kwargs["height"]) + "px"
self.layout.height = kwargs["height"]
if "width" in kwargs:
if isinstance(kwargs["width"], int):
kwargs["width"] = str(kwargs["width"]) + "px"
self.layout.width = kwargs["width"]
if "layers_control" not in kwargs:
kwargs["layers_control"] = False
if kwargs["layers_control"]:
self.add(ipyleaflet.LayersControl(position="topright"))
if "fullscreen_control" not in kwargs:
kwargs["fullscreen_control"] = True
if kwargs["fullscreen_control"]:
self.add(ipyleaflet.FullScreenControl())
if "search_control" not in kwargs:
kwargs["search_control"] = True
if kwargs["search_control"]:
url = "https://nominatim.openstreetmap.org/search?format=json&q={s}"
search_control = ipyleaflet.SearchControl(
position="topleft",
url=url,
zoom=12,
marker=None,
)
self.add(search_control)
self.search_control = search_control
if "draw_control" not in kwargs:
kwargs["draw_control"] = True
if "repeat_mode" not in kwargs:
repeat_mode = False
else:
repeat_mode = kwargs["repeat_mode"]
kwargs.pop("repeat_mode")
if kwargs["draw_control"]:
draw_control = ipyleaflet.DrawControl(
polyline={"repeatMode": repeat_mode},
polygon={"repeatMode": repeat_mode},
marker={
"shapeOptions": {"color": "#3388ff"},
"repeatMode": repeat_mode,
},
rectangle={
"shapeOptions": {"color": "#3388ff"},
"repeatMode": repeat_mode,
},
circle={
"shapeOptions": {"color": "#3388ff"},
"repeatMode": repeat_mode,
},
# circlemarker={"repeatMode": repeat_mode},
edit=True,
remove=True,
position="topleft",
)
draw_control.circlemarker = {}
self.add(draw_control)
self.draw_control = draw_control
def handle_draw(target, action, geo_json):
if "style" in geo_json["properties"]:
del geo_json["properties"]["style"]
self.user_roi = geo_json
if action in ["created", "edited"]:
# feature = {
# "type": "Feature",
# "geometry": geo_json["geometry"],
# }
self.draw_features.append(geo_json)
elif action == "deleted":
geometries = [
feature["geometry"] for feature in self.draw_control.data
]
for geom in geometries:
if geom == geo_json["geometry"]:
geometries.remove(geom)
for feature in self.draw_features:
if feature["geometry"] not in geometries:
self.draw_features.remove(feature)
if self.edit_mode:
import ipysheet
with self.edit_output:
self.edit_output.outputs = ()
self.edit_sheet = ipysheet.from_dataframe(
self.get_draw_props(n=self.num_attributes, return_df=True)
)
display(self.edit_sheet)
self.user_rois = {
"type": "FeatureCollection",
"features": self.draw_features,
}
draw_control.on_draw(handle_draw)
if "measure_control" not in kwargs:
kwargs["measure_control"] = True
if kwargs["measure_control"]:
self.add(ipyleaflet.MeasureControl(position="topleft"))
if "scale_control" not in kwargs:
kwargs["scale_control"] = True
if kwargs["scale_control"]:
self.add(ipyleaflet.ScaleControl(position="bottomleft"))
self.layers[0].name = "OpenStreetMap"
if "toolbar_control" not in kwargs:
kwargs["toolbar_control"] = True
if kwargs["toolbar_control"]:
from .toolbar import main_toolbar
main_toolbar(self)
if "use_voila" not in kwargs:
kwargs["use_voila"] = False
if "catalog_source" in kwargs:
self.set_catalog_source(kwargs["catalog_source"])
def add(self, object):
"""Adds a layer to the map.
Args:
layer (object): The layer to add to the map.
"""
if isinstance(object, str):
if object in basemaps.keys():
object = get_basemap(object)
super().add(object)
if hasattr(self, "layer_manager_widget"):
self.update_layer_manager()
def set_center(self, lon, lat, zoom=None):
"""Centers the map view at a given coordinates with the given zoom level.
Args:
lon (float): The longitude of the center, in degrees.
lat (float): The latitude of the center, in degrees.
zoom (int, optional): The zoom level, from 1 to 24. Defaults to None.
"""
self.center = (lat, lon)
if zoom is not None:
self.zoom = zoom
def zoom_to_bounds(self, bounds):
"""Zooms to a bounding box in the form of [minx, miny, maxx, maxy].
Args:
bounds (list | tuple): A list/tuple containing minx, miny, maxx, maxy values for the bounds.
"""
# The ipyleaflet fit_bounds method takes lat/lon bounds in the form [[south, west], [north, east]].
self.fit_bounds([[bounds[1], bounds[0]], [bounds[3], bounds[2]]])
def zoom_to_gdf(self, gdf):
"""Zooms to the bounding box of a GeoPandas GeoDataFrame.
Args:
gdf (GeoDataFrame): A GeoPandas GeoDataFrame.
"""
bounds = gdf.total_bounds
self.zoom_to_bounds(bounds)
def get_scale(self):
"""Returns the approximate pixel scale of the current map view, in meters.
Returns:
float: Map resolution in meters.
"""
import math
zoom_level = self.zoom
# Reference: https://blogs.bing.com/maps/2006/02/25/map-control-zoom-levels-gt-resolution
resolution = 156543.04 * math.cos(0) / math.pow(2, zoom_level)
return resolution
def get_layer_names(self):
"""Gets layer names as a list.
Returns:
list: A list of layer names.
"""
layer_names = []
for layer in list(self.layers):
if len(layer.name) > 0:
layer_names.append(layer.name)
return layer_names
def add_marker(self, location, **kwargs):
"""Adds a marker to the map. More info about marker at https://ipyleaflet.readthedocs.io/en/latest/api_reference/marker.html.
Args:
location (list | tuple): The location of the marker in the format of [lat, lng].
**kwargs: Keyword arguments for the marker.
"""
if isinstance(location, list):
location = tuple(location)
if isinstance(location, tuple):
marker = ipyleaflet.Marker(location=location, **kwargs)
self.add(marker)
else:
raise TypeError("The location must be a list or a tuple.")
def add_basemap(self, basemap="HYBRID", show=True, **kwargs):
"""Adds a basemap to the map.
Args:
basemap (str, optional): Can be one of string from basemaps. Defaults to 'HYBRID'.
visible (bool, optional): Whether the basemap is visible or not. Defaults to True.
**kwargs: Keyword arguments for the TileLayer.
"""
import xyzservices
try:
layer_names = self.get_layer_names()
map_dict = {
"ROADMAP": "Google Maps",
"SATELLITE": "Google Satellite",
"TERRAIN": "Google Terrain",
"HYBRID": "Google Hybrid",
}
if isinstance(basemap, str):
if basemap.upper() in map_dict:
layer = get_google_map(basemap.upper(), **kwargs)
layer.visible = show
self.add(layer)
return
if isinstance(basemap, xyzservices.TileProvider):
name = basemap.name
url = basemap.build_url()
attribution = basemap.attribution
if "max_zoom" in basemap.keys():
max_zoom = basemap["max_zoom"]
else:
max_zoom = 22
layer = ipyleaflet.TileLayer(
url=url,
name=name,
max_zoom=max_zoom,
attribution=attribution,
visible=show,
**kwargs,
)
self.add(layer)
arc_add_layer(url, name)
elif basemap in basemaps and basemaps[basemap].name not in layer_names:
self.add(basemap)
self.layers[-1].visible = show
arc_add_layer(basemaps[basemap].url, basemap)
elif basemap in basemaps and basemaps[basemap].name in layer_names:
print(f"{basemap} has been already added before.")
else:
print(
"Basemap can only be one of the following:\n {}".format(
"\n ".join(basemaps.keys())
)
)
except Exception as e:
raise ValueError(
"Basemap can only be one of the following:\n {}".format(
"\n ".join(basemaps.keys())
)
)
def find_layer(self, name):
"""Finds layer by name
Args:
name (str): Name of the layer to find.
Returns:
object: ipyleaflet layer object.
"""
layers = self.layers
for layer in layers:
if layer.name == name:
return layer
return None
def find_layer_index(self, name):
"""Finds layer index by name
Args:
name (str): Name of the layer to find.
Returns:
int: Index of the layer with the specified name
"""
layers = self.layers
for index, layer in enumerate(layers):
if layer.name == name:
return index
return -1
def add_layer(self, layer):
"""Adds a layer to the map.
Args:
layer (ipyleaflet layer): The layer to be added.
"""
existing_layer = self.find_layer(layer.name)
if existing_layer is not None:
self.remove_layer(existing_layer)
super().add(layer)
def add_ee_layer(
self,
asset_id: str,
name: str = None,
attribution: str = "Google Earth Engine",
shown: bool = True,
opacity: float = 1.0,
**kwargs,
) -> None:
"""
Adds a Google Earth Engine tile layer to the map based on the tile layer URL from
https://github.com/opengeos/ee-tile-layers/blob/main/datasets.tsv.
Args:
asset_id (str): The ID of the Earth Engine asset.
name (str, optional): The name of the tile layer. If not provided, the asset ID will be used. Default is None.
attribution (str, optional): The attribution text to be displayed. Default is "Google Earth Engine".
shown (bool, optional): Whether the tile layer should be shown on the map. Default is True.
opacity (float, optional): The opacity of the tile layer. Default is 1.0.
**kwargs: Additional keyword arguments to be passed to the underlying `add_tile_layer` method.
Returns:
None
"""
import pandas as pd
df = pd.read_csv(
"https://raw.githubusercontent.com/opengeos/ee-tile-layers/main/datasets.tsv",
sep="\t",
)
asset_id = asset_id.strip()
if name is None:
name = asset_id
if asset_id in df["id"].values:
url = df.loc[df["id"] == asset_id, "url"].values[0]
self.add_tile_layer(
url,
name,
attribution=attribution,
shown=shown,
opacity=opacity,
**kwargs,
)
else:
print(f"The provided EE tile layer {asset_id} does not exist.")
def add_layer_control(self, position="topright"):
"""Adds a layer control to the map.
Args:
position (str, optional): The position of the layer control. Defaults to 'topright'.
"""
self.add(ipyleaflet.LayersControl(position=position))
def layer_opacity(self, name, value=1.0):
"""Changes layer opacity.
Args:
name (str): The name of the layer to change opacity.
value (float, optional): The opacity value to set. Defaults to 1.0.
"""
layer = self.find_layer(name)
try:
layer.opacity = value
except Exception as e:
raise Exception(e)
def add_wms_layer(
self,
url,
layers,
name=None,
attribution="",
format="image/png",
transparent=True,
opacity=1.0,
shown=True,
**kwargs,
):
"""Add a WMS layer to the map.
Args:
url (str): The URL of the WMS web service.
layers (str): Comma-separated list of WMS layers to show.
name (str, optional): The layer name to use on the layer control. Defaults to None.
attribution (str, optional): The attribution of the data layer. Defaults to ''.
format (str, optional): WMS image format (use ‘image/png’ for layers with transparency). Defaults to 'image/png'.
transparent (bool, optional): If True, the WMS service will return images with transparency. Defaults to True.
opacity (float, optional): The opacity of the layer. Defaults to 1.0.
shown (bool, optional): A flag indicating whether the layer should be on by default. Defaults to True.
"""
if name is None:
name = str(layers)
try:
wms_layer = ipyleaflet.WMSLayer(
url=url,
layers=layers,
name=name,
attribution=attribution,
format=format,
transparent=transparent,
opacity=opacity,
visible=shown,
**kwargs,
)
self.add(wms_layer)
except Exception as e:
print("Failed to add the specified WMS TileLayer.")
raise Exception(e)
def add_tile_layer(
self,
url,
name,
attribution,
opacity=1.0,
shown=True,
**kwargs,
):
"""Adds a TileLayer to the map.
Args:
url (str): The URL of the tile layer.
name (str): The layer name to use for the layer.
attribution (str): The attribution to use.
opacity (float, optional): The opacity of the layer. Defaults to 1.
shown (bool, optional): A flag indicating whether the layer should be on by default. Defaults to True.
"""
if "max_zoom" not in kwargs:
kwargs["max_zoom"] = 100
if "max_native_zoom" not in kwargs:
kwargs["max_native_zoom"] = 100
try:
tile_layer = ipyleaflet.TileLayer(
url=url,
name=name,
attribution=attribution,
opacity=opacity,
visible=shown,
**kwargs,
)
self.add(tile_layer)
arc_add_layer(url, name, shown, opacity)
except Exception as e:
print("Failed to add the specified TileLayer.")
raise Exception(e)
def add_vector_tile(
self,
url,
attribution="",
styles={},
layer_name="Vector Tile",
**kwargs,
):
"""Adds a VectorTileLayer to the map. It wraps the ipyleaflet.VectorTileLayer class. See
https://ipyleaflet.readthedocs.io/en/latest/layers/vector_tile.html
Args:
url (str, optional): The URL of the tile layer, such as
'https://tile.nextzen.org/tilezen/vector/v1/512/all/{z}/{x}/{y}.mvt?api_key=gCZXZglvRQa6sB2z7JzL1w'.
attribution (str, optional): The attribution to use. Defaults to ''.
styles (dict,optional): Style dict, specific to the vector tile source.
layer_name (str, optional): The layer name to use for the layer. Defaults to 'Vector Tile'.
kwargs: Additional keyword arguments to pass to the ipyleaflet.VectorTileLayer class.
"""
if "vector_tile_layer_styles" in kwargs:
styles = kwargs["vector_tile_layer_styles"]
del kwargs["vector_tile_layer_styles"]
try:
vector_tile_layer = ipyleaflet.VectorTileLayer(
url=url,
attribution=attribution,
vector_tile_layer_styles=styles,
**kwargs,
)
vector_tile_layer.name = layer_name
self.add(vector_tile_layer)
except Exception as e:
print("Failed to add the specified VectorTileLayer.")
raise Exception(e)
add_vector_tile_layer = add_vector_tile
def add_pmtiles(
self,
url,
style=None,
name="PMTiles",
show=True,
zoom_to_layer=True,
**kwargs,
):
"""
Adds a PMTiles layer to the map. This function is not officially supported yet by ipyleaflet yet.
Install it with the following command:
pip install git+https://github.com/giswqs/ipyleaflet.git@pmtiles
Args:
url (str): The URL of the PMTiles file.
style (str, optional): The CSS style to apply to the layer. Defaults to None.
See https://docs.mapbox.com/style-spec/reference/layers/ for more info.
name (str, optional): The name of the layer. Defaults to None.
show (bool, optional): Whether the layer should be shown initially. Defaults to True.
zoom_to_layer (bool, optional): Whether to zoom to the layer extent. Defaults to True.
**kwargs: Additional keyword arguments to pass to the PMTilesLayer constructor.
Returns:
None
"""
try:
if "sources" in kwargs:
del kwargs["sources"]
if "version" in kwargs:
del kwargs["version"]
if style is None:
style = pmtiles_style(url)
layer = ipyleaflet.PMTilesLayer(
url=url,
style=style,
name=name,
visible=show,
**kwargs,
)
self.add(layer)
if zoom_to_layer:
metadata = pmtiles_metadata(url)
bounds = metadata["bounds"]
self.zoom_to_bounds(bounds)
except Exception as e:
print(e)
def add_osm_from_geocode(
self,
query,
which_result=None,
by_osmid=False,
buffer_dist=None,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
):
"""Adds OSM data of place(s) by name or ID to the map.
Args:
query (str | dict | list): Query string(s) or structured dict(s) to geocode.
which_result (int, optional): Which geocoding result to use. if None, auto-select the first (Multi)Polygon or raise an error if OSM doesn't return one. to get the top match regardless of geometry type, set which_result=1. Defaults to None.
by_osmid (bool, optional): If True, handle query as an OSM ID for lookup rather than text search. Defaults to False.
buffer_dist (float, optional): Distance to buffer around the place geometry, in meters. Defaults to None.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
"""
gdf = osm_gdf_from_geocode(
query, which_result=which_result, by_osmid=by_osmid, buffer_dist=buffer_dist
)
geojson = gdf.__geo_interface__
self.add_geojson(
geojson,
layer_name=layer_name,
style=style,
hover_style=hover_style,
style_callback=style_callback,
fill_colors=fill_colors,
info_mode=info_mode,
)
self.zoom_to_gdf(gdf)
def add_osm_from_address(
self,
address,
tags,
dist=1000,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
):
"""Adds OSM entities within some distance N, S, E, W of address to the map.
Args:
address (str): The address to geocode and use as the central point around which to get the geometries.
tags (dict): Dict of tags used for finding objects in the selected area. Results returned are the union, not intersection of each individual tag. Each result matches at least one given tag. The dict keys should be OSM tags, (e.g., building, landuse, highway, etc) and the dict values should be either True to retrieve all items with the given tag, or a string to get a single tag-value combination, or a list of strings to get multiple values for the given tag. For example, tags = {‘building’: True} would return all building footprints in the area. tags = {‘amenity’:True, ‘landuse’:[‘retail’,’commercial’], ‘highway’:’bus_stop’} would return all amenities, landuse=retail, landuse=commercial, and highway=bus_stop.
dist (int, optional): Distance in meters. Defaults to 1000.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
"""
gdf = osm_gdf_from_address(address, tags, dist)
geojson = gdf.__geo_interface__
self.add_geojson(
geojson,
layer_name=layer_name,
style=style,
hover_style=hover_style,
style_callback=style_callback,
fill_colors=fill_colors,
info_mode=info_mode,
)
self.zoom_to_gdf(gdf)
def add_osm_from_place(
self,
query,
tags,
which_result=None,
buffer_dist=None,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
):
"""Adds OSM entities within boundaries of geocodable place(s) to the map.
Args:
query (str | dict | list): Query string(s) or structured dict(s) to geocode.
tags (dict): Dict of tags used for finding objects in the selected area. Results returned are the union, not intersection of each individual tag. Each result matches at least one given tag. The dict keys should be OSM tags, (e.g., building, landuse, highway, etc) and the dict values should be either True to retrieve all items with the given tag, or a string to get a single tag-value combination, or a list of strings to get multiple values for the given tag. For example, tags = {‘building’: True} would return all building footprints in the area. tags = {‘amenity’:True, ‘landuse’:[‘retail’,’commercial’], ‘highway’:’bus_stop’} would return all amenities, landuse=retail, landuse=commercial, and highway=bus_stop.
which_result (int, optional): Which geocoding result to use. if None, auto-select the first (Multi)Polygon or raise an error if OSM doesn't return one. to get the top match regardless of geometry type, set which_result=1. Defaults to None.
buffer_dist (float, optional): Distance to buffer around the place geometry, in meters. Defaults to None.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
"""
gdf = osm_gdf_from_place(query, tags, which_result, buffer_dist)
geojson = gdf.__geo_interface__
self.add_geojson(
geojson,
layer_name=layer_name,
style=style,
hover_style=hover_style,
style_callback=style_callback,
fill_colors=fill_colors,
info_mode=info_mode,
)
self.zoom_to_gdf(gdf)
def add_osm_from_point(
self,
center_point,
tags,
dist=1000,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
):
"""Adds OSM entities within some distance N, S, E, W of a point to the map.
Args:
center_point (tuple): The (lat, lng) center point around which to get the geometries.
tags (dict): Dict of tags used for finding objects in the selected area. Results returned are the union, not intersection of each individual tag. Each result matches at least one given tag. The dict keys should be OSM tags, (e.g., building, landuse, highway, etc) and the dict values should be either True to retrieve all items with the given tag, or a string to get a single tag-value combination, or a list of strings to get multiple values for the given tag. For example, tags = {‘building’: True} would return all building footprints in the area. tags = {‘amenity’:True, ‘landuse’:[‘retail’,’commercial’], ‘highway’:’bus_stop’} would return all amenities, landuse=retail, landuse=commercial, and highway=bus_stop.
dist (int, optional): Distance in meters. Defaults to 1000.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
"""
gdf = osm_gdf_from_point(center_point, tags, dist)
geojson = gdf.__geo_interface__
self.add_geojson(
geojson,
layer_name=layer_name,
style=style,
hover_style=hover_style,
style_callback=style_callback,
fill_colors=fill_colors,
info_mode=info_mode,
)
self.zoom_to_gdf(gdf)
def add_osm_from_polygon(
self,
polygon,
tags,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
):
"""Adds OSM entities within boundaries of a (multi)polygon to the map.
Args:
polygon (shapely.geometry.Polygon | shapely.geometry.MultiPolygon): Geographic boundaries to fetch geometries within
tags (dict): Dict of tags used for finding objects in the selected area. Results returned are the union, not intersection of each individual tag. Each result matches at least one given tag. The dict keys should be OSM tags, (e.g., building, landuse, highway, etc) and the dict values should be either True to retrieve all items with the given tag, or a string to get a single tag-value combination, or a list of strings to get multiple values for the given tag. For example, tags = {‘building’: True} would return all building footprints in the area. tags = {‘amenity’:True, ‘landuse’:[‘retail’,’commercial’], ‘highway’:’bus_stop’} would return all amenities, landuse=retail, landuse=commercial, and highway=bus_stop.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
"""
gdf = osm_gdf_from_polygon(polygon, tags)
geojson = gdf.__geo_interface__
self.add_geojson(
geojson,
layer_name=layer_name,
style=style,
hover_style=hover_style,
style_callback=style_callback,
fill_colors=fill_colors,
info_mode=info_mode,
)
self.zoom_to_gdf(gdf)
def add_osm_from_bbox(
self,
north,
south,
east,
west,
tags,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
):
"""Adds OSM entities within a N, S, E, W bounding box to the map.
Args:
north (float): Northern latitude of bounding box.
south (float): Southern latitude of bounding box.
east (float): Eastern longitude of bounding box.
west (float): Western longitude of bounding box.
tags (dict): Dict of tags used for finding objects in the selected area. Results returned are the union, not intersection of each individual tag. Each result matches at least one given tag. The dict keys should be OSM tags, (e.g., building, landuse, highway, etc) and the dict values should be either True to retrieve all items with the given tag, or a string to get a single tag-value combination, or a list of strings to get multiple values for the given tag. For example, tags = {‘building’: True} would return all building footprints in the area. tags = {‘amenity’:True, ‘landuse’:[‘retail’,’commercial’], ‘highway’:’bus_stop’} would return all amenities, landuse=retail, landuse=commercial, and highway=bus_stop.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
"""
gdf = osm_gdf_from_bbox(north, south, east, west, tags)
geojson = gdf.__geo_interface__
self.add_geojson(
geojson,
layer_name=layer_name,
style=style,
hover_style=hover_style,
style_callback=style_callback,
fill_colors=fill_colors,
info_mode=info_mode,
)
self.zoom_to_gdf(gdf)
def add_osm_from_view(
self,
tags,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
):
"""Adds OSM entities within the current map view to the map.
Args:
tags (dict): Dict of tags used for finding objects in the selected area. Results returned are the union, not intersection of each individual tag. Each result matches at least one given tag. The dict keys should be OSM tags, (e.g., building, landuse, highway, etc) and the dict values should be either True to retrieve all items with the given tag, or a string to get a single tag-value combination, or a list of strings to get multiple values for the given tag. For example, tags = {‘building’: True} would return all building footprints in the area. tags = {‘amenity’:True, ‘landuse’:[‘retail’,’commercial’], ‘highway’:’bus_stop’} would return all amenities, landuse=retail, landuse=commercial, and highway=bus_stop.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
"""
bounds = self.bounds
if len(bounds) == 0:
bounds = (
(40.74824858675827, -73.98933637940563),
(40.75068694343106, -73.98364473187601),
)
north, south, east, west = (
bounds[1][0],
bounds[0][0],
bounds[1][1],
bounds[0][1],
)
gdf = osm_gdf_from_bbox(north, south, east, west, tags)
geojson = gdf.__geo_interface__
self.add_geojson(
geojson,
layer_name=layer_name,
style=style,
hover_style=hover_style,
style_callback=style_callback,
fill_colors=fill_colors,
info_mode=info_mode,
)
self.zoom_to_gdf(gdf)
def add_cog_layer(
self,
url,
name="Untitled",
attribution="",
opacity=1.0,
shown=True,
bands=None,
titiler_endpoint=None,
zoom_to_layer=True,
**kwargs,
):
"""Adds a COG TileLayer to the map.
Args:
url (str): The URL of the COG tile layer.
name (str, optional): The layer name to use for the layer. Defaults to 'Untitled'.
attribution (str, optional): The attribution to use. Defaults to ''.
opacity (float, optional): The opacity of the layer. Defaults to 1.
shown (bool, optional): A flag indicating whether the layer should be on by default. Defaults to True.
bands (list, optional): A list of bands to use for the layer. Defaults to None.
titiler_endpoint (str, optional): Titiler endpoint. Defaults to "https://titiler.xyz".
zoom_to_layer (bool, optional): Whether to zoom to the layer extent. Defaults to True.
**kwargs: Arbitrary keyword arguments, including bidx, expression, nodata, unscale, resampling, rescale,
color_formula, colormap, colormap_name, return_mask. See https://developmentseed.org/titiler/endpoints/cog/
and https://cogeotiff.github.io/rio-tiler/colormap/. To select a certain bands, use bidx=[1, 2, 3].
apply a rescaling to multiple bands, use something like `rescale=["164,223","130,211","99,212"]`.
"""
tile_url = cog_tile(url, bands, titiler_endpoint, **kwargs)
bounds = cog_bounds(url, titiler_endpoint)
self.add_tile_layer(tile_url, name, attribution, opacity, shown)
if zoom_to_layer:
self.fit_bounds([[bounds[1], bounds[0]], [bounds[3], bounds[2]]])
arc_zoom_to_extent(bounds[0], bounds[1], bounds[2], bounds[3])
if not hasattr(self, "cog_layer_dict"):
self.cog_layer_dict = {}
params = {
"url": url,
"titizer_endpoint": titiler_endpoint,
"bounds": bounds,
"type": "COG",
}
self.cog_layer_dict[name] = params
def add_cog_mosaic(self, **kwargs):
raise NotImplementedError(
"This function is no longer supported.See https://github.com/opengeos/leafmap/issues/180."
)
def add_cog_mosaic_from_file(self, **kwargs):
raise NotImplementedError(
"This function is no longer supported.See https://github.com/opengeos/leafmap/issues/180."
)
def add_stac_layer(
self,
url=None,
collection=None,
item=None,
assets=None,
bands=None,
titiler_endpoint=None,
name="STAC Layer",
attribution="",
opacity=1.0,
shown=True,
fit_bounds=True,
**kwargs,
):
"""Adds a STAC TileLayer to the map.
Args:
url (str): HTTP URL to a STAC item, e.g., https://canada-spot-ortho.s3.amazonaws.com/canada_spot_orthoimages/canada_spot5_orthoimages/S5_2007/S5_11055_6057_20070622/S5_11055_6057_20070622.json
collection (str): The Microsoft Planetary Computer STAC collection ID, e.g., landsat-8-c2-l2.
item (str): The Microsoft Planetary Computer STAC item ID, e.g., LC08_L2SP_047027_20201204_02_T1.
assets (str | list): The Microsoft Planetary Computer STAC asset ID, e.g., ["SR_B7", "SR_B5", "SR_B4"].
bands (list): A list of band names, e.g., ["SR_B7", "SR_B5", "SR_B4"]
titiler_endpoint (str, optional): Titiler endpoint, e.g., "https://titiler.xyz", "https://planetarycomputer.microsoft.com/api/data/v1", "planetary-computer", "pc". Defaults to None.
name (str, optional): The layer name to use for the layer. Defaults to 'STAC Layer'.
attribution (str, optional): The attribution to use. Defaults to ''.
opacity (float, optional): The opacity of the layer. Defaults to 1.
shown (bool, optional): A flag indicating whether the layer should be on by default. Defaults to True.
fit_bounds (bool, optional): A flag indicating whether the map should be zoomed to the layer extent. Defaults to True.
"""
tile_url = stac_tile(
url, collection, item, assets, bands, titiler_endpoint, **kwargs
)
bounds = stac_bounds(url, collection, item, titiler_endpoint)
self.add_tile_layer(tile_url, name, attribution, opacity, shown)
if fit_bounds:
self.fit_bounds([[bounds[1], bounds[0]], [bounds[3], bounds[2]]])
arc_zoom_to_extent(bounds[0], bounds[1], bounds[2], bounds[3])
if not hasattr(self, "cog_layer_dict"):
self.cog_layer_dict = {}
if assets is None and bands is not None:
assets = bands
params = {
"url": url,
"collection": collection,
"item": item,
"assets": assets,
"bounds": bounds,
"titiler_endpoint": titiler_endpoint,
"type": "STAC",
}
self.cog_layer_dict[name] = params
def add_mosaic_layer(
self,
url=None,
titiler_endpoint=None,
name="Mosaic Layer",
attribution="",
opacity=1.0,
shown=True,
**kwargs,
):
"""Adds a STAC TileLayer to the map.
Args:
url (str): HTTP URL to a MosaicJSON.
titiler_endpoint (str, optional): Titiler endpoint, e.g., "https://titiler.xyz". Defaults to None.
name (str, optional): The layer name to use for the layer. Defaults to 'Mosaic Layer'.
attribution (str, optional): The attribution to use. Defaults to ''.
opacity (float, optional): The opacity of the layer. Defaults to 1.
shown (bool, optional): A flag indicating whether the layer should be on by default. Defaults to True.
"""
tile_url = mosaic_tile(url, titiler_endpoint, **kwargs)
bounds = mosaic_bounds(url, titiler_endpoint)
self.add_tile_layer(tile_url, name, attribution, opacity, shown)
self.fit_bounds([[bounds[1], bounds[0]], [bounds[3], bounds[2]]])
def add_minimap(self, zoom=5, position="bottomright"):
"""Adds a minimap (overview) to the ipyleaflet map.
Args:
zoom (int, optional): Initial map zoom level. Defaults to 5.
position (str, optional): Position of the minimap. Defaults to "bottomright".
"""
layers = [get_basemap("Esri.WorldImagery")]
minimap = ipyleaflet.Map(
zoom_control=False,
attribution_control=False,
zoom=zoom,
center=self.center,
layers=layers,
)
minimap.layout.width = "150px"
minimap.layout.height = "150px"
ipyleaflet.link((minimap, "center"), (self, "center"))
minimap_control = ipyleaflet.WidgetControl(widget=minimap, position=position)
self.add(minimap_control)
def marker_cluster(self, event="click", add_marker=True):
"""Captures user inputs and add markers to the map.
Args:
event (str, optional): [description]. Defaults to 'click'.
add_marker (bool, optional): If True, add markers to the map. Defaults to True.
Returns:
object: a marker cluster.
"""
coordinates = []
markers = []
marker_cluster = ipyleaflet.MarkerCluster(name="Marker Cluster")
self.last_click = []
self.all_clicks = []
if add_marker:
self.add(marker_cluster)
def handle_interaction(**kwargs):
latlon = kwargs.get("coordinates")
if event == "click" and kwargs.get("type") == "click":
coordinates.append(latlon)
self.last_click = latlon
self.all_clicks = coordinates
if add_marker:
markers.append(ipyleaflet.Marker(location=latlon))
marker_cluster.markers = markers
elif kwargs.get("type") == "mousemove":
pass
# cursor style: https://www.w3schools.com/cssref/pr_class_cursor.asp
self.default_style = {"cursor": "crosshair"}
self.on_interaction(handle_interaction)
def add_circle_markers_from_xy(
self,
data,
x="lon",
y="lat",
radius=10,
popup=None,
font_size=2,
stroke=True,
color="#0033FF",
weight=2,
fill=True,
fill_color=None,
fill_opacity=0.2,
opacity=1.0,
layer_name="Circle Markers",
**kwargs,
):
"""Adds a marker cluster to the map. For a list of options, see https://ipyleaflet.readthedocs.io/en/latest/_modules/ipyleaflet/leaflet.html#Path
Args:
data (str | pd.DataFrame): A csv or Pandas DataFrame containing x, y, z values.
x (str, optional): The column name for the x values. Defaults to "lon".
y (str, optional): The column name for the y values. Defaults to "lat".
radius (int, optional): The radius of the circle. Defaults to 10.
popup (list, optional): A list of column names to be used as the popup. Defaults to None.
font_size (int, optional): The font size of the popup. Defaults to 2.
stroke (bool, optional): Whether to stroke the path. Defaults to True.
color (str, optional): The color of the path. Defaults to "#0033FF".
weight (int, optional): The weight of the path. Defaults to 2.
fill (bool, optional): Whether to fill the path with color. Defaults to True.
fill_color (str, optional): The fill color of the path. Defaults to None.
fill_opacity (float, optional): The fill opacity of the path. Defaults to 0.2.
opacity (float, optional): The opacity of the path. Defaults to 1.0.
layer_name (str, optional): The layer name to use for the marker cluster. Defaults to "Circle Markers".
"""
import pandas as pd
import geopandas as gpd
if isinstance(data, pd.DataFrame) or isinstance(data, gpd.GeoDataFrame):
df = data
elif not data.startswith("http") and (not os.path.exists(data)):
raise FileNotFoundError("The specified input csv does not exist.")
elif isinstance(data, str) and data.endswith(".csv"):
df = pd.read_csv(data)
else:
df = gpd.read_file(data)
col_names = df.columns.values.tolist()
if "geometry" in col_names:
col_names.remove("geometry")
if popup is None:
popup = col_names
if not isinstance(popup, list):
popup = [popup]
if x not in col_names:
if isinstance(df, gpd.GeoDataFrame):
df[x] = df.geometry.x
else:
raise ValueError(
f"x must be one of the following: {', '.join(col_names)}"
)
if y not in col_names:
if isinstance(df, gpd.GeoDataFrame):
df[y] = df.geometry.y
else:
raise ValueError(
f"y must be one of the following: {', '.join(col_names)}"
)
if fill_color is None:
fill_color = color
if isinstance(color, str):
colors = [color] * len(df)
elif isinstance(color, list):
colors = color
else:
raise ValueError("color must be either a string or a list.")
if isinstance(fill_color, str):
fill_colors = [fill_color] * len(df)
elif isinstance(fill_color, list):
fill_colors = fill_color
else:
raise ValueError("fill_color must be either a string or a list.")
if isinstance(radius, int):
radius = [radius] * len(df)
elif isinstance(radius, list):
radius = radius
else:
raise ValueError("radius must be either an integer or a list.")
index = 0
layers = []
for idx, row in df.iterrows():
html = ""
for p in popup:
html = (
html
+ f"<font size='{font_size}'><b>"
+ p
+ "</b>"
+ ": "
+ str(row[p])
+ "<br></font>"
)
popup_html = widgets.HTML(html)
marker = ipyleaflet.CircleMarker(
location=[row[y], row[x]],
radius=radius[index],
popup=popup_html,
stroke=stroke,
color=colors[index],
weight=weight,
fill=fill,
fill_color=fill_colors[index],
fill_opacity=fill_opacity,
opacity=opacity,
**kwargs,
)
layers.append(marker)
index += 1
group = ipyleaflet.LayerGroup(layers=tuple(layers), name=layer_name)
self.add(group)
def add_markers(
self,
markers: Union[List[List[Union[int, float]]], List[Union[int, float]]],
x: str = "lon",
y: str = "lat",
radius: int = 10,
popup: Optional[str] = None,
font_size: int = 2,
stroke: bool = True,
color: str = "#0033FF",
weight: int = 2,
fill: bool = True,
fill_color: Optional[str] = None,
fill_opacity: float = 0.2,
opacity: float = 1.0,
shape: str = "circle",
layer_name: str = "Markers",
**kwargs,
) -> None:
"""
Adds markers to the map.
Args:
markers (Union[List[List[Union[int, float]]], List[Union[int, float]]]): List of markers.
Each marker can be defined as a list of [x, y] coordinates or as a single [x, y] coordinate.
x (str, optional): Name of the x-coordinate column in the marker data. Defaults to "lon".
y (str, optional): Name of the y-coordinate column in the marker data. Defaults to "lat".
radius (int, optional): Radius of the markers. Defaults to 10.
popup (str, optional): Popup text for the markers. Defaults to None.
font_size (int, optional): Font size of the popup text. Defaults to 2.
stroke (bool, optional): Whether to display marker stroke. Defaults to True.
color (str, optional): Color of the marker stroke. Defaults to "#0033FF".
weight (int, optional): Weight of the marker stroke. Defaults to 2.
fill (bool, optional): Whether to fill markers. Defaults to True.
fill_color (str, optional): Fill color of the markers. Defaults to None.
fill_opacity (float, optional): Opacity of the marker fill. Defaults to 0.2.
opacity (float, optional): Opacity of the markers. Defaults to 1.0.
shape (str, optional): Shape of the markers. Options are "circle" or "marker". Defaults to "circle".
layer_name (str, optional): Name of the marker layer. Defaults to "Markers".
**kwargs: Additional keyword arguments to pass to the marker plotting function.
Returns:
None: This function does not return any value.
"""
import geopandas as gpd
if (
isinstance(markers, list)
and len(markers) == 2
and isinstance(markers[0], (int, float))
and isinstance(markers[1], (int, float))
):
markers = [markers]
if isinstance(markers, list) and all(
isinstance(item, list) and len(item) == 2 for item in markers
):
df = pd.DataFrame(markers, columns=[y, x])
markers = gpd.GeoDataFrame(df, geometry=gpd.points_from_xy(df[x], df[y]))
if shape == "circle":
self.add_circle_markers_from_xy(
markers,
x,
y,
radius,
popup,
font_size,
stroke,
color,
weight,
fill,
fill_color,
fill_opacity,
opacity,
layer_name,
**kwargs,
)
elif shape == "marker":
self.add_gdf(markers, **kwargs)
def split_map(
self,
left_layer="TERRAIN",
right_layer="OpenTopoMap",
left_args={},
right_args={},
zoom_control=True,
fullscreen_control=True,
layer_control=True,
add_close_button=False,
left_label=None,
right_label=None,
left_position="bottomleft",
right_position="bottomright",
widget_layout=None,
):
"""Adds split map.
Args:
left_layer (str, optional): The left tile layer. Can be a local file path, HTTP URL, or a basemap name. Defaults to 'TERRAIN'.
right_layer (str, optional): The right tile layer. Can be a local file path, HTTP URL, or a basemap name. Defaults to 'OpenTopoMap'.
left_args (dict, optional): The arguments for the left tile layer. Defaults to {}.
right_args (dict, optional): The arguments for the right tile layer. Defaults to {}.
zoom_control (bool, optional): Whether to add zoom control. Defaults to True.
fullscreen_control (bool, optional): Whether to add fullscreen control. Defaults to True.
layer_control (bool, optional): Whether to add layer control. Defaults to True.
add_close_button (bool, optional): Whether to add a close button. Defaults to False.
left_label (str, optional): The label for the left layer. Defaults to None.
right_label (str, optional): The label for the right layer. Defaults to None.
left_position (str, optional): The position for the left label. Defaults to "bottomleft".
right_position (str, optional): The position for the right label. Defaults to "bottomright".
widget_layout (dict, optional): The layout for the widget. Defaults to None.
"""
if "max_zoom" not in left_args:
left_args["max_zoom"] = 100
if "max_native_zoom" not in left_args:
left_args["max_native_zoom"] = 100
if "max_zoom" not in right_args:
right_args["max_zoom"] = 100
if "max_native_zoom" not in right_args:
right_args["max_native_zoom"] = 100
if "layer_name" not in left_args:
left_args["layer_name"] = "Left Layer"
if "layer_name" not in right_args:
right_args["layer_name"] = "Right Layer"
bounds = None
try:
controls = self.controls
layers = self.layers
self.clear_controls()
if zoom_control:
self.add(ipyleaflet.ZoomControl())
if fullscreen_control:
self.add(ipyleaflet.FullScreenControl())
if left_label is not None:
left_name = left_label
else:
left_name = "Left Layer"
if right_label is not None:
right_name = right_label
else:
right_name = "Right Layer"
if left_layer in basemaps.keys():
left_layer = get_basemap(left_layer)
elif isinstance(left_layer, str):
if left_layer.startswith("http") and left_layer.endswith(".tif"):
url = cog_tile(left_layer, **left_args)
bbox = cog_bounds(left_layer)
bounds = [(bbox[1], bbox[0]), (bbox[3], bbox[2])]
left_layer = ipyleaflet.TileLayer(
url=url,
name=left_name,
attribution=" ",
)
elif left_layer.startswith("http") and left_layer.endswith(".json"):
left_tile_url = stac_tile(left_layer, **left_args)
bbox = stac_bounds(left_layer)
bounds = [(bbox[1], bbox[0]), (bbox[3], bbox[2])]
left_layer = ipyleaflet.TileLayer(
url=left_tile_url,
name=left_name,
attribution=" ",
)
elif left_layer.startswith("http") and left_layer.endswith(".geojson"):
if "max_zoom" in left_args:
del left_args["max_zoom"]
if "max_native_zoom" in left_args:
del left_args["max_native_zoom"]
left_layer = geojson_layer(left_layer, **left_args)
elif os.path.exists(left_layer):
if left_layer.endswith(".geojson"):
if "max_zoom" in left_args:
del left_args["max_zoom"]
if "max_native_zoom" in left_args:
del left_args["max_native_zoom"]
left_layer = geojson_layer(left_layer, **left_args)
else:
left_layer, left_client = get_local_tile_layer(
left_layer,
tile_format="ipyleaflet",
return_client=True,
**left_args,
)
bounds = image_bounds(left_client)
else:
left_layer = ipyleaflet.TileLayer(
url=left_layer,
name=left_name,
attribution=" ",
**left_args,
)
elif isinstance(left_layer, ipyleaflet.TileLayer) or isinstance(
left_layer, ipyleaflet.GeoJSON
):
pass
else:
raise ValueError(
f"left_layer must be one of the following: {', '.join(basemaps.keys())} or a string url to a tif file."
)
if right_layer in basemaps.keys():
right_layer = get_basemap(right_layer)
elif isinstance(right_layer, str):
if right_layer.startswith("http") and right_layer.endswith(".tif"):
url = cog_tile(
right_layer,
**right_args,
)
bbox = cog_bounds(right_layer)
bounds = [(bbox[1], bbox[0]), (bbox[3], bbox[2])]
right_layer = ipyleaflet.TileLayer(
url=url,
name=right_name,
attribution=" ",
)
elif right_layer.startswith("http") and right_layer.endswith(".json"):
right_tile_url = stac_tile(right_layer, **left_args)
bbox = stac_bounds(right_layer)
bounds = [(bbox[1], bbox[0]), (bbox[3], bbox[2])]
right_layer = ipyleaflet.TileLayer(
url=right_tile_url,
name=right_name,
attribution=" ",
)
elif right_layer.startswith("http") and right_layer.endswith(
".geojson"
):
if "max_zoom" in right_args:
del right_args["max_zoom"]
if "max_native_zoom" in right_args:
del right_args["max_native_zoom"]
right_layer = geojson_layer(right_layer, **right_args)
elif os.path.exists(right_layer):
if "max_zoom" in right_args:
del right_args["max_zoom"]
if "max_native_zoom" in right_args:
del right_args["max_native_zoom"]
if right_layer.endswith(".geojson"):
right_layer = geojson_layer(right_layer, **right_args)
else:
right_layer, right_client = get_local_tile_layer(
right_layer,
tile_format="ipyleaflet",
return_client=True,
**right_args,
)
bounds = image_bounds(right_client)
else:
right_layer = ipyleaflet.TileLayer(
url=right_layer,
name=right_name,
attribution=" ",
**right_args,
)
elif isinstance(right_layer, ipyleaflet.TileLayer) or isinstance(
right_layer, ipyleaflet.GeoJSON
):
pass
else:
raise ValueError(
f"right_layer must be one of the following: {', '.join(basemaps.keys())} or a string url to a tif file."
)
control = ipyleaflet.SplitMapControl(
left_layer=left_layer, right_layer=right_layer
)
self.add(control)
if left_label is not None:
if widget_layout is None:
widget_layout = widgets.Layout(padding="0px 4px 0px 4px")
left_widget = widgets.HTML(value=left_label, layout=widget_layout)
left_control = ipyleaflet.WidgetControl(
widget=left_widget, position=left_position
)
self.add(left_control)
if right_label is not None:
if widget_layout is None:
widget_layout = widgets.Layout(padding="0px 4px 0px 4px")
right_widget = widgets.HTML(value=right_label, layout=widget_layout)
right_control = ipyleaflet.WidgetControl(
widget=right_widget, position=right_position
)
self.add(right_control)
if bounds is not None:
self.fit_bounds(bounds)
self.dragging = False # Disable dragging
close_button = widgets.ToggleButton(
value=False,
tooltip="Close split-panel map",
icon="times",
layout=widgets.Layout(
height="28px", width="28px", padding="0px 0px 0px 4px"
),
)
def close_btn_click(change):
if change["new"]:
self.controls = controls
self.layers = layers[:-1]
self.add(layers[-1])
if left_label in self.controls:
self.remove_control(left_control)
if right_label in self.controls:
self.remove_control(right_control)
self.dragging = True
close_button.observe(close_btn_click, "value")
close_control = ipyleaflet.WidgetControl(
widget=close_button, position="topright"
)
if add_close_button:
self.add(close_control)
if layer_control:
self.add_layer_control()
except Exception as e:
print("The provided layers are invalid!")
raise ValueError(e)
def basemap_demo(self):
"""A demo for using leafmap basemaps."""
dropdown = widgets.Dropdown(
options=list(basemaps.keys()),
value="Esri.WorldImagery",
description="Basemaps",
)
def on_click(change):
basemap_name = change["new"]
old_basemap = self.layers[-1]
self.substitute_layer(old_basemap, get_basemap(basemap_name))
dropdown.observe(on_click, "value")
basemap_control = ipyleaflet.WidgetControl(widget=dropdown, position="topright")
self.add(basemap_control)
def add_legend(
self,
title="Legend",
legend_dict=None,
labels=None,
colors=None,
position="bottomright",
builtin_legend=None,
layer_name=None,
**kwargs,
):
"""Adds a customized basemap to the map.
Args:
title (str, optional): Title of the legend. Defaults to 'Legend'.
legend_dict (dict, optional): A dictionary containing legend items as keys and color as values. If provided, legend_keys and legend_colors will be ignored. Defaults to None.
labels (list, optional): A list of legend keys. Defaults to None.
colors (list, optional): A list of legend colors. Defaults to None.
position (str, optional): Position of the legend. Defaults to 'bottomright'.
builtin_legend (str, optional): Name of the builtin legend to add to the map. Defaults to None.
layer_name (str, optional): Layer name of the legend to be associated with. Defaults to None.
"""
import pkg_resources
from IPython.display import display
pkg_dir = os.path.dirname(
pkg_resources.resource_filename("leafmap", "leafmap.py")
)
legend_template = os.path.join(pkg_dir, "data/template/legend.html")
if "min_width" not in kwargs.keys():
min_width = None
if "max_width" not in kwargs.keys():
max_width = None
else:
max_width = kwargs["max_width"]
if "min_height" not in kwargs.keys():
min_height = None
else:
min_height = kwargs["min_height"]
if "max_height" not in kwargs.keys():
max_height = None
else:
max_height = kwargs["max_height"]
if "height" not in kwargs.keys():
height = None
else:
height = kwargs["height"]
if "width" not in kwargs.keys():
width = None
else:
width = kwargs["width"]
if width is None:
max_width = "300px"
if height is None:
max_height = "400px"
if not os.path.exists(legend_template):
print("The legend template does not exist.")
return
if labels is not None:
if not isinstance(labels, list):
print("The legend keys must be a list.")
return
else:
labels = ["One", "Two", "Three", "Four", "etc"]
if colors is not None:
if not isinstance(colors, list):
print("The legend colors must be a list.")
return
elif all(isinstance(item, tuple) for item in colors):
try:
colors = [rgb_to_hex(x) for x in colors]
except Exception as e:
print(e)
elif all((item.startswith("#") and len(item) == 7) for item in colors):
pass
elif all((len(item) == 6) for item in colors):
pass
else:
print("The legend colors must be a list of tuples.")
return
else:
colors = [
"#8DD3C7",
"#FFFFB3",
"#BEBADA",
"#FB8072",
"#80B1D3",
]
if len(labels) != len(colors):
print("The legend keys and values must be the same length.")
return
allowed_builtin_legends = builtin_legends.keys()
if builtin_legend is not None:
if builtin_legend not in allowed_builtin_legends:
print(
"The builtin legend must be one of the following: {}".format(
", ".join(allowed_builtin_legends)
)
)
return
else:
legend_dict = builtin_legends[builtin_legend]
labels = list(legend_dict.keys())
colors = list(legend_dict.values())
if legend_dict is not None:
if not isinstance(legend_dict, dict):
print("The legend dict must be a dictionary.")
return
else:
labels = list(legend_dict.keys())
colors = list(legend_dict.values())
if all(isinstance(item, tuple) for item in colors):
try:
colors = [rgb_to_hex(x) for x in colors]
except Exception as e:
print(e)
allowed_positions = [
"topleft",
"topright",
"bottomleft",
"bottomright",
]
if position not in allowed_positions:
print(
"The position must be one of the following: {}".format(
", ".join(allowed_positions)
)
)
return
header = []
content = []
footer = []
with open(legend_template) as f:
lines = f.readlines()
lines[3] = lines[3].replace("Legend", title)
header = lines[:6]
footer = lines[11:]
for index, key in enumerate(labels):
color = colors[index]
if not color.startswith("#"):
color = "#" + color
item = " <li><span style='background:{};'></span>{}</li>\n".format(
color, key
)
content.append(item)
legend_html = header + content + footer
legend_text = "".join(legend_html)
try:
legend_output_widget = widgets.Output(
layout={
# "border": "1px solid black",
"max_width": max_width,
"min_width": min_width,
"max_height": max_height,
"min_height": min_height,
"height": height,
"width": width,
"overflow": "scroll",
}
)
legend_control = ipyleaflet.WidgetControl(
widget=legend_output_widget, position=position
)
legend_widget = widgets.HTML(value=legend_text)
with legend_output_widget:
display(legend_widget)
self.legend_widget = legend_output_widget
self.legend_control = legend_control
self.add(legend_control)
except Exception as e:
raise Exception(e)
def add_colorbar(
self,
colors,
vmin=0,
vmax=1.0,
index=None,
caption="",
categorical=False,
step=None,
height="45px",
transparent_bg=False,
position="bottomright",
**kwargs,
):
"""Add a branca colorbar to the map.
Args:
colors (list): The set of colors to be used for interpolation. Colors can be provided in the form: * tuples of RGBA ints between 0 and 255 (e.g: (255, 255, 0) or (255, 255, 0, 255)) * tuples of RGBA floats between 0. and 1. (e.g: (1.,1.,0.) or (1., 1., 0., 1.)) * HTML-like string (e.g: “#ffff00) * a color name or shortcut (e.g: “y” or “yellow”)
vmin (int, optional): The minimal value for the colormap. Values lower than vmin will be bound directly to colors[0].. Defaults to 0.
vmax (float, optional): The maximal value for the colormap. Values higher than vmax will be bound directly to colors[-1]. Defaults to 1.0.
index (list, optional):The values corresponding to each color. It has to be sorted, and have the same length as colors. If None, a regular grid between vmin and vmax is created.. Defaults to None.
caption (str, optional): The caption for the colormap. Defaults to "".
categorical (bool, optional): Whether or not to create a categorical colormap. Defaults to False.
step (int, optional): The step to split the LinearColormap into a StepColormap. Defaults to None.
height (str, optional): The height of the colormap widget. Defaults to "45px".
transparent_bg (bool, optional): Whether to use transparent background for the colormap widget. Defaults to True.
position (str, optional): The position for the colormap widget. Defaults to "bottomright".
"""
from box import Box
from branca.colormap import LinearColormap
output = widgets.Output()
output.layout.height = height
if "width" in kwargs.keys():
output.layout.width = kwargs["width"]
if isinstance(colors, Box):
try:
colors = list(colors["default"])
except Exception as e:
print("The provided color list is invalid.")
raise Exception(e)
if all(len(color) == 6 for color in colors):
colors = ["#" + color for color in colors]
colormap = LinearColormap(
colors=colors, index=index, vmin=vmin, vmax=vmax, caption=caption
)
if categorical:
if step is not None:
colormap = colormap.to_step(step)
elif index is not None:
colormap = colormap.to_step(len(index) - 1)
else:
colormap = colormap.to_step(3)
colormap_ctrl = ipyleaflet.WidgetControl(
widget=output,
position=position,
transparent_bg=transparent_bg,
**kwargs,
)
with output:
output.outputs = ()
display(colormap)
self.colorbar = colormap_ctrl
self.add(colormap_ctrl)
def add_colormap(
self,
cmap="gray",
colors=None,
discrete=False,
label=None,
width=3,
height=0.25,
orientation="horizontal",
vmin=0,
vmax=1.0,
axis_off=False,
show_name=False,
font_size=8,
transparent_bg=False,
position="bottomright",
**kwargs,
):
"""Adds a matplotlib colormap to the map.
Args:
cmap (str, optional): Matplotlib colormap. Defaults to "gray". See https://matplotlib.org/3.3.4/tutorials/colors/colormaps.html#sphx-glr-tutorials-colors-colormaps-py for options.
colors (list, optional): A list of custom colors to create a colormap. Defaults to None.
discrete (bool, optional): Whether to create a discrete colorbar. Defaults to False.
label (str, optional): Label for the colorbar. Defaults to None.
width (float, optional): The width of the colormap. Defaults to 8.0.
height (float, optional): The height of the colormap. Defaults to 0.4.
orientation (str, optional): The orientation of the colormap. Defaults to "horizontal".
vmin (float, optional): The minimum value range. Defaults to 0.
vmax (float, optional): The maximum value range. Defaults to 1.0.
axis_off (bool, optional): Whether to turn axis off. Defaults to False.
show_name (bool, optional): Whether to show the colormap name. Defaults to False.
font_size (int, optional): Font size of the text. Defaults to 12.
transparent_bg (bool, optional): Whether to use transparent background for the colormap widget. Defaults to True.
position (str, optional): The position for the colormap widget. Defaults to "bottomright".
"""
from .colormaps import plot_colormap
output = widgets.Output()
colormap_ctrl = ipyleaflet.WidgetControl(
widget=output,
position=position,
transparent_bg=transparent_bg,
)
with output:
output.outputs = ()
plot_colormap(
cmap,
colors,
discrete,
label,
width,
height,
orientation,
vmin,
vmax,
axis_off,
show_name,
font_size,
**kwargs,
)
self.colorbar = colormap_ctrl
self.add(colormap_ctrl)
def image_overlay(self, url, bounds, name):
"""Overlays an image from the Internet or locally on the map.
Args:
url (str): http URL or local file path to the image.
bounds (tuple): bounding box of the image in the format of (lower_left(lat, lon), upper_right(lat, lon)), such as ((13, -130), (32, -100)).
name (str): name of the layer to show on the layer control.
"""
from base64 import b64encode
from PIL import Image, ImageSequence
from io import BytesIO
try:
if not url.startswith("http"):
if not os.path.exists(url):
print("The provided file does not exist.")
return
ext = os.path.splitext(url)[1][1:] # file extension
image = Image.open(url)
f = BytesIO()
if ext.lower() == "gif":
frames = []
# Loop over each frame in the animated image
for frame in ImageSequence.Iterator(image):
frame = frame.convert("RGBA")
b = BytesIO()
frame.save(b, format="gif")
frame = Image.open(b)
frames.append(frame)
frames[0].save(
f,
format="GIF",
save_all=True,
append_images=frames[1:],
loop=0,
)
else:
image.save(f, ext)
data = b64encode(f.getvalue())
data = data.decode("ascii")
url = "data:image/{};base64,".format(ext) + data
img = ipyleaflet.ImageOverlay(url=url, bounds=bounds, name=name)
self.add(img)
except Exception as e:
raise Exception(e)
def video_overlay(self, url, bounds, layer_name=None, **kwargs):
"""Overlays a video from the Internet on the map.
Args:
url (str): http URL of the video, such as "https://www.mapbox.com/bites/00188/patricia_nasa.webm"
bounds (tuple): bounding box of the video in the format of (lower_left(lat, lon), upper_right(lat, lon)), such as ((13, -130), (32, -100)).
layer_name (str): name of the layer to show on the layer control.
"""
if layer_name is None and "name" in kwargs:
layer_name = kwargs.pop("name")
try:
video = ipyleaflet.VideoOverlay(url=url, bounds=bounds, name=layer_name)
self.add(video)
except Exception as e:
raise Exception(e)
def to_html(
self,
outfile=None,
title="My Map",
width="100%",
height="880px",
add_layer_control=True,
**kwargs,
):
"""Saves the map as an HTML file.
Args:
outfile (str, optional): The output file path to the HTML file.
title (str, optional): The title of the HTML file. Defaults to 'My Map'.
width (str, optional): The width of the map in pixels or percentage. Defaults to '100%'.
height (str, optional): The height of the map in pixels. Defaults to '880px'.
add_layer_control (bool, optional): Whether to add the LayersControl. Defaults to True.
"""
try:
save = True
if outfile is not None:
if not outfile.endswith(".html"):
raise ValueError("The output file extension must be html.")
outfile = os.path.abspath(outfile)
out_dir = os.path.dirname(outfile)
if not os.path.exists(out_dir):
os.makedirs(out_dir)
else:
outfile = os.path.abspath(random_string() + ".html")
save = False
if add_layer_control and self.layer_control is None:
layer_control = ipyleaflet.LayersControl(position="topright")
self.layer_control = layer_control
self.add(layer_control)
before_width = self.layout.width
before_height = self.layout.height
if not isinstance(width, str):
print("width must be a string.")
return
elif width.endswith("px") or width.endswith("%"):
pass
else:
print("width must end with px or %")
return
if not isinstance(height, str):
print("height must be a string.")
return
elif not height.endswith("px"):
print("height must end with px")
return
self.layout.width = width
self.layout.height = height
self.save(outfile, title=title, **kwargs)
self.layout.width = before_width
self.layout.height = before_height
if not save:
out_html = ""
with open(outfile) as f:
lines = f.readlines()
out_html = "".join(lines)
os.remove(outfile)
return out_html
except Exception as e:
raise Exception(e)
def to_image(self, outfile=None, monitor=1):
"""Saves the map as a PNG or JPG image.
Args:
outfile (str, optional): The output file path to the image. Defaults to None.
monitor (int, optional): The monitor to take the screenshot. Defaults to 1.
"""
if outfile is None:
outfile = os.path.join(os.getcwd(), "my_map.png")
if outfile.endswith(".png") or outfile.endswith(".jpg"):
pass
else:
print("The output file must be a PNG or JPG image.")
return
work_dir = os.path.dirname(outfile)
if not os.path.exists(work_dir):
os.makedirs(work_dir)
screenshot = screen_capture(outfile, monitor)
self.screenshot = screenshot
def to_streamlit(self, width=None, height=600, scrolling=False, **kwargs):
"""Renders map figure in a Streamlit app.
Args:
width (int, optional): Width of the map. Defaults to None.
height (int, optional): Height of the map. Defaults to 600.
responsive (bool, optional): Whether to make the map responsive. Defaults to True.
scrolling (bool, optional): If True, show a scrollbar when the content is larger than the iframe. Otherwise, do not show a scrollbar. Defaults to False.
Returns:
streamlit.components: components.html object.
"""
try:
import streamlit.components.v1 as components
# if responsive:
# make_map_responsive = """
# <style>
# [title~="st.iframe"] { width: 100%}
# </style>
# """
# st.markdown(make_map_responsive, unsafe_allow_html=True)
return components.html(
self.to_html(), width=width, height=height, scrolling=scrolling
)
except Exception as e:
raise Exception(e)
def toolbar_reset(self):
"""Reset the toolbar so that no tool is selected."""
toolbar_grid = self.toolbar
for tool in toolbar_grid.children:
tool.value = False
def add_raster(
self,
source,
band=None,
palette=None,
vmin=None,
vmax=None,
nodata=None,
attribution=None,
layer_name="Local COG",
zoom_to_layer=True,
visible=True,
**kwargs,
):
"""Add a local raster dataset to the map.
If you are using this function in JupyterHub on a remote server (e.g., Binder, Microsoft Planetary Computer) and
if the raster does not render properly, try installing jupyter-server-proxy using `pip install jupyter-server-proxy`,
then running the following code before calling this function. For more info, see https://bit.ly/3JbmF93.
import os
os.environ['LOCALTILESERVER_CLIENT_PREFIX'] = 'proxy/{port}'
Args:
source (str): The path to the GeoTIFF file or the URL of the Cloud Optimized GeoTIFF.
band (int, optional): The band to use. Band indexing starts at 1. Defaults to None.
palette (str, optional): The name of the color palette from `palettable` to use when plotting a single band. See https://jiffyclub.github.io/palettable. Default is greyscale
vmin (float, optional): The minimum value to use when colormapping the palette when plotting a single band. Defaults to None.
vmax (float, optional): The maximum value to use when colormapping the palette when plotting a single band. Defaults to None.
nodata (float, optional): The value from the band to use to interpret as not valid data. Defaults to None.
attribution (str, optional): Attribution for the source raster. This defaults to a message about it being a local file.. Defaults to None.
layer_name (str, optional): The layer name to use. Defaults to 'Local COG'.
zoom_to_layer (bool, optional): Whether to zoom to the extent of the layer. Defaults to True.
visible (bool, optional): Whether the layer is visible. Defaults to True.
"""
tile_layer, tile_client = get_local_tile_layer(
source,
band=band,
palette=palette,
vmin=vmin,
vmax=vmax,
nodata=nodata,
attribution=attribution,
layer_name=layer_name,
return_client=True,
**kwargs,
)
tile_layer.visible = visible
self.add(tile_layer)
bounds = tile_client.bounds() # [ymin, ymax, xmin, xmax]
bounds = (
bounds[2],
bounds[0],
bounds[3],
bounds[1],
) # [minx, miny, maxx, maxy]
if zoom_to_layer:
self.zoom_to_bounds(bounds)
arc_add_layer(tile_layer.url, layer_name, True, 1.0)
if zoom_to_layer:
arc_zoom_to_extent(bounds[0], bounds[1], bounds[2], bounds[3])
if not hasattr(self, "cog_layer_dict"):
self.cog_layer_dict = {}
band_names = list(tile_client.metadata()["bands"].keys())
params = {
"tile_layer": tile_layer,
"tile_client": tile_client,
"band": band,
"band_names": band_names,
"bounds": bounds,
"type": "LOCAL",
}
self.cog_layer_dict[layer_name] = params
add_local_tile = add_raster
def add_remote_tile(
self,
source,
band=None,
palette=None,
vmin=None,
vmax=None,
nodata=None,
attribution=None,
layer_name=None,
**kwargs,
):
"""Add a remote Cloud Optimized GeoTIFF (COG) to the map.
Args:
source (str): The path to the remote Cloud Optimized GeoTIFF.
band (int, optional): The band to use. Band indexing starts at 1. Defaults to None.
palette (str, optional): The name of the color palette from `palettable` to use when plotting a single band. See https://jiffyclub.github.io/palettable. Default is greyscale
vmin (float, optional): The minimum value to use when colormapping the palette when plotting a single band. Defaults to None.
vmax (float, optional): The maximum value to use when colormapping the palette when plotting a single band. Defaults to None.
nodata (float, optional): The value from the band to use to interpret as not valid data. Defaults to None.
attribution (str, optional): Attribution for the source raster. This defaults to a message about it being a local file.. Defaults to None.
layer_name (str, optional): The layer name to use. Defaults to None.
"""
if isinstance(source, str) and source.startswith("http"):
self.add_raster(
source,
band=band,
palette=palette,
vmin=vmin,
vmax=vmax,
nodata=nodata,
attribution=attribution,
layer_name=layer_name,
**kwargs,
)
else:
raise Exception("The source must be a URL.")
def add_netcdf(
self,
filename,
variables=None,
palette=None,
vmin=None,
vmax=None,
nodata=None,
attribution=None,
layer_name="NetCDF layer",
shift_lon=True,
lat="lat",
lon="lon",
lev="lev",
level_index=0,
time=0,
**kwargs,
):
"""Generate an ipyleaflet/folium TileLayer from a netCDF file.
If you are using this function in JupyterHub on a remote server (e.g., Binder, Microsoft Planetary Computer),
try adding to following two lines to the beginning of the notebook if the raster does not render properly.
import os
os.environ['LOCALTILESERVER_CLIENT_PREFIX'] = f'{os.environ['JUPYTERHUB_SERVICE_PREFIX'].lstrip('/')}/proxy/{{port}}'
Args:
filename (str): File path or HTTP URL to the netCDF file.
variables (int, optional): The variable/band names to extract data from the netCDF file. Defaults to None. If None, all variables will be extracted.
port (str, optional): The port to use for the server. Defaults to "default".
palette (str, optional): The name of the color palette from `palettable` to use when plotting a single band. See https://jiffyclub.github.io/palettable. Default is greyscale
vmin (float, optional): The minimum value to use when colormapping the palette when plotting a single band. Defaults to None.
vmax (float, optional): The maximum value to use when colormapping the palette when plotting a single band. Defaults to None.
nodata (float, optional): The value from the band to use to interpret as not valid data. Defaults to None.
attribution (str, optional): Attribution for the source raster. This defaults to a message about it being a local file.. Defaults to None.
layer_name (str, optional): The layer name to use. Defaults to "netCDF layer".
shift_lon (bool, optional): Flag to shift longitude values from [0, 360] to the range [-180, 180]. Defaults to True.
lat (str, optional): Name of the latitude variable. Defaults to 'lat'.
lon (str, optional): Name of the longitude variable. Defaults to 'lon'.
lev (str, optional): Name of the level variable. Defaults to 'lev'.
level_index (int, optional): Index of level to use. Defaults to 0'.
time (int, optional): Index of time to use. Defaults to 0'.
"""
tif, vars = netcdf_to_tif(
filename,
shift_lon=shift_lon,
lat=lat,
lon=lon,
lev=lev,
level_index=level_index,
time=time,
return_vars=True,
)
if variables is None:
if len(vars) >= 3:
band_idx = [1, 2, 3]
else:
band_idx = [1]
else:
if not set(variables).issubset(set(vars)):
raise ValueError(f"The variables must be a subset of {vars}.")
else:
band_idx = [vars.index(v) + 1 for v in variables]
self.add_raster(
tif,
band=band_idx,
palette=palette,
vmin=vmin,
vmax=vmax,
nodata=nodata,
attribution=attribution,
layer_name=layer_name,
**kwargs,
)
def add_raster_legacy(
self,
image,
bands=None,
layer_name=None,
colormap=None,
x_dim="x",
y_dim="y",
fit_bounds=True,
):
"""Adds a local raster dataset to the map.
Args:
image (str): The image file path.
bands (int or list, optional): The image bands to use. It can be either a number (e.g., 1) or a list (e.g., [3, 2, 1]). Defaults to None.
layer_name (str, optional): The layer name to use for the raster. Defaults to None.
colormap (str, optional): The name of the colormap to use for the raster, such as 'gray' and 'terrain'. More can be found at https://matplotlib.org/3.1.0/tutorials/colors/colormaps.html. Defaults to None.
x_dim (str, optional): The x dimension. Defaults to 'x'.
y_dim (str, optional): The y dimension. Defaults to 'y'.
fit_bounds (bool, optional): Whether to fit map bounds to raster bounds. Defaults to True.
"""
try:
import xarray_leaflet
except Exception:
# import platform
# if platform.system() != "Windows":
# # install_from_github(
# # url='https://github.com/davidbrochart/xarray_leaflet')
# check_install('xarray_leaflet')
# import xarray_leaflet
# else:
raise ImportError(
"You need to install xarray_leaflet first. See https://github.com/davidbrochart/xarray_leaflet"
)
import warnings
import numpy as np
import rioxarray
# import xarray as xr
import matplotlib.pyplot as plt
import matplotlib as mpl
warnings.simplefilter("ignore")
if isinstance(image, str):
if not os.path.exists(image):
print("The image file does not exist.")
return
if colormap is None:
colormap = plt.cm.inferno
if layer_name is None:
layer_name = "Layer_" + random_string()
if isinstance(colormap, str):
colormap = mpl.colormaps[colormap]
if isinstance(image, str):
da = rioxarray.open_rasterio(image, masked=True)
else:
da = image
# print(da.rio.nodata)
multi_band = False
if len(da.band) > 1:
multi_band = True
if bands is None:
bands = [3, 2, 1]
else:
bands = 1
if multi_band:
da = da.rio.write_nodata(0)
else:
da = da.rio.write_nodata(np.nan)
da = da.sel(band=bands)
# crs = da.rio.crs
# nan = da.attrs['nodatavals'][0]
# da = da / da.max()
# # if multi_band:
# da = xr.where(da == nan, np.nan, da)
# da = da.rio.write_nodata(0)
# da = da.rio.write_crs(crs)
if multi_band and type(bands) == list:
layer = da.leaflet.plot(
self, x_dim=x_dim, y_dim=y_dim, rgb_dim="band", fit_bounds=fit_bounds
)
else:
layer = da.leaflet.plot(
self, x_dim=x_dim, y_dim=y_dim, colormap=colormap, fit_bounds=fit_bounds
)
layer.name = layer_name
def add_shp(
self,
in_shp,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
zoom_to_layer=False,
encoding="utf-8",
):
"""Adds a shapefile to the map.
Args:
in_shp (str): The input file path or HTTP URL (*.zip) to the shapefile.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
zoom_to_layer (bool, optional): Whether to zoom to the layer after adding it to the map. Defaults to False.
encoding (str, optional): The encoding of the shapefile. Defaults to "utf-8".
Raises:
FileNotFoundError: The provided shapefile could not be found.
"""
import glob
if in_shp.startswith("http") and in_shp.endswith(".zip"):
out_dir = os.path.dirname(temp_file_path(".shp"))
if not os.path.exists(out_dir):
os.makedirs(out_dir)
basename = os.path.basename(in_shp)
filename = os.path.join(out_dir, basename)
download_file(in_shp, filename)
files = list(glob.glob(os.path.join(out_dir, "*.shp")))
if len(files) > 0:
in_shp = files[0]
else:
raise FileNotFoundError(
"The downloaded zip file does not contain any shapefile in the root directory."
)
else:
in_shp = os.path.abspath(in_shp)
if not os.path.exists(in_shp):
raise FileNotFoundError("The provided shapefile could not be found.")
geojson = shp_to_geojson(in_shp, encoding=encoding)
self.add_geojson(
geojson,
layer_name,
style,
hover_style,
style_callback,
fill_colors,
info_mode,
zoom_to_layer,
encoding,
)
def add_geojson(
self,
in_geojson,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
zoom_to_layer=False,
encoding="utf-8",
**kwargs,
):
"""Adds a GeoJSON file to the map.
Args:
in_geojson (str | dict): The file path or http URL to the input GeoJSON or a dictionary containing the geojson.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
zoom_to_layer (bool, optional): Whether to zoom to the layer after adding it to the map. Defaults to False.
encoding (str, optional): The encoding of the GeoJSON file. Defaults to "utf-8".
Raises:
FileNotFoundError: The provided GeoJSON file could not be found.
"""
import json
import random
import requests
style_callback_only = False
if len(style) == 0 and style_callback is not None:
style_callback_only = True
try:
if isinstance(in_geojson, str):
if in_geojson.startswith("http"):
if is_jupyterlite():
import pyodide
output = os.path.basename(in_geojson)
output = os.path.abspath(output)
obj = pyodide.http.open_url(in_geojson)
with open(output, "w") as fd:
shutil.copyfileobj(obj, fd)
with open(output, "r") as fd:
data = json.load(fd)
else:
in_geojson = github_raw_url(in_geojson)
data = requests.get(in_geojson).json()
else:
in_geojson = os.path.abspath(in_geojson)
if not os.path.exists(in_geojson):
raise FileNotFoundError(
"The provided GeoJSON file could not be found."
)
with open(in_geojson, encoding=encoding) as f:
data = json.load(f)
elif isinstance(in_geojson, dict):
data = in_geojson
else:
raise TypeError("The input geojson must be a type of str or dict.")
except Exception as e:
raise Exception(e)
geom_type = get_geometry_type(data)
if not style:
style = {
# "stroke": True,
"color": "#3388ff",
"weight": 2,
"opacity": 1,
"fill": True,
"fillColor": "#3388ff",
"fillOpacity": 0.2,
# "dashArray": "9"
# "clickable": True,
}
if geom_type in ["LineString", "MultiLineString"]:
style["fill"] = False
elif "weight" not in style:
style["weight"] = 1
if not hover_style:
hover_style = {"weight": style["weight"] + 2, "fillOpacity": 0}
def random_color(feature):
return {
"color": "black",
"fillColor": random.choice(fill_colors),
}
toolbar_button = widgets.ToggleButton(
value=True,
tooltip="Toolbar",
icon="info",
layout=widgets.Layout(
width="28px", height="28px", padding="0px 0px 0px 4px"
),
)
close_button = widgets.ToggleButton(
value=False,
tooltip="Close the tool",
icon="times",
# button_style="primary",
layout=widgets.Layout(
height="28px", width="28px", padding="0px 0px 0px 4px"
),
)
html = widgets.HTML()
html.layout.margin = "0px 10px 0px 10px"
html.layout.max_height = "250px"
html.layout.max_width = "250px"
output_widget = widgets.VBox(
[widgets.HBox([toolbar_button, close_button]), html]
)
info_control = ipyleaflet.WidgetControl(
widget=output_widget, position="bottomright"
)
if info_mode in ["on_hover", "on_click"]:
self.add(info_control)
def toolbar_btn_click(change):
if change["new"]:
close_button.value = False
output_widget.children = [
widgets.VBox([widgets.HBox([toolbar_button, close_button]), html])
]
else:
output_widget.children = [widgets.HBox([toolbar_button, close_button])]
toolbar_button.observe(toolbar_btn_click, "value")
def close_btn_click(change):
if change["new"]:
toolbar_button.value = False
if info_control in self.controls:
self.remove_control(info_control)
output_widget.close()
close_button.observe(close_btn_click, "value")
if "fields" in kwargs:
fields = kwargs["fields"]
kwargs.pop("fields")
else:
fields = None
def update_html(feature, fields=fields, **kwargs):
if fields is None:
fields = list(feature["properties"].keys())
if "style" in fields:
fields.remove("style")
value = [
"<b>{}: </b>{}<br>".format(prop, feature["properties"][prop])
for prop in fields
]
value = """{}""".format("".join(value))
html.value = value
if style_callback is None:
style_callback = random_color
if style_callback_only:
geojson = ipyleaflet.GeoJSON(
data=data,
hover_style=hover_style,
style_callback=style_callback,
name=layer_name,
)
else:
geojson = ipyleaflet.GeoJSON(
data=data,
style=style,
hover_style=hover_style,
style_callback=style_callback,
name=layer_name,
)
if info_mode == "on_hover":
geojson.on_hover(update_html)
elif info_mode == "on_click":
geojson.on_click(update_html)
self.add(geojson)
self.geojson_layers.append(geojson)
if not hasattr(self, "json_layer_dict"):
self.json_layer_dict = {}
params = {
"data": geojson,
"style": style,
"hover_style": hover_style,
"style_callback": style_callback,
}
self.json_layer_dict[layer_name] = params
if zoom_to_layer:
try:
import numpy as np
import geopandas as gpd
gdf = gpd.GeoDataFrame.from_features(data)
if gdf.crs is None:
gdf.crs = "EPSG:4326"
bounds = gdf.to_crs(epsg="4326").bounds
west = np.min(bounds["minx"])
south = np.min(bounds["miny"])
east = np.max(bounds["maxx"])
north = np.max(bounds["maxy"])
self.fit_bounds([[south, east], [north, west]])
except Exception as e:
print(e)
def add_search_control(
self, url, marker=None, zoom=None, position="topleft", **kwargs
):
"""Adds a search control to the map.
Args:
url (str): The url to the search API. For example, "https://nominatim.openstreetmap.org/search?format=json&q={s}".
marker (ipyleaflet.Marker, optional): The marker to be used for the search result. Defaults to None.
zoom (int, optional): The zoom level to be used for the search result. Defaults to None.
position (str, optional): The position of the search control. Defaults to "topleft".
kwargs (dict, optional): Additional keyword arguments to be passed to the search control. See https://ipyleaflet.readthedocs.io/en/latest/api_reference/search_control.html
"""
if marker is None:
marker = ipyleaflet.Marker(
icon=ipyleaflet.AwesomeIcon(
name="check", marker_color="green", icon_color="darkred"
)
)
search_control = ipyleaflet.SearchControl(
position=position,
url=url,
zoom=zoom,
marker=marker,
)
self.add(search_control)
self.search_control = search_control
def add_gdf(
self,
gdf,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
zoom_to_layer=False,
encoding="utf-8",
**kwargs,
):
"""Adds a GeoDataFrame to the map.
Args:
gdf (GeoDataFrame): A GeoPandas GeoDataFrame.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
zoom_to_layer (bool, optional): Whether to zoom to the layer. Defaults to False.
encoding (str, optional): The encoding of the GeoDataFrame. Defaults to "utf-8".
"""
for col in gdf.columns:
try:
if gdf[col].dtype in ["datetime64[ns]", "datetime64[ns, UTC]"]:
gdf[col] = gdf[col].astype(str)
except:
pass
data = gdf_to_geojson(gdf, epsg="4326")
self.add_geojson(
data,
layer_name,
style,
hover_style,
style_callback,
fill_colors,
info_mode,
zoom_to_layer,
encoding,
**kwargs,
)
if zoom_to_layer:
import numpy as np
bounds = gdf.to_crs(epsg="4326").bounds
west = np.min(bounds["minx"])
south = np.min(bounds["miny"])
east = np.max(bounds["maxx"])
north = np.max(bounds["maxy"])
self.fit_bounds([[south, east], [north, west]])
def add_gdf_from_postgis(
self,
sql,
con,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
zoom_to_layer=True,
**kwargs,
):
"""Reads a PostGIS database and returns data as a GeoDataFrame to be added to the map.
Args:
sql (str): SQL query to execute in selecting entries from database, or name of the table to read from the database.
con (sqlalchemy.engine.Engine): Active connection to the database to query.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
zoom_to_layer (bool, optional): Whether to zoom to the layer.
"""
gdf = read_postgis(sql, con, **kwargs)
gdf = gdf.to_crs("epsg:4326")
self.add_gdf(
gdf,
layer_name,
style,
hover_style,
style_callback,
fill_colors,
info_mode,
zoom_to_layer,
)
def add_kml(
self,
in_kml,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
):
"""Adds a KML file to the map.
Args:
in_kml (str): The input file path or HTTP URL to the KML.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
Raises:
FileNotFoundError: The provided KML file could not be found.
"""
if in_kml.startswith("http") and in_kml.endswith(".kml"):
out_dir = os.path.abspath("./cache")
if not os.path.exists(out_dir):
os.makedirs(out_dir)
in_kml = download_file(in_kml)
if not os.path.exists(in_kml):
raise FileNotFoundError("The downloaded kml file could not be found.")
else:
in_kml = os.path.abspath(in_kml)
if not os.path.exists(in_kml):
raise FileNotFoundError("The provided KML could not be found.")
self.add_vector(
in_kml,
layer_name,
style=style,
hover_style=hover_style,
style_callback=style_callback,
fill_colors=fill_colors,
info_mode=info_mode,
)
def add_vector(
self,
filename,
layer_name="Untitled",
bbox=None,
mask=None,
rows=None,
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
zoom_to_layer=False,
encoding="utf-8",
**kwargs,
):
"""Adds any geopandas-supported vector dataset to the map.
Args:
filename (str): Either the absolute or relative path to the file or URL to be opened, or any object with a read() method (such as an open file or StringIO).
layer_name (str, optional): The layer name to use. Defaults to "Untitled".
bbox (tuple | GeoDataFrame or GeoSeries | shapely Geometry, optional): Filter features by given bounding box, GeoSeries, GeoDataFrame or a shapely geometry. CRS mis-matches are resolved if given a GeoSeries or GeoDataFrame. Cannot be used with mask. Defaults to None.
mask (dict | GeoDataFrame or GeoSeries | shapely Geometry, optional): Filter for features that intersect with the given dict-like geojson geometry, GeoSeries, GeoDataFrame or shapely geometry. CRS mis-matches are resolved if given a GeoSeries or GeoDataFrame. Cannot be used with bbox. Defaults to None.
rows (int or slice, optional): Load in specific rows by passing an integer (first n rows) or a slice() object.. Defaults to None.
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
encoding (str, optional): The encoding to use to read the file. Defaults to "utf-8".
"""
if not filename.startswith("http"):
filename = os.path.abspath(filename)
else:
filename = github_raw_url(filename)
ext = os.path.splitext(filename)[1].lower()
if ext == ".shp":
self.add_shp(
filename,
layer_name,
style,
hover_style,
style_callback,
fill_colors,
info_mode,
encoding,
)
elif ext in [".json", ".geojson"]:
self.add_geojson(
filename,
layer_name,
style,
hover_style,
style_callback,
fill_colors,
info_mode,
zoom_to_layer,
encoding,
)
else:
geojson = vector_to_geojson(
filename,
bbox=bbox,
mask=mask,
rows=rows,
epsg="4326",
**kwargs,
)
self.add_geojson(
geojson,
layer_name,
style,
hover_style,
style_callback,
fill_colors,
info_mode,
zoom_to_layer,
encoding,
)
def add_xy_data(
self,
in_csv,
x="longitude",
y="latitude",
label=None,
layer_name="Marker cluster",
):
"""Adds points from a CSV file containing lat/lon information and display data on the map.
Args:
in_csv (str): The file path to the input CSV file.
x (str, optional): The name of the column containing longitude coordinates. Defaults to "longitude".
y (str, optional): The name of the column containing latitude coordinates. Defaults to "latitude".
label (str, optional): The name of the column containing label information to used for marker popup. Defaults to None.
layer_name (str, optional): The layer name to use. Defaults to "Marker cluster".
Raises:
FileNotFoundError: The specified input csv does not exist.
ValueError: The specified x column does not exist.
ValueError: The specified y column does not exist.
ValueError: The specified label column does not exist.
"""
import pandas as pd
if isinstance(in_csv, pd.DataFrame):
df = in_csv
elif not in_csv.startswith("http") and (not os.path.exists(in_csv)):
raise FileNotFoundError("The specified input csv does not exist.")
else:
df = pd.read_csv(in_csv)
col_names = df.columns.values.tolist()
if x not in col_names:
raise ValueError(f"x must be one of the following: {', '.join(col_names)}")
if y not in col_names:
raise ValueError(f"y must be one of the following: {', '.join(col_names)}")
if label is not None and (label not in col_names):
raise ValueError(
f"label must be one of the following: {', '.join(col_names)}"
)
self.default_style = {"cursor": "wait"}
points = list(zip(df[y], df[x]))
if label is not None:
labels = df[label]
markers = [
ipyleaflet.Marker(
location=point,
draggable=False,
popup=widgets.HTML(str(labels[index])),
)
for index, point in enumerate(points)
]
else:
markers = [
ipyleaflet.Marker(location=point, draggable=False) for point in points
]
marker_cluster = ipyleaflet.MarkerCluster(markers=markers, name=layer_name)
self.add(marker_cluster)
self.default_style = {"cursor": "default"}
def add_point_layer(
self, filename, popup=None, layer_name="Marker Cluster", **kwargs
):
"""Adds a point layer to the map with a popup attribute.
Args:
filename (str): str, http url, path object or file-like object. Either the absolute or relative path to the file or URL to be opened, or any object with a read() method (such as an open file or StringIO)
popup (str | list, optional): Column name(s) to be used for popup. Defaults to None.
layer_name (str, optional): A layer name to use. Defaults to "Marker Cluster".
Raises:
ValueError: If the specified column name does not exist.
ValueError: If the specified column names do not exist.
"""
import warnings
warnings.filterwarnings("ignore")
check_package(name="geopandas", URL="https://geopandas.org")
import geopandas as gpd
import fiona
self.default_style = {"cursor": "wait"}
if isinstance(filename, gpd.GeoDataFrame):
gdf = filename
else:
if not filename.startswith("http"):
filename = os.path.abspath(filename)
ext = os.path.splitext(filename)[1].lower()
if ext == ".kml":
fiona.drvsupport.supported_drivers["KML"] = "rw"
gdf = gpd.read_file(filename, driver="KML", **kwargs)
else:
gdf = gpd.read_file(filename, **kwargs)
df = gdf.to_crs(epsg="4326")
col_names = df.columns.values.tolist()
if popup is not None:
if isinstance(popup, str) and (popup not in col_names):
raise ValueError(
f"popup must be one of the following: {', '.join(col_names)}"
)
elif isinstance(popup, list) and (
not all(item in col_names for item in popup)
):
raise ValueError(
f"All popup items must be select from: {', '.join(col_names)}"
)
df["x"] = df.geometry.x
df["y"] = df.geometry.y
points = list(zip(df["y"], df["x"]))
if popup is not None:
if isinstance(popup, str):
labels = df[popup]
markers = [
ipyleaflet.Marker(
location=point,
draggable=False,
popup=widgets.HTML(str(labels[index])),
)
for index, point in enumerate(points)
]
elif isinstance(popup, list):
labels = []
for i in range(len(points)):
label = ""
for item in popup:
label = label + str(item) + ": " + str(df[item][i]) + "<br>"
labels.append(label)
df["popup"] = labels
markers = [
ipyleaflet.Marker(
location=point,
draggable=False,
popup=widgets.HTML(labels[index]),
)
for index, point in enumerate(points)
]
else:
markers = [
ipyleaflet.Marker(location=point, draggable=False) for point in points
]
marker_cluster = ipyleaflet.MarkerCluster(markers=markers, name=layer_name)
self.add(marker_cluster)
self.default_style = {"cursor": "default"}
def add_points_from_xy(
self,
data,
x="longitude",
y="latitude",
popup=None,
layer_name="Marker Cluster",
color_column=None,
marker_colors=None,
icon_colors=["white"],
icon_names=["info"],
spin=False,
add_legend=True,
max_cluster_radius=80,
**kwargs,
):
"""Adds a marker cluster to the map.
Args:
data (str | pd.DataFrame): A csv or Pandas DataFrame containing x, y, z values.
x (str, optional): The column name for the x values. Defaults to "longitude".
y (str, optional): The column name for the y values. Defaults to "latitude".
popup (list, optional): A list of column names to be used as the popup. Defaults to None.
layer_name (str, optional): The name of the layer. Defaults to "Marker Cluster".
color_column (str, optional): The column name for the color values. Defaults to None.
marker_colors (list, optional): A list of colors to be used for the markers. Defaults to None.
icon_colors (list, optional): A list of colors to be used for the icons. Defaults to ['white'].
icon_names (list, optional): A list of names to be used for the icons. More icons can be found at https://fontawesome.com/v4/icons. Defaults to ['info'].
spin (bool, optional): If True, the icon will spin. Defaults to False.
add_legend (bool, optional): If True, a legend will be added to the map. Defaults to True.
max_cluster_radius (int, optional): The maximum cluster radius. Defaults to 80.
**kwargs: Other keyword arguments to pass to ipyleaflet.MarkerCluster(). For a list of available options,
see https://github.com/Leaflet/Leaflet.markercluster.
"""
import pandas as pd
color_options = [
"red",
"blue",
"green",
"purple",
"orange",
"darkred",
"lightred",
"beige",
"darkblue",
"darkgreen",
"cadetblue",
"darkpurple",
"white",
"pink",
"lightblue",
"lightgreen",
"gray",
"black",
"lightgray",
]
if isinstance(data, pd.DataFrame):
df = data
elif not data.startswith("http") and (not os.path.exists(data)):
raise FileNotFoundError("The specified input csv does not exist.")
elif data.endswith(".csv"):
df = pd.read_csv(data)
else:
import geopandas as gpd
gdf = gpd.read_file(data)
df = gdf_to_df(gdf)
df = points_from_xy(df, x, y)
col_names = df.columns.values.tolist()
if color_column is not None and color_column not in col_names:
raise ValueError(
f"The color column {color_column} does not exist in the dataframe."
)
if color_column is not None:
items = list(set(df[color_column]))
else:
items = None
if color_column is not None and marker_colors is None:
if len(items) > len(color_options):
raise ValueError(
f"The number of unique values in the color column {color_column} is greater than the number of available colors."
)
else:
marker_colors = color_options[: len(items)]
elif color_column is not None and marker_colors is not None:
if len(items) != len(marker_colors):
raise ValueError(
f"The number of unique values in the color column {color_column} is not equal to the number of available colors."
)
if items is not None:
if len(icon_colors) == 1:
icon_colors = icon_colors * len(items)
elif len(items) != len(icon_colors):
raise ValueError(
f"The number of unique values in the color column {color_column} is not equal to the number of available colors."
)
if len(icon_names) == 1:
icon_names = icon_names * len(items)
elif len(items) != len(icon_names):
raise ValueError(
f"The number of unique values in the color column {color_column} is not equal to the number of available colors."
)
if "geometry" in col_names:
col_names.remove("geometry")
if popup is not None:
if isinstance(popup, str) and (popup not in col_names):
raise ValueError(
f"popup must be one of the following: {', '.join(col_names)}"
)
elif isinstance(popup, list) and (
not all(item in col_names for item in popup)
):
raise ValueError(
f"All popup items must be select from: {', '.join(col_names)}"
)
else:
popup = col_names
df["x"] = df.geometry.x
df["y"] = df.geometry.y
points = list(zip(df["y"], df["x"]))
if popup is not None:
if isinstance(popup, str):
labels = df[popup]
markers = []
for index, point in enumerate(points):
if items is not None:
marker_color = marker_colors[
items.index(df[color_column][index])
]
icon_name = icon_names[items.index(df[color_column][index])]
icon_color = icon_colors[items.index(df[color_column][index])]
marker_icon = ipyleaflet.AwesomeIcon(
name=icon_name,
marker_color=marker_color,
icon_color=icon_color,
spin=spin,
)
else:
marker_icon = None
marker = ipyleaflet.Marker(
location=point,
draggable=False,
popup=widgets.HTML(str(labels[index])),
icon=marker_icon,
)
markers.append(marker)
elif isinstance(popup, list):
labels = []
for i in range(len(points)):
label = ""
for item in popup:
label = (
label
+ "<b>"
+ str(item)
+ "</b>"
+ ": "
+ str(df[item][i])
+ "<br>"
)
labels.append(label)
df["popup"] = labels
markers = []
for index, point in enumerate(points):
if items is not None:
marker_color = marker_colors[
items.index(df[color_column][index])
]
icon_name = icon_names[items.index(df[color_column][index])]
icon_color = icon_colors[items.index(df[color_column][index])]
marker_icon = ipyleaflet.AwesomeIcon(
name=icon_name,
marker_color=marker_color,
icon_color=icon_color,
spin=spin,
)
else:
marker_icon = None
marker = ipyleaflet.Marker(
location=point,
draggable=False,
popup=widgets.HTML(labels[index]),
icon=marker_icon,
)
markers.append(marker)
else:
markers = []
for point in points:
if items is not None:
marker_color = marker_colors[items.index(df[color_column][index])]
icon_name = icon_names[items.index(df[color_column][index])]
icon_color = icon_colors[items.index(df[color_column][index])]
marker_icon = ipyleaflet.AwesomeIcon(
name=icon_name,
marker_color=marker_color,
icon_color=icon_color,
spin=spin,
)
else:
marker_icon = None
marker = ipyleaflet.Marker(
location=point, draggable=False, icon=marker_icon
)
markers.append(marker)
marker_cluster = ipyleaflet.MarkerCluster(
markers=markers,
name=layer_name,
max_cluster_radius=max_cluster_radius,
**kwargs,
)
self.add(marker_cluster)
if items is not None and add_legend:
marker_colors = [check_color(c) for c in marker_colors]
self.add_legend(
title=color_column.title(), colors=marker_colors, labels=items
)
self.default_style = {"cursor": "default"}
add_marker_cluster = add_points_from_xy
def add_heatmap(
self,
data,
latitude="latitude",
longitude="longitude",
value="value",
name="Heat map",
radius=25,
**kwargs,
):
"""Adds a heat map to the map. Reference: https://ipyleaflet.readthedocs.io/en/latest/api_reference/heatmap.html
Args:
data (str | list | pd.DataFrame): File path or HTTP URL to the input file or a list of data points in the format of [[x1, y1, z1], [x2, y2, z2]]. For example, https://raw.githubusercontent.com/opengeos/leafmap/master/examples/data/world_cities.csv
latitude (str, optional): The column name of latitude. Defaults to "latitude".
longitude (str, optional): The column name of longitude. Defaults to "longitude".
value (str, optional): The column name of values. Defaults to "value".
name (str, optional): Layer name to use. Defaults to "Heat map".
radius (int, optional): Radius of each “point” of the heatmap. Defaults to 25.
Raises:
ValueError: If data is not a list.
"""
import pandas as pd
from ipyleaflet import Heatmap
try:
if isinstance(data, str):
df = pd.read_csv(data)
data = df[[latitude, longitude, value]].values.tolist()
elif isinstance(data, pd.DataFrame):
data = data[[latitude, longitude, value]].values.tolist()
elif isinstance(data, list):
pass
else:
raise ValueError("data must be a list, a DataFrame, or a file path.")
heatmap = Heatmap(locations=data, radius=radius, name=name, **kwargs)
self.add(heatmap)
except Exception as e:
raise Exception(e)
def add_labels(
self,
data,
column,
font_size="12pt",
font_color="black",
font_family="arial",
font_weight="normal",
x="longitude",
y="latitude",
draggable=True,
layer_name="Labels",
**kwargs,
):
"""Adds a label layer to the map. Reference: https://ipyleaflet.readthedocs.io/en/latest/api_reference/divicon.html
Args:
data (pd.DataFrame | gpd.GeoDataFrame | str): The input data to label.
column (str): The column name of the data to label.
font_size (str, optional): The font size of the labels. Defaults to "12pt".
font_color (str, optional): The font color of the labels. Defaults to "black".
font_family (str, optional): The font family of the labels. Defaults to "arial".
font_weight (str, optional): The font weight of the labels, can be normal, bold. Defaults to "normal".
x (str, optional): The column name of the longitude. Defaults to "longitude".
y (str, optional): The column name of the latitude. Defaults to "latitude".
draggable (bool, optional): Whether the labels are draggable. Defaults to True.
layer_name (str, optional): Layer name to use. Defaults to "Labels".
"""
import warnings
import pandas as pd
warnings.filterwarnings("ignore")
if isinstance(data, pd.DataFrame):
df = data
if "geometry" in data.columns or ("geom" in data.columns):
df[x] = df.centroid.x
df[y] = df.centroid.y
elif isinstance(data, str):
ext = os.path.splitext(data)[1]
if ext == ".csv":
df = pd.read_csv(data)
elif ext in [".geojson", ".json", ".shp", ".gpkg"]:
try:
import geopandas as gpd
df = gpd.read_file(data)
df[x] = df.centroid.x
df[y] = df.centroid.y
except Exception as _:
print("geopandas is required to read geojson.")
return
else:
raise ValueError(
"data must be a pd.DataFrame, gpd.GeoDataFrame, or an ee.FeatureCollection."
)
if column not in df.columns:
raise ValueError(f"column must be one of {', '.join(df.columns)}.")
if x not in df.columns:
raise ValueError(f"column must be one of {', '.join(df.columns)}.")
if y not in df.columns:
raise ValueError(f"column must be one of {', '.join(df.columns)}.")
try:
size = int(font_size.replace("pt", ""))
except:
raise ValueError("font_size must be something like '10pt'")
labels = []
for index in df.index:
html = f'<div style="font-size: {font_size};color:{font_color};font-family:{font_family};font-weight: {font_weight}">{df[column][index]}</div>'
marker = ipyleaflet.Marker(
location=[df[y][index], df[x][index]],
icon=ipyleaflet.DivIcon(
icon_size=(1, 1),
icon_anchor=(size, size),
html=html,
**kwargs,
),
draggable=draggable,
)
labels.append(marker)
layer_group = ipyleaflet.LayerGroup(layers=labels, name=layer_name)
self.add(layer_group)
self.labels = layer_group
def remove_labels(self):
"""Removes all labels from the map."""
if hasattr(self, "labels"):
self.remove_layer(self.labels)
delattr(self, "labels")
def add_planet_by_month(
self,
year=2016,
month=1,
layer_name=None,
api_key=None,
token_name="PLANET_API_KEY",
**kwargs,
):
"""Adds a Planet global mosaic by month to the map. To get a Planet API key, see https://developers.planet.com/quickstart/apis
Args:
year (int, optional): The year of Planet global mosaic, must be >=2016. Defaults to 2016.
month (int, optional): The month of Planet global mosaic, must be 1-12. Defaults to 1.
layer_name (str, optional): The layer name to use. Defaults to None.
api_key (str, optional): The Planet API key. Defaults to None.
token_name (str, optional): The environment variable name of the API key. Defaults to "PLANET_API_KEY".
"""
if layer_name is None and "name" in kwargs:
layer_name = kwargs.pop("name")
layer = planet_tile_by_month(year, month, layer_name, api_key, token_name)
self.add(layer)
def add_planet_by_quarter(
self,
year=2016,
quarter=1,
layer_name=None,
api_key=None,
token_name="PLANET_API_KEY",
**kwargs,
):
"""Adds a Planet global mosaic by quarter to the map. To get a Planet API key, see https://developers.planet.com/quickstart/apis
Args:
year (int, optional): The year of Planet global mosaic, must be >=2016. Defaults to 2016.
quarter (int, optional): The quarter of Planet global mosaic, must be 1-12. Defaults to 1.
layer_name (str, optional): The layer name to use. Defaults to None.
api_key (str, optional): The Planet API key. Defaults to None.
token_name (str, optional): The environment variable name of the API key. Defaults to "PLANET_API_KEY".
"""
if layer_name is None and "name" in kwargs:
layer_name = kwargs.pop("name")
layer = planet_tile_by_quarter(year, quarter, layer_name, api_key, token_name)
self.add(layer)
def add_time_slider(
self,
layers={},
labels=None,
time_interval=1,
position="bottomright",
slider_length="150px",
zoom_to_layer=False,
**kwargs,
):
"""Adds a time slider to the map.
Args:
layers (dict, optional): The dictionary containing a set of XYZ tile layers.
labels (list, optional): The list of labels to be used for the time series. Defaults to None.
time_interval (int, optional): Time interval in seconds. Defaults to 1.
position (str, optional): Position to place the time slider, can be any of ['topleft', 'topright', 'bottomleft', 'bottomright']. Defaults to "bottomright".
slider_length (str, optional): Length of the time slider. Defaults to "150px".
zoom_to_layer (bool, optional): Whether to zoom to the extent of the selected layer. Defaults to False.
"""
from .toolbar import time_slider
time_slider(
self,
layers,
labels,
time_interval,
position,
slider_length,
zoom_to_layer,
**kwargs,
)
def static_map(self, width=950, height=600, out_file=None, **kwargs):
"""Display an ipyleaflet static map in a Jupyter Notebook.
Args
m (ipyleaflet.Map): An ipyleaflet map.
width (int, optional): Width of the map. Defaults to 950.
height (int, optional): Height of the map. Defaults to 600.
read_only (bool, optional): Whether to hide the side panel to disable map customization. Defaults to False.
out_file (str, optional): Output html file path. Defaults to None.
"""
if isinstance(self, ipyleaflet.Map):
if out_file is None:
out_file = "./cache/" + "leafmap_" + random_string(3) + ".html"
out_dir = os.path.abspath(os.path.dirname(out_file))
if not os.path.exists(out_dir):
os.makedirs(out_dir)
self.to_html(out_file)
display_html(src=out_file, width=width, height=height)
else:
raise TypeError("The provided map is not an ipyleaflet map.")
def add_census_data(self, wms, layer, census_dict=None, **kwargs):
"""Adds a census data layer to the map.
Args:
wms (str): The wms to use. For example, "Current", "ACS 2021", "Census 2020". See the complete list at https://tigerweb.geo.census.gov/tigerwebmain/TIGERweb_wms.html
layer (str): The layer name to add to the map.
census_dict (dict, optional): A dictionary containing census data. Defaults to None. It can be obtained from the get_census_dict() function.
"""
try:
if census_dict is None:
census_dict = get_census_dict()
if wms not in census_dict.keys():
raise ValueError(
f"The provided WMS is invalid. It must be one of {census_dict.keys()}"
)
layers = census_dict[wms]["layers"]
if layer not in layers:
raise ValueError(
f"The layer name is not valid. It must be one of {layers}"
)
url = census_dict[wms]["url"]
if "name" not in kwargs:
kwargs["name"] = layer
if "attribution" not in kwargs:
kwargs["attribution"] = "U.S. Census Bureau"
if "format" not in kwargs:
kwargs["format"] = "image/png"
if "transparent" not in kwargs:
kwargs["transparent"] = True
self.add_wms_layer(url, layer, **kwargs)
except Exception as e:
raise Exception(e)
def add_xyz_service(self, provider, **kwargs):
"""Add a XYZ tile layer to the map.
Args:
provider (str): A tile layer name starts with xyz or qms. For example, xyz.OpenTopoMap,
Raises:
ValueError: The provider is not valid. It must start with xyz or qms.
"""
import xyzservices
import xyzservices.providers as xyz
if provider.startswith("xyz"):
name = provider[4:]
xyz_provider = xyz.flatten()[name]
url = xyz_provider.build_url()
attribution = xyz_provider.attribution
if attribution.strip() == "":
attribution = " "
self.add_tile_layer(url, name, attribution)
elif provider.startswith("qms"):
name = provider[4:]
qms_provider = xyzservices.TileProvider.from_qms(name)
url = qms_provider.build_url()
attribution = qms_provider.attribution
if attribution.strip() == "":
attribution = " "
self.add_tile_layer(url, name, attribution)
else:
raise ValueError(
f"The provider {provider} is not valid. It must start with xyz or qms."
)
def add_title(self, title, align="center", font_size="16px", style=None, **kwargs):
print("The ipyleaflet map does not support titles.")
def get_pc_collections(self):
"""Get the list of Microsoft Planetary Computer collections."""
if not hasattr(self, "pc_collections"):
setattr(self, "pc_collections", get_pc_collections())
def save_draw_features(self, out_file, indent=4, crs="epsg:4326", **kwargs):
"""Save the draw features to a file.
Args:
out_file (str): The output file path.
indent (int, optional): The indentation level when saving data as a GeoJSON. Defaults to 4.
crs (str, optional): The CRS of the output GeoJSON. Defaults to "epsg:4326".
"""
import geopandas as gpd
out_file = check_file_path(out_file)
self.update_draw_features()
geojson = {
"type": "FeatureCollection",
"features": self.draw_features,
}
gdf = gpd.GeoDataFrame.from_features(geojson)
gdf.crs = "epsg:4326"
gdf.to_crs(crs).to_file(out_file, **kwargs)
def update_draw_features(self):
"""Update the draw features by removing features that have been edited and no longer exist."""
geometries = [feature["geometry"] for feature in self.draw_control.data]
for feature in self.draw_features:
if feature["geometry"] not in geometries:
self.draw_features.remove(feature)
def get_draw_props(self, n=None, return_df=False):
"""Get the properties of the draw features.
Args:
n (int, optional): The maximum number of attributes to return. Defaults to None.
return_df (bool, optional): If True, return a pandas dataframe. Defaults to False.
Returns:
pd.DataFrame: A pandas dataframe containing the properties of the draw features.
"""
import pandas as pd
props = self.edit_props[:]
for feature in self.draw_features:
for prop in feature["properties"]:
if prop not in self.edit_props:
self.edit_props.append(prop)
props.append(prop)
if return_df:
if isinstance(n, int) and n > len(props):
props = props + [""] * (n - len(props))
df = pd.DataFrame({"Key": props, "Value": [""] * len(props)})
df.index += 1
return df
else:
return props
def update_draw_props(self, df):
"""Update the draw features properties.
Args:
df (pd.DataFrame): A pandas dataframe containing the properties of the draw features.
"""
df.dropna(inplace=True)
df = df[df["Key"].astype(bool)]
if len(df) > 0:
props = df.set_index("Key").to_dict()["Value"]
if self.draw_control.last_action == "edited":
self.update_draw_features()
if len(self.draw_features) > 0:
if self.draw_control.last_action == "created":
self.draw_features[-1]["properties"] = props
elif self.draw_control.last_action == "edited":
for feature in self.draw_features:
if (
self.draw_control.last_draw["geometry"]
== feature["geometry"]
):
feature["properties"] = props
for prop in list(props.keys()):
if prop not in self.edit_props:
self.edit_props.append(prop)
def edit_vector(self, data, **kwargs):
"""Edit a vector layer.
Args:
data (dict | str): The data to edit. It can be a GeoJSON dictionary or a file path.
"""
if isinstance(data, str):
check_package("geopandas", "https://geopandas.org")
import geopandas as gpd
gdf = gpd.read_file(data, **kwargs)
geojson = gdf_to_geojson(gdf, epsg=4326, tuple_to_list=True)
elif isinstance(data, dict):
geojson = data
else:
raise ValueError(
"The data must be a GeoJSON dictionary or a file path to a vector dataset."
)
self.draw_control.data = self.draw_control.data + (geojson["features"])
self.draw_features = self.draw_features + (geojson["features"])
def add_velocity(
self,
data,
zonal_speed,
meridional_speed,
latitude_dimension="lat",
longitude_dimension="lon",
level_dimension="lev",
level_index=0,
time_index=0,
velocity_scale=0.01,
max_velocity=20,
display_options={},
name="Velocity",
):
"""Add a velocity layer to the map.
Args:
data (str | xr.Dataset): The data to use for the velocity layer. It can be a file path to a NetCDF file or an xarray Dataset.
zonal_speed (str): Name of the zonal speed in the dataset. See https://en.wikipedia.org/wiki/Zonal_and_meridional_flow.
meridional_speed (str): Name of the meridional speed in the dataset. See https://en.wikipedia.org/wiki/Zonal_and_meridional_flow.
latitude_dimension (str, optional): Name of the latitude dimension in the dataset. Defaults to 'lat'.
longitude_dimension (str, optional): Name of the longitude dimension in the dataset. Defaults to 'lon'.
level_dimension (str, optional): Name of the level dimension in the dataset. Defaults to 'lev'.
level_index (int, optional): The index of the level dimension to display. Defaults to 0.
time_index (int, optional): The index of the time dimension to display. Defaults to 0.
velocity_scale (float, optional): The scale of the velocity. Defaults to 0.01.
max_velocity (int, optional): The maximum velocity to display. Defaults to 20.
display_options (dict, optional): The display options for the velocity layer. Defaults to {}. See https://bit.ly/3uf8t6w.
name (str, optional): Layer name to use . Defaults to 'Velocity'.
Raises:
ImportError: If the xarray package is not installed.
ValueError: If the data is not a NetCDF file or an xarray Dataset.
"""
try:
import xarray as xr
from ipyleaflet.velocity import Velocity
except ImportError:
raise ImportError(
"The xarray package is required to add a velocity layer. "
"Please install it with `pip install xarray`."
)
if isinstance(data, str):
if data.startswith("http"):
data = download_file(data)
ds = xr.open_dataset(data)
elif isinstance(data, xr.Dataset):
ds = data
else:
raise ValueError("The data must be a file path or xarray dataset.")
coords = list(ds.coords.keys())
# Rasterio does not handle time or levels. So we must drop them
if "time" in coords:
ds = ds.isel(time=time_index, drop=True)
params = {level_dimension: level_index}
if level_dimension in coords:
ds = ds.isel(drop=True, **params)
wind = Velocity(
data=ds,
zonal_speed=zonal_speed,
meridional_speed=meridional_speed,
latitude_dimension=latitude_dimension,
longitude_dimension=longitude_dimension,
velocity_scale=velocity_scale,
max_velocity=max_velocity,
display_options=display_options,
name=name,
)
self.add(wind)
def add_data(
self,
data,
column,
colors=None,
labels=None,
cmap=None,
scheme="Quantiles",
k=5,
add_legend=True,
legend_title=None,
legend_position="bottomright",
legend_kwds=None,
classification_kwds=None,
layer_name="Untitled",
style=None,
hover_style=None,
style_callback=None,
marker_radius=10,
marker_args=None,
info_mode="on_hover",
encoding="utf-8",
**kwargs,
):
"""Add vector data to the map with a variety of classification schemes.
Args:
data (str | pd.DataFrame | gpd.GeoDataFrame): The data to classify. It can be a filepath to a vector dataset, a pandas dataframe, or a geopandas geodataframe.
column (str): The column to classify.
cmap (str, optional): The name of a colormap recognized by matplotlib. Defaults to None.
colors (list, optional): A list of colors to use for the classification. Defaults to None.
labels (list, optional): A list of labels to use for the legend. Defaults to None.
scheme (str, optional): Name of a choropleth classification scheme (requires mapclassify).
Name of a choropleth classification scheme (requires mapclassify).
A mapclassify.MapClassifier object will be used
under the hood. Supported are all schemes provided by mapclassify (e.g.
'BoxPlot', 'EqualInterval', 'FisherJenks', 'FisherJenksSampled',
'HeadTailBreaks', 'JenksCaspall', 'JenksCaspallForced',
'JenksCaspallSampled', 'MaxP', 'MaximumBreaks',
'NaturalBreaks', 'Quantiles', 'Percentiles', 'StdMean',
'UserDefined'). Arguments can be passed in classification_kwds.
k (int, optional): Number of classes (ignored if scheme is None or if column is categorical). Default to 5.
add_legend (bool, optional): Whether to add a legend to the map. Defaults to True.
legend_title (str, optional): The title of the legend. Defaults to None.
legend_position (str, optional): The position of the legend. Can be 'topleft', 'topright', 'bottomleft', or 'bottomright'. Defaults to 'bottomright'.
legend_kwds (dict, optional): Keyword arguments to pass to :func:`matplotlib.pyplot.legend` or `matplotlib.pyplot.colorbar`. Defaults to None.
Keyword arguments to pass to :func:`matplotlib.pyplot.legend` or
Additional accepted keywords when `scheme` is specified:
fmt : string
A formatting specification for the bin edges of the classes in the
legend. For example, to have no decimals: ``{"fmt": "{:.0f}"}``.
labels : list-like
A list of legend labels to override the auto-generated labblels.
Needs to have the same number of elements as the number of
classes (`k`).
interval : boolean (default False)
An option to control brackets from mapclassify legend.
If True, open/closed interval brackets are shown in the legend.
classification_kwds (dict, optional): Keyword arguments to pass to mapclassify. Defaults to None.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to None.
style is a dictionary of the following form:
style = {
"stroke": False,
"color": "#ff0000",
"weight": 1,
"opacity": 1,
"fill": True,
"fillColor": "#ffffff",
"fillOpacity": 1.0,
"dashArray": "9"
"clickable": True,
}
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
hover_style is a dictionary of the following form:
hover_style = {"weight": style["weight"] + 1, "fillOpacity": 0.5}
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
style_callback is a function that takes the feature as argument and should return a dictionary of the following form:
style_callback = lambda feat: {"fillColor": feat["properties"]["color"]}
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
encoding (str, optional): The encoding of the GeoJSON file. Defaults to "utf-8".
**kwargs: Additional keyword arguments to pass to the GeoJSON class, such as fields, which can be a list of column names to be included in the popup.
"""
gdf, legend_dict = classify(
data=data,
column=column,
cmap=cmap,
colors=colors,
labels=labels,
scheme=scheme,
k=k,
legend_kwds=legend_kwds,
classification_kwds=classification_kwds,
)
if legend_title is None:
legend_title = column
if style is None:
style = {
# "stroke": False,
# "color": "#ff0000",
"weight": 1,
"opacity": 1,
# "fill": True,
# "fillColor": "#ffffff",
"fillOpacity": 1.0,
# "dashArray": "9"
# "clickable": True,
}
if colors is not None:
style["color"] = "#000000"
if hover_style is None:
hover_style = {"weight": style["weight"] + 1, "fillOpacity": 0.5}
if style_callback is None:
style_callback = lambda feat: {"fillColor": feat["properties"]["color"]}
if gdf.geometry.geom_type.unique().tolist()[0] == "Point":
columns = gdf.columns.tolist()
if "category" in columns:
columns.remove("category")
if "color" in columns:
columns.remove("color")
if marker_args is None:
marker_args = {}
if "fill_color" not in marker_args:
marker_args["fill_color"] = gdf["color"].tolist()
if "stroke" not in marker_args:
marker_args["stroke"] = False
if "fill_opacity" not in marker_args:
marker_args["fill_opacity"] = 0.8
marker_args["radius"] = marker_radius
self.add_markers(gdf[columns], layer_name=layer_name, **marker_args)
else:
self.add_gdf(
gdf,
layer_name=layer_name,
style=style,
hover_style=hover_style,
style_callback=style_callback,
info_mode=info_mode,
encoding=encoding,
**kwargs,
)
if add_legend:
self.add_legend(
title=legend_title, legend_dict=legend_dict, position=legend_position
)
def user_roi_bounds(self, decimals=4):
"""Get the bounds of the user drawn ROI as a tuple of (minx, miny, maxx, maxy).
Args:
decimals (int, optional): The number of decimals to round the coordinates to. Defaults to 4.
Returns:
list: The bounds of the user drawn ROI as a tuple of (minx, miny, maxx, maxy).
"""
if self.user_roi is not None:
return geometry_bounds(self.user_roi, decimals=decimals)
else:
return None
def add_widget(
self,
content,
position="bottomright",
add_header=False,
opened=True,
show_close_button=True,
widget_icon="gear",
close_button_icon="times",
widget_args={},
close_button_args={},
display_widget=None,
**kwargs,
):
"""Add a widget (e.g., text, HTML, figure) to the map.
Args:
content (str | ipywidgets.Widget | object): The widget to add.
position (str, optional): The position of the widget. Defaults to "bottomright".
add_header (bool, optional): Whether to add a header with close buttons to the widget. Defaults to False.
opened (bool, optional): Whether to open the toolbar. Defaults to True.
show_close_button (bool, optional): Whether to show the close button. Defaults to True.
widget_icon (str, optional): The icon name for the toolbar button. Defaults to 'gear'.
close_button_icon (str, optional): The icon name for the close button. Defaults to "times".
widget_args (dict, optional): Additional arguments to pass to the toolbar button. Defaults to {}.
close_button_args (dict, optional): Additional arguments to pass to the close button. Defaults to {}.
display_widget (ipywidgets.Widget, optional): The widget to be displayed when the toolbar is clicked.
**kwargs: Additional arguments to pass to the HTML or Output widgets
"""
allowed_positions = ["topleft", "topright", "bottomleft", "bottomright"]
if position not in allowed_positions:
raise Exception(f"position must be one of {allowed_positions}")
if "layout" not in kwargs:
kwargs["layout"] = widgets.Layout(padding="0px 4px 0px 4px")
try:
if add_header:
if isinstance(content, str):
widget = widgets.HTML(value=content, **kwargs)
else:
widget = content
widget_template(
widget,
opened,
show_close_button,
widget_icon,
close_button_icon,
widget_args,
close_button_args,
display_widget,
self,
position,
)
else:
if isinstance(content, str):
widget = widgets.HTML(value=content, **kwargs)
else:
widget = widgets.Output(**kwargs)
with widget:
display(content)
control = ipyleaflet.WidgetControl(widget=widget, position=position)
self.add(control)
except Exception as e:
raise Exception(f"Error adding widget: {e}")
def add_image(self, image, position="bottomright", **kwargs):
"""Add an image to the map.
Args:
image (str | ipywidgets.Image): The image to add.
position (str, optional): The position of the image, can be one of "topleft",
"topright", "bottomleft", "bottomright". Defaults to "bottomright".
"""
if isinstance(image, str):
if image.startswith("http"):
image = widgets.Image(value=requests.get(image).content, **kwargs)
elif os.path.exists(image):
with open(image, "rb") as f:
image = widgets.Image(value=f.read(), **kwargs)
elif isinstance(image, widgets.Image):
pass
else:
raise Exception("Invalid image")
self.add_widget(image, position=position)
def add_html(self, html, position="bottomright", **kwargs):
"""Add HTML to the map.
Args:
html (str): The HTML to add.
position (str, optional): The position of the HTML, can be one of "topleft",
"topright", "bottomleft", "bottomright". Defaults to "bottomright".
"""
# Check if an HTML string contains local images and convert them to base64.
html = check_html_string(html)
self.add_widget(html, position=position, **kwargs)
def add_text(
self,
text,
fontsize=20,
fontcolor="black",
bold=False,
padding="5px",
background=True,
bg_color="white",
border_radius="5px",
position="bottomright",
**kwargs,
):
"""Add text to the map.
Args:
text (str): The text to add.
fontsize (int, optional): The font size. Defaults to 20.
fontcolor (str, optional): The font color. Defaults to "black".
bold (bool, optional): Whether to use bold font. Defaults to False.
padding (str, optional): The padding. Defaults to "5px".
background (bool, optional): Whether to use background. Defaults to True.
bg_color (str, optional): The background color. Defaults to "white".
border_radius (str, optional): The border radius. Defaults to "5px".
position (str, optional): The position of the widget. Defaults to "bottomright".
"""
if background:
text = f"""<div style="font-size: {fontsize}px; color: {fontcolor}; font-weight: {'bold' if bold else 'normal'};
padding: {padding}; background-color: {bg_color};
border-radius: {border_radius};">{text}</div>"""
else:
text = f"""<div style="font-size: {fontsize}px; color: {fontcolor}; font-weight: {'bold' if bold else 'normal'};
padding: {padding};">{text}</div>"""
self.add_html(text, position=position, **kwargs)
def get_bbox(self):
"""Get the bounds of the map as a list of [(]minx, miny, maxx, maxy].
Returns:
list: The bounds of the map as a list of [(]minx, miny, maxx, maxy].
"""
bounds = self.bounds
bbox = [bounds[0][1], bounds[0][0], bounds[1][1], bounds[1][0]]
return bbox
def oam_search(
self,
bbox=None,
start_date=None,
end_date=None,
limit=100,
info_mode="on_click",
layer_args={},
add_image=True,
**kwargs,
):
"""Search OpenAerialMap for images within a bounding box and time range.
Args:
bbox (list | str, optional): The bounding box [xmin, ymin, xmax, ymax] to search within. Defaults to None.
start_date (str, optional): The start date to search within, such as "2015-04-20T00:00:00.000Z". Defaults to None.
end_date (str, optional): The end date to search within, such as "2015-04-21T00:00:00.000Z". Defaults to None.
limit (int, optional): The maximum number of results to return. Defaults to 100.
info_mode (str, optional): The mode to use for the info popup. Can be 'on_hover' or 'on_click'. Defaults to 'on_click'.
layer_args (dict, optional): The layer arguments for add_gdf() function. Defaults to {}.
add_image (bool, optional): Whether to add the first 10 images to the map. Defaults to True.
**kwargs: Additional keyword arguments to pass to the API. See https://hotosm.github.io/oam-api/
"""
bounds = self.bounds
if bbox is None:
if self.user_roi is not None:
bbox = self.user_roi_bounds()
else:
bbox = [bounds[0][1], bounds[0][0], bounds[1][1], bounds[1][0]]
if self.zoom <= 4:
print("Zoom in to search for images")
return None
gdf = oam_search(
bbox=bbox, start_date=start_date, end_date=end_date, limit=limit, **kwargs
)
if "layer_name" not in layer_args:
layer_args["layer_name"] = "Footprints"
if "style" not in layer_args:
layer_args["style"] = {
# "stroke": True,
"color": "#3388ff",
"weight": 2,
"opacity": 1,
# "fill": True,
# "fillColor": "#ffffff",
"fillOpacity": 0,
# "dashArray": "9"
# "clickable": True,
}
if "hover_style" not in layer_args:
layer_args["hover_style"] = {"weight": layer_args["style"]["weight"] + 2}
if gdf is not None:
setattr(self, "oam_gdf", gdf)
self.add_gdf(gdf, info_mode=info_mode, **layer_args)
if add_image:
ids = gdf["_id"].tolist()
images = gdf["tms"].tolist()
if len(images) > 5:
print(f"Found {len(images)} images. \nShowing the first 5.")
for index, image in enumerate(images):
if index == 5:
break
self.add_tile_layer(
url=image, name=ids[index], attribution="OpenAerialMap"
)
else:
print("No images found.")
def set_catalog_source(self, source):
"""Set the catalog source.
Args:
catalog_source (str, optional): The catalog source. Defaults to "landsat".
"""
if not isinstance(source, dict):
raise TypeError(
"The source must be a dictionary in the format of {label: url, label2:url2}, \
such as {'Element84': 'https://earth-search.aws.element84.com/v1'}"
)
if not hasattr(self, "_STAC_CATALOGS"):
self.catalog_source = {}
self._STAC_CATALOGS = source
def clear_drawings(self):
"""Clear drawings on the map."""
self.draw_control.clear()
self.draw_features = []
self.user_rois = None
self.user_roi = None
def add_layer_manager(self, position="topright", opened=True):
"""Add the Layer Manager to the map.
Args:
position (str, optional): The position of the Layer Manager. Defaults to "topright".
"""
from .toolbar import layer_manager_gui
layer_manager_gui(self, position, opened)
def update_layer_manager(self):
"""Update the Layer Manager."""
from .toolbar import layer_manager_gui
self.layer_manager_widget.children = layer_manager_gui(self, return_widget=True)
def add_oam_gui(self, position="topright", opened=True):
"""Add the OpenAerialMap search widget to the map.
Args:
position (str, optional): The position of the widget. Defaults to "topright".
opened (bool, optional): Whether the widget is open. Defaults to True.
"""
from .toolbar import oam_search_gui
oam_search_gui(self, position, opened)
def add_stac_gui(self, position="topright", opened=True):
"""Add the STAC search widget to the map.
Args:
position (str, optional): The position of the widget. Defaults to "topright".
opened (bool, optional): Whether the widget is open. Defaults to True.
"""
from .toolbar import stac_gui
stac_gui(self, position, opened)
def add_inspector_gui(self, position="topright", opened=True):
"""Add the Inspector widget to the map.
Args:
position (str, optional): The position of the widget. Defaults to "topright".
opened (bool, optional): Whether the widget is open. Defaults to True.
"""
from .toolbar import inspector_gui
inspector_gui(self, position, opened)
def add_basemap_gui(self, position="topright"):
"""Add the basemap widget to the map.
Args:
position (str, optional): The position of the widget. Defaults to "topright".
"""
from .toolbar import change_basemap
change_basemap(self, position)
def add_gui(
self, name, position="topright", opened=True, show_close_button=True, **kwargs
):
"""Add a GUI to the map.
Args:
name (str): The name of the GUI. Options include "layer_manager", "inspector", "plot", and "timelapse".
position (str, optional): The position of the GUI. Defaults to "topright".
opened (bool, optional): Whether the GUI is opened. Defaults to True.
show_close_button (bool, optional): Whether to show the close button. Defaults to True.
"""
name = name.lower()
if name == "stac":
self.add_stac_gui(position=position, opened=opened, **kwargs)
elif name == "basemap":
self.add_basemap_gui(position=position, **kwargs)
elif name == "inspector":
self.add_inspector_gui(position=position, opened=opened, **kwargs)
elif name == "layer_manager":
self.add_layer_manager(position=position, opened=opened, **kwargs)
elif name == "oam":
self.add_oam_gui(position=position, opened=opened, **kwargs)
add(self, object)
¶
Adds a layer to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
layer |
object |
The layer to add to the map. |
required |
Source code in leafmap/leafmap.py
def add(self, object):
"""Adds a layer to the map.
Args:
layer (object): The layer to add to the map.
"""
if isinstance(object, str):
if object in basemaps.keys():
object = get_basemap(object)
super().add(object)
if hasattr(self, "layer_manager_widget"):
self.update_layer_manager()
add_basemap(self, basemap='HYBRID', show=True, **kwargs)
¶
Adds a basemap to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
basemap |
str |
Can be one of string from basemaps. Defaults to 'HYBRID'. |
'HYBRID' |
visible |
bool |
Whether the basemap is visible or not. Defaults to True. |
required |
**kwargs |
Keyword arguments for the TileLayer. |
{} |
Source code in leafmap/leafmap.py
def add_basemap(self, basemap="HYBRID", show=True, **kwargs):
"""Adds a basemap to the map.
Args:
basemap (str, optional): Can be one of string from basemaps. Defaults to 'HYBRID'.
visible (bool, optional): Whether the basemap is visible or not. Defaults to True.
**kwargs: Keyword arguments for the TileLayer.
"""
import xyzservices
try:
layer_names = self.get_layer_names()
map_dict = {
"ROADMAP": "Google Maps",
"SATELLITE": "Google Satellite",
"TERRAIN": "Google Terrain",
"HYBRID": "Google Hybrid",
}
if isinstance(basemap, str):
if basemap.upper() in map_dict:
layer = get_google_map(basemap.upper(), **kwargs)
layer.visible = show
self.add(layer)
return
if isinstance(basemap, xyzservices.TileProvider):
name = basemap.name
url = basemap.build_url()
attribution = basemap.attribution
if "max_zoom" in basemap.keys():
max_zoom = basemap["max_zoom"]
else:
max_zoom = 22
layer = ipyleaflet.TileLayer(
url=url,
name=name,
max_zoom=max_zoom,
attribution=attribution,
visible=show,
**kwargs,
)
self.add(layer)
arc_add_layer(url, name)
elif basemap in basemaps and basemaps[basemap].name not in layer_names:
self.add(basemap)
self.layers[-1].visible = show
arc_add_layer(basemaps[basemap].url, basemap)
elif basemap in basemaps and basemaps[basemap].name in layer_names:
print(f"{basemap} has been already added before.")
else:
print(
"Basemap can only be one of the following:\n {}".format(
"\n ".join(basemaps.keys())
)
)
except Exception as e:
raise ValueError(
"Basemap can only be one of the following:\n {}".format(
"\n ".join(basemaps.keys())
)
)
add_basemap_gui(self, position='topright')
¶
Add the basemap widget to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
position |
str |
The position of the widget. Defaults to "topright". |
'topright' |
Source code in leafmap/leafmap.py
def add_basemap_gui(self, position="topright"):
"""Add the basemap widget to the map.
Args:
position (str, optional): The position of the widget. Defaults to "topright".
"""
from .toolbar import change_basemap
change_basemap(self, position)
add_census_data(self, wms, layer, census_dict=None, **kwargs)
¶
Adds a census data layer to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
wms |
str |
The wms to use. For example, "Current", "ACS 2021", "Census 2020". See the complete list at https://tigerweb.geo.census.gov/tigerwebmain/TIGERweb_wms.html |
required |
layer |
str |
The layer name to add to the map. |
required |
census_dict |
dict |
A dictionary containing census data. Defaults to None. It can be obtained from the get_census_dict() function. |
None |
Source code in leafmap/leafmap.py
def add_census_data(self, wms, layer, census_dict=None, **kwargs):
"""Adds a census data layer to the map.
Args:
wms (str): The wms to use. For example, "Current", "ACS 2021", "Census 2020". See the complete list at https://tigerweb.geo.census.gov/tigerwebmain/TIGERweb_wms.html
layer (str): The layer name to add to the map.
census_dict (dict, optional): A dictionary containing census data. Defaults to None. It can be obtained from the get_census_dict() function.
"""
try:
if census_dict is None:
census_dict = get_census_dict()
if wms not in census_dict.keys():
raise ValueError(
f"The provided WMS is invalid. It must be one of {census_dict.keys()}"
)
layers = census_dict[wms]["layers"]
if layer not in layers:
raise ValueError(
f"The layer name is not valid. It must be one of {layers}"
)
url = census_dict[wms]["url"]
if "name" not in kwargs:
kwargs["name"] = layer
if "attribution" not in kwargs:
kwargs["attribution"] = "U.S. Census Bureau"
if "format" not in kwargs:
kwargs["format"] = "image/png"
if "transparent" not in kwargs:
kwargs["transparent"] = True
self.add_wms_layer(url, layer, **kwargs)
except Exception as e:
raise Exception(e)
add_circle_markers_from_xy(self, data, x='lon', y='lat', radius=10, popup=None, font_size=2, stroke=True, color='#0033FF', weight=2, fill=True, fill_color=None, fill_opacity=0.2, opacity=1.0, layer_name='Circle Markers', **kwargs)
¶
Adds a marker cluster to the map. For a list of options, see https://ipyleaflet.readthedocs.io/en/latest/_modules/ipyleaflet/leaflet.html#Path
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
data |
str | pd.DataFrame |
A csv or Pandas DataFrame containing x, y, z values. |
required |
x |
str |
The column name for the x values. Defaults to "lon". |
'lon' |
y |
str |
The column name for the y values. Defaults to "lat". |
'lat' |
radius |
int |
The radius of the circle. Defaults to 10. |
10 |
popup |
list |
A list of column names to be used as the popup. Defaults to None. |
None |
font_size |
int |
The font size of the popup. Defaults to 2. |
2 |
stroke |
bool |
Whether to stroke the path. Defaults to True. |
True |
color |
str |
The color of the path. Defaults to "#0033FF". |
'#0033FF' |
weight |
int |
The weight of the path. Defaults to 2. |
2 |
fill |
bool |
Whether to fill the path with color. Defaults to True. |
True |
fill_color |
str |
The fill color of the path. Defaults to None. |
None |
fill_opacity |
float |
The fill opacity of the path. Defaults to 0.2. |
0.2 |
opacity |
float |
The opacity of the path. Defaults to 1.0. |
1.0 |
layer_name |
str |
The layer name to use for the marker cluster. Defaults to "Circle Markers". |
'Circle Markers' |
Source code in leafmap/leafmap.py
def add_circle_markers_from_xy(
self,
data,
x="lon",
y="lat",
radius=10,
popup=None,
font_size=2,
stroke=True,
color="#0033FF",
weight=2,
fill=True,
fill_color=None,
fill_opacity=0.2,
opacity=1.0,
layer_name="Circle Markers",
**kwargs,
):
"""Adds a marker cluster to the map. For a list of options, see https://ipyleaflet.readthedocs.io/en/latest/_modules/ipyleaflet/leaflet.html#Path
Args:
data (str | pd.DataFrame): A csv or Pandas DataFrame containing x, y, z values.
x (str, optional): The column name for the x values. Defaults to "lon".
y (str, optional): The column name for the y values. Defaults to "lat".
radius (int, optional): The radius of the circle. Defaults to 10.
popup (list, optional): A list of column names to be used as the popup. Defaults to None.
font_size (int, optional): The font size of the popup. Defaults to 2.
stroke (bool, optional): Whether to stroke the path. Defaults to True.
color (str, optional): The color of the path. Defaults to "#0033FF".
weight (int, optional): The weight of the path. Defaults to 2.
fill (bool, optional): Whether to fill the path with color. Defaults to True.
fill_color (str, optional): The fill color of the path. Defaults to None.
fill_opacity (float, optional): The fill opacity of the path. Defaults to 0.2.
opacity (float, optional): The opacity of the path. Defaults to 1.0.
layer_name (str, optional): The layer name to use for the marker cluster. Defaults to "Circle Markers".
"""
import pandas as pd
import geopandas as gpd
if isinstance(data, pd.DataFrame) or isinstance(data, gpd.GeoDataFrame):
df = data
elif not data.startswith("http") and (not os.path.exists(data)):
raise FileNotFoundError("The specified input csv does not exist.")
elif isinstance(data, str) and data.endswith(".csv"):
df = pd.read_csv(data)
else:
df = gpd.read_file(data)
col_names = df.columns.values.tolist()
if "geometry" in col_names:
col_names.remove("geometry")
if popup is None:
popup = col_names
if not isinstance(popup, list):
popup = [popup]
if x not in col_names:
if isinstance(df, gpd.GeoDataFrame):
df[x] = df.geometry.x
else:
raise ValueError(
f"x must be one of the following: {', '.join(col_names)}"
)
if y not in col_names:
if isinstance(df, gpd.GeoDataFrame):
df[y] = df.geometry.y
else:
raise ValueError(
f"y must be one of the following: {', '.join(col_names)}"
)
if fill_color is None:
fill_color = color
if isinstance(color, str):
colors = [color] * len(df)
elif isinstance(color, list):
colors = color
else:
raise ValueError("color must be either a string or a list.")
if isinstance(fill_color, str):
fill_colors = [fill_color] * len(df)
elif isinstance(fill_color, list):
fill_colors = fill_color
else:
raise ValueError("fill_color must be either a string or a list.")
if isinstance(radius, int):
radius = [radius] * len(df)
elif isinstance(radius, list):
radius = radius
else:
raise ValueError("radius must be either an integer or a list.")
index = 0
layers = []
for idx, row in df.iterrows():
html = ""
for p in popup:
html = (
html
+ f"<font size='{font_size}'><b>"
+ p
+ "</b>"
+ ": "
+ str(row[p])
+ "<br></font>"
)
popup_html = widgets.HTML(html)
marker = ipyleaflet.CircleMarker(
location=[row[y], row[x]],
radius=radius[index],
popup=popup_html,
stroke=stroke,
color=colors[index],
weight=weight,
fill=fill,
fill_color=fill_colors[index],
fill_opacity=fill_opacity,
opacity=opacity,
**kwargs,
)
layers.append(marker)
index += 1
group = ipyleaflet.LayerGroup(layers=tuple(layers), name=layer_name)
self.add(group)
add_cog_layer(self, url, name='Untitled', attribution='', opacity=1.0, shown=True, bands=None, titiler_endpoint=None, zoom_to_layer=True, **kwargs)
¶
Adds a COG TileLayer to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
url |
str |
The URL of the COG tile layer. |
required |
name |
str |
The layer name to use for the layer. Defaults to 'Untitled'. |
'Untitled' |
attribution |
str |
The attribution to use. Defaults to ''. |
'' |
opacity |
float |
The opacity of the layer. Defaults to 1. |
1.0 |
shown |
bool |
A flag indicating whether the layer should be on by default. Defaults to True. |
True |
bands |
list |
A list of bands to use for the layer. Defaults to None. |
None |
titiler_endpoint |
str |
Titiler endpoint. Defaults to "https://titiler.xyz". |
None |
zoom_to_layer |
bool |
Whether to zoom to the layer extent. Defaults to True. |
True |
**kwargs |
Arbitrary keyword arguments, including bidx, expression, nodata, unscale, resampling, rescale,
color_formula, colormap, colormap_name, return_mask. See https://developmentseed.org/titiler/endpoints/cog/
and https://cogeotiff.github.io/rio-tiler/colormap/. To select a certain bands, use bidx=[1, 2, 3].
apply a rescaling to multiple bands, use something like |
{} |
Source code in leafmap/leafmap.py
def add_cog_layer(
self,
url,
name="Untitled",
attribution="",
opacity=1.0,
shown=True,
bands=None,
titiler_endpoint=None,
zoom_to_layer=True,
**kwargs,
):
"""Adds a COG TileLayer to the map.
Args:
url (str): The URL of the COG tile layer.
name (str, optional): The layer name to use for the layer. Defaults to 'Untitled'.
attribution (str, optional): The attribution to use. Defaults to ''.
opacity (float, optional): The opacity of the layer. Defaults to 1.
shown (bool, optional): A flag indicating whether the layer should be on by default. Defaults to True.
bands (list, optional): A list of bands to use for the layer. Defaults to None.
titiler_endpoint (str, optional): Titiler endpoint. Defaults to "https://titiler.xyz".
zoom_to_layer (bool, optional): Whether to zoom to the layer extent. Defaults to True.
**kwargs: Arbitrary keyword arguments, including bidx, expression, nodata, unscale, resampling, rescale,
color_formula, colormap, colormap_name, return_mask. See https://developmentseed.org/titiler/endpoints/cog/
and https://cogeotiff.github.io/rio-tiler/colormap/. To select a certain bands, use bidx=[1, 2, 3].
apply a rescaling to multiple bands, use something like `rescale=["164,223","130,211","99,212"]`.
"""
tile_url = cog_tile(url, bands, titiler_endpoint, **kwargs)
bounds = cog_bounds(url, titiler_endpoint)
self.add_tile_layer(tile_url, name, attribution, opacity, shown)
if zoom_to_layer:
self.fit_bounds([[bounds[1], bounds[0]], [bounds[3], bounds[2]]])
arc_zoom_to_extent(bounds[0], bounds[1], bounds[2], bounds[3])
if not hasattr(self, "cog_layer_dict"):
self.cog_layer_dict = {}
params = {
"url": url,
"titizer_endpoint": titiler_endpoint,
"bounds": bounds,
"type": "COG",
}
self.cog_layer_dict[name] = params
add_colorbar(self, colors, vmin=0, vmax=1.0, index=None, caption='', categorical=False, step=None, height='45px', transparent_bg=False, position='bottomright', **kwargs)
¶
Add a branca colorbar to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
colors |
list |
The set of colors to be used for interpolation. Colors can be provided in the form: * tuples of RGBA ints between 0 and 255 (e.g: (255, 255, 0) or (255, 255, 0, 255)) * tuples of RGBA floats between 0. and 1. (e.g: (1.,1.,0.) or (1., 1., 0., 1.)) * HTML-like string (e.g: “#ffff00) * a color name or shortcut (e.g: “y” or “yellow”) |
required |
vmin |
int |
The minimal value for the colormap. Values lower than vmin will be bound directly to colors[0].. Defaults to 0. |
0 |
vmax |
float |
The maximal value for the colormap. Values higher than vmax will be bound directly to colors[-1]. Defaults to 1.0. |
1.0 |
index |
list |
The values corresponding to each color. It has to be sorted, and have the same length as colors. If None, a regular grid between vmin and vmax is created.. Defaults to None. |
None |
caption |
str |
The caption for the colormap. Defaults to "". |
'' |
categorical |
bool |
Whether or not to create a categorical colormap. Defaults to False. |
False |
step |
int |
The step to split the LinearColormap into a StepColormap. Defaults to None. |
None |
height |
str |
The height of the colormap widget. Defaults to "45px". |
'45px' |
transparent_bg |
bool |
Whether to use transparent background for the colormap widget. Defaults to True. |
False |
position |
str |
The position for the colormap widget. Defaults to "bottomright". |
'bottomright' |
Source code in leafmap/leafmap.py
def add_colorbar(
self,
colors,
vmin=0,
vmax=1.0,
index=None,
caption="",
categorical=False,
step=None,
height="45px",
transparent_bg=False,
position="bottomright",
**kwargs,
):
"""Add a branca colorbar to the map.
Args:
colors (list): The set of colors to be used for interpolation. Colors can be provided in the form: * tuples of RGBA ints between 0 and 255 (e.g: (255, 255, 0) or (255, 255, 0, 255)) * tuples of RGBA floats between 0. and 1. (e.g: (1.,1.,0.) or (1., 1., 0., 1.)) * HTML-like string (e.g: “#ffff00) * a color name or shortcut (e.g: “y” or “yellow”)
vmin (int, optional): The minimal value for the colormap. Values lower than vmin will be bound directly to colors[0].. Defaults to 0.
vmax (float, optional): The maximal value for the colormap. Values higher than vmax will be bound directly to colors[-1]. Defaults to 1.0.
index (list, optional):The values corresponding to each color. It has to be sorted, and have the same length as colors. If None, a regular grid between vmin and vmax is created.. Defaults to None.
caption (str, optional): The caption for the colormap. Defaults to "".
categorical (bool, optional): Whether or not to create a categorical colormap. Defaults to False.
step (int, optional): The step to split the LinearColormap into a StepColormap. Defaults to None.
height (str, optional): The height of the colormap widget. Defaults to "45px".
transparent_bg (bool, optional): Whether to use transparent background for the colormap widget. Defaults to True.
position (str, optional): The position for the colormap widget. Defaults to "bottomright".
"""
from box import Box
from branca.colormap import LinearColormap
output = widgets.Output()
output.layout.height = height
if "width" in kwargs.keys():
output.layout.width = kwargs["width"]
if isinstance(colors, Box):
try:
colors = list(colors["default"])
except Exception as e:
print("The provided color list is invalid.")
raise Exception(e)
if all(len(color) == 6 for color in colors):
colors = ["#" + color for color in colors]
colormap = LinearColormap(
colors=colors, index=index, vmin=vmin, vmax=vmax, caption=caption
)
if categorical:
if step is not None:
colormap = colormap.to_step(step)
elif index is not None:
colormap = colormap.to_step(len(index) - 1)
else:
colormap = colormap.to_step(3)
colormap_ctrl = ipyleaflet.WidgetControl(
widget=output,
position=position,
transparent_bg=transparent_bg,
**kwargs,
)
with output:
output.outputs = ()
display(colormap)
self.colorbar = colormap_ctrl
self.add(colormap_ctrl)
add_colormap(self, cmap='gray', colors=None, discrete=False, label=None, width=3, height=0.25, orientation='horizontal', vmin=0, vmax=1.0, axis_off=False, show_name=False, font_size=8, transparent_bg=False, position='bottomright', **kwargs)
¶
Adds a matplotlib colormap to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
cmap |
str |
Matplotlib colormap. Defaults to "gray". See https://matplotlib.org/3.3.4/tutorials/colors/colormaps.html#sphx-glr-tutorials-colors-colormaps-py for options. |
'gray' |
colors |
list |
A list of custom colors to create a colormap. Defaults to None. |
None |
discrete |
bool |
Whether to create a discrete colorbar. Defaults to False. |
False |
label |
str |
Label for the colorbar. Defaults to None. |
None |
width |
float |
The width of the colormap. Defaults to 8.0. |
3 |
height |
float |
The height of the colormap. Defaults to 0.4. |
0.25 |
orientation |
str |
The orientation of the colormap. Defaults to "horizontal". |
'horizontal' |
vmin |
float |
The minimum value range. Defaults to 0. |
0 |
vmax |
float |
The maximum value range. Defaults to 1.0. |
1.0 |
axis_off |
bool |
Whether to turn axis off. Defaults to False. |
False |
show_name |
bool |
Whether to show the colormap name. Defaults to False. |
False |
font_size |
int |
Font size of the text. Defaults to 12. |
8 |
transparent_bg |
bool |
Whether to use transparent background for the colormap widget. Defaults to True. |
False |
position |
str |
The position for the colormap widget. Defaults to "bottomright". |
'bottomright' |
Source code in leafmap/leafmap.py
def add_colormap(
self,
cmap="gray",
colors=None,
discrete=False,
label=None,
width=3,
height=0.25,
orientation="horizontal",
vmin=0,
vmax=1.0,
axis_off=False,
show_name=False,
font_size=8,
transparent_bg=False,
position="bottomright",
**kwargs,
):
"""Adds a matplotlib colormap to the map.
Args:
cmap (str, optional): Matplotlib colormap. Defaults to "gray". See https://matplotlib.org/3.3.4/tutorials/colors/colormaps.html#sphx-glr-tutorials-colors-colormaps-py for options.
colors (list, optional): A list of custom colors to create a colormap. Defaults to None.
discrete (bool, optional): Whether to create a discrete colorbar. Defaults to False.
label (str, optional): Label for the colorbar. Defaults to None.
width (float, optional): The width of the colormap. Defaults to 8.0.
height (float, optional): The height of the colormap. Defaults to 0.4.
orientation (str, optional): The orientation of the colormap. Defaults to "horizontal".
vmin (float, optional): The minimum value range. Defaults to 0.
vmax (float, optional): The maximum value range. Defaults to 1.0.
axis_off (bool, optional): Whether to turn axis off. Defaults to False.
show_name (bool, optional): Whether to show the colormap name. Defaults to False.
font_size (int, optional): Font size of the text. Defaults to 12.
transparent_bg (bool, optional): Whether to use transparent background for the colormap widget. Defaults to True.
position (str, optional): The position for the colormap widget. Defaults to "bottomright".
"""
from .colormaps import plot_colormap
output = widgets.Output()
colormap_ctrl = ipyleaflet.WidgetControl(
widget=output,
position=position,
transparent_bg=transparent_bg,
)
with output:
output.outputs = ()
plot_colormap(
cmap,
colors,
discrete,
label,
width,
height,
orientation,
vmin,
vmax,
axis_off,
show_name,
font_size,
**kwargs,
)
self.colorbar = colormap_ctrl
self.add(colormap_ctrl)
add_data(self, data, column, colors=None, labels=None, cmap=None, scheme='Quantiles', k=5, add_legend=True, legend_title=None, legend_position='bottomright', legend_kwds=None, classification_kwds=None, layer_name='Untitled', style=None, hover_style=None, style_callback=None, marker_radius=10, marker_args=None, info_mode='on_hover', encoding='utf-8', **kwargs)
¶
Add vector data to the map with a variety of classification schemes.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
data |
str | pd.DataFrame | gpd.GeoDataFrame |
The data to classify. It can be a filepath to a vector dataset, a pandas dataframe, or a geopandas geodataframe. |
required |
column |
str |
The column to classify. |
required |
cmap |
str |
The name of a colormap recognized by matplotlib. Defaults to None. |
None |
colors |
list |
A list of colors to use for the classification. Defaults to None. |
None |
labels |
list |
A list of labels to use for the legend. Defaults to None. |
None |
scheme |
str |
Name of a choropleth classification scheme (requires mapclassify). Name of a choropleth classification scheme (requires mapclassify). A mapclassify.MapClassifier object will be used under the hood. Supported are all schemes provided by mapclassify (e.g. 'BoxPlot', 'EqualInterval', 'FisherJenks', 'FisherJenksSampled', 'HeadTailBreaks', 'JenksCaspall', 'JenksCaspallForced', 'JenksCaspallSampled', 'MaxP', 'MaximumBreaks', 'NaturalBreaks', 'Quantiles', 'Percentiles', 'StdMean', 'UserDefined'). Arguments can be passed in classification_kwds. |
'Quantiles' |
k |
int |
Number of classes (ignored if scheme is None or if column is categorical). Default to 5. |
5 |
add_legend |
bool |
Whether to add a legend to the map. Defaults to True. |
True |
legend_title |
str |
The title of the legend. Defaults to None. |
None |
legend_position |
str |
The position of the legend. Can be 'topleft', 'topright', 'bottomleft', or 'bottomright'. Defaults to 'bottomright'. |
'bottomright' |
legend_kwds |
dict |
Keyword arguments to pass to :func: |
None |
classification_kwds |
dict |
Keyword arguments to pass to mapclassify. Defaults to None. |
None |
layer_name |
str |
The layer name to be used.. Defaults to "Untitled". |
'Untitled' |
style |
dict |
A dictionary specifying the style to be used. Defaults to None. style is a dictionary of the following form: style = { "stroke": False, "color": "#ff0000", "weight": 1, "opacity": 1, "fill": True, "fillColor": "#ffffff", "fillOpacity": 1.0, "dashArray": "9" "clickable": True, } |
None |
hover_style |
dict |
Hover style dictionary. Defaults to {}. hover_style is a dictionary of the following form: hover_style = {"weight": style["weight"] + 1, "fillOpacity": 0.5} |
None |
style_callback |
function |
Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None. style_callback is a function that takes the feature as argument and should return a dictionary of the following form: style_callback = lambda feat: {"fillColor": feat["properties"]["color"]} |
None |
info_mode |
str |
Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover". |
'on_hover' |
encoding |
str |
The encoding of the GeoJSON file. Defaults to "utf-8". |
'utf-8' |
**kwargs |
Additional keyword arguments to pass to the GeoJSON class, such as fields, which can be a list of column names to be included in the popup. |
{} |
Source code in leafmap/leafmap.py
def add_data(
self,
data,
column,
colors=None,
labels=None,
cmap=None,
scheme="Quantiles",
k=5,
add_legend=True,
legend_title=None,
legend_position="bottomright",
legend_kwds=None,
classification_kwds=None,
layer_name="Untitled",
style=None,
hover_style=None,
style_callback=None,
marker_radius=10,
marker_args=None,
info_mode="on_hover",
encoding="utf-8",
**kwargs,
):
"""Add vector data to the map with a variety of classification schemes.
Args:
data (str | pd.DataFrame | gpd.GeoDataFrame): The data to classify. It can be a filepath to a vector dataset, a pandas dataframe, or a geopandas geodataframe.
column (str): The column to classify.
cmap (str, optional): The name of a colormap recognized by matplotlib. Defaults to None.
colors (list, optional): A list of colors to use for the classification. Defaults to None.
labels (list, optional): A list of labels to use for the legend. Defaults to None.
scheme (str, optional): Name of a choropleth classification scheme (requires mapclassify).
Name of a choropleth classification scheme (requires mapclassify).
A mapclassify.MapClassifier object will be used
under the hood. Supported are all schemes provided by mapclassify (e.g.
'BoxPlot', 'EqualInterval', 'FisherJenks', 'FisherJenksSampled',
'HeadTailBreaks', 'JenksCaspall', 'JenksCaspallForced',
'JenksCaspallSampled', 'MaxP', 'MaximumBreaks',
'NaturalBreaks', 'Quantiles', 'Percentiles', 'StdMean',
'UserDefined'). Arguments can be passed in classification_kwds.
k (int, optional): Number of classes (ignored if scheme is None or if column is categorical). Default to 5.
add_legend (bool, optional): Whether to add a legend to the map. Defaults to True.
legend_title (str, optional): The title of the legend. Defaults to None.
legend_position (str, optional): The position of the legend. Can be 'topleft', 'topright', 'bottomleft', or 'bottomright'. Defaults to 'bottomright'.
legend_kwds (dict, optional): Keyword arguments to pass to :func:`matplotlib.pyplot.legend` or `matplotlib.pyplot.colorbar`. Defaults to None.
Keyword arguments to pass to :func:`matplotlib.pyplot.legend` or
Additional accepted keywords when `scheme` is specified:
fmt : string
A formatting specification for the bin edges of the classes in the
legend. For example, to have no decimals: ``{"fmt": "{:.0f}"}``.
labels : list-like
A list of legend labels to override the auto-generated labblels.
Needs to have the same number of elements as the number of
classes (`k`).
interval : boolean (default False)
An option to control brackets from mapclassify legend.
If True, open/closed interval brackets are shown in the legend.
classification_kwds (dict, optional): Keyword arguments to pass to mapclassify. Defaults to None.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to None.
style is a dictionary of the following form:
style = {
"stroke": False,
"color": "#ff0000",
"weight": 1,
"opacity": 1,
"fill": True,
"fillColor": "#ffffff",
"fillOpacity": 1.0,
"dashArray": "9"
"clickable": True,
}
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
hover_style is a dictionary of the following form:
hover_style = {"weight": style["weight"] + 1, "fillOpacity": 0.5}
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
style_callback is a function that takes the feature as argument and should return a dictionary of the following form:
style_callback = lambda feat: {"fillColor": feat["properties"]["color"]}
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
encoding (str, optional): The encoding of the GeoJSON file. Defaults to "utf-8".
**kwargs: Additional keyword arguments to pass to the GeoJSON class, such as fields, which can be a list of column names to be included in the popup.
"""
gdf, legend_dict = classify(
data=data,
column=column,
cmap=cmap,
colors=colors,
labels=labels,
scheme=scheme,
k=k,
legend_kwds=legend_kwds,
classification_kwds=classification_kwds,
)
if legend_title is None:
legend_title = column
if style is None:
style = {
# "stroke": False,
# "color": "#ff0000",
"weight": 1,
"opacity": 1,
# "fill": True,
# "fillColor": "#ffffff",
"fillOpacity": 1.0,
# "dashArray": "9"
# "clickable": True,
}
if colors is not None:
style["color"] = "#000000"
if hover_style is None:
hover_style = {"weight": style["weight"] + 1, "fillOpacity": 0.5}
if style_callback is None:
style_callback = lambda feat: {"fillColor": feat["properties"]["color"]}
if gdf.geometry.geom_type.unique().tolist()[0] == "Point":
columns = gdf.columns.tolist()
if "category" in columns:
columns.remove("category")
if "color" in columns:
columns.remove("color")
if marker_args is None:
marker_args = {}
if "fill_color" not in marker_args:
marker_args["fill_color"] = gdf["color"].tolist()
if "stroke" not in marker_args:
marker_args["stroke"] = False
if "fill_opacity" not in marker_args:
marker_args["fill_opacity"] = 0.8
marker_args["radius"] = marker_radius
self.add_markers(gdf[columns], layer_name=layer_name, **marker_args)
else:
self.add_gdf(
gdf,
layer_name=layer_name,
style=style,
hover_style=hover_style,
style_callback=style_callback,
info_mode=info_mode,
encoding=encoding,
**kwargs,
)
if add_legend:
self.add_legend(
title=legend_title, legend_dict=legend_dict, position=legend_position
)
add_ee_layer(self, asset_id, name=None, attribution='Google Earth Engine', shown=True, opacity=1.0, **kwargs)
¶
Adds a Google Earth Engine tile layer to the map based on the tile layer URL from https://github.com/opengeos/ee-tile-layers/blob/main/datasets.tsv.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
asset_id |
str |
The ID of the Earth Engine asset. |
required |
name |
str |
The name of the tile layer. If not provided, the asset ID will be used. Default is None. |
None |
attribution |
str |
The attribution text to be displayed. Default is "Google Earth Engine". |
'Google Earth Engine' |
shown |
bool |
Whether the tile layer should be shown on the map. Default is True. |
True |
opacity |
float |
The opacity of the tile layer. Default is 1.0. |
1.0 |
**kwargs |
Additional keyword arguments to be passed to the underlying |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/leafmap.py
def add_ee_layer(
self,
asset_id: str,
name: str = None,
attribution: str = "Google Earth Engine",
shown: bool = True,
opacity: float = 1.0,
**kwargs,
) -> None:
"""
Adds a Google Earth Engine tile layer to the map based on the tile layer URL from
https://github.com/opengeos/ee-tile-layers/blob/main/datasets.tsv.
Args:
asset_id (str): The ID of the Earth Engine asset.
name (str, optional): The name of the tile layer. If not provided, the asset ID will be used. Default is None.
attribution (str, optional): The attribution text to be displayed. Default is "Google Earth Engine".
shown (bool, optional): Whether the tile layer should be shown on the map. Default is True.
opacity (float, optional): The opacity of the tile layer. Default is 1.0.
**kwargs: Additional keyword arguments to be passed to the underlying `add_tile_layer` method.
Returns:
None
"""
import pandas as pd
df = pd.read_csv(
"https://raw.githubusercontent.com/opengeos/ee-tile-layers/main/datasets.tsv",
sep="\t",
)
asset_id = asset_id.strip()
if name is None:
name = asset_id
if asset_id in df["id"].values:
url = df.loc[df["id"] == asset_id, "url"].values[0]
self.add_tile_layer(
url,
name,
attribution=attribution,
shown=shown,
opacity=opacity,
**kwargs,
)
else:
print(f"The provided EE tile layer {asset_id} does not exist.")
add_gdf(self, gdf, layer_name='Untitled', style={}, hover_style={}, style_callback=None, fill_colors=['black'], info_mode='on_hover', zoom_to_layer=False, encoding='utf-8', **kwargs)
¶
Adds a GeoDataFrame to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
gdf |
GeoDataFrame |
A GeoPandas GeoDataFrame. |
required |
layer_name |
str |
The layer name to be used.. Defaults to "Untitled". |
'Untitled' |
style |
dict |
A dictionary specifying the style to be used. Defaults to {}. |
{} |
hover_style |
dict |
Hover style dictionary. Defaults to {}. |
{} |
style_callback |
function |
Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None. |
None |
fill_colors |
list |
The random colors to use for filling polygons. Defaults to ["black"]. |
['black'] |
info_mode |
str |
Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover". |
'on_hover' |
zoom_to_layer |
bool |
Whether to zoom to the layer. Defaults to False. |
False |
encoding |
str |
The encoding of the GeoDataFrame. Defaults to "utf-8". |
'utf-8' |
Source code in leafmap/leafmap.py
def add_gdf(
self,
gdf,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
zoom_to_layer=False,
encoding="utf-8",
**kwargs,
):
"""Adds a GeoDataFrame to the map.
Args:
gdf (GeoDataFrame): A GeoPandas GeoDataFrame.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
zoom_to_layer (bool, optional): Whether to zoom to the layer. Defaults to False.
encoding (str, optional): The encoding of the GeoDataFrame. Defaults to "utf-8".
"""
for col in gdf.columns:
try:
if gdf[col].dtype in ["datetime64[ns]", "datetime64[ns, UTC]"]:
gdf[col] = gdf[col].astype(str)
except:
pass
data = gdf_to_geojson(gdf, epsg="4326")
self.add_geojson(
data,
layer_name,
style,
hover_style,
style_callback,
fill_colors,
info_mode,
zoom_to_layer,
encoding,
**kwargs,
)
if zoom_to_layer:
import numpy as np
bounds = gdf.to_crs(epsg="4326").bounds
west = np.min(bounds["minx"])
south = np.min(bounds["miny"])
east = np.max(bounds["maxx"])
north = np.max(bounds["maxy"])
self.fit_bounds([[south, east], [north, west]])
add_gdf_from_postgis(self, sql, con, layer_name='Untitled', style={}, hover_style={}, style_callback=None, fill_colors=['black'], info_mode='on_hover', zoom_to_layer=True, **kwargs)
¶
Reads a PostGIS database and returns data as a GeoDataFrame to be added to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
sql |
str |
SQL query to execute in selecting entries from database, or name of the table to read from the database. |
required |
con |
sqlalchemy.engine.Engine |
Active connection to the database to query. |
required |
layer_name |
str |
The layer name to be used.. Defaults to "Untitled". |
'Untitled' |
style |
dict |
A dictionary specifying the style to be used. Defaults to {}. |
{} |
hover_style |
dict |
Hover style dictionary. Defaults to {}. |
{} |
style_callback |
function |
Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None. |
None |
fill_colors |
list |
The random colors to use for filling polygons. Defaults to ["black"]. |
['black'] |
info_mode |
str |
Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover". |
'on_hover' |
zoom_to_layer |
bool |
Whether to zoom to the layer. |
True |
Source code in leafmap/leafmap.py
def add_gdf_from_postgis(
self,
sql,
con,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
zoom_to_layer=True,
**kwargs,
):
"""Reads a PostGIS database and returns data as a GeoDataFrame to be added to the map.
Args:
sql (str): SQL query to execute in selecting entries from database, or name of the table to read from the database.
con (sqlalchemy.engine.Engine): Active connection to the database to query.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
zoom_to_layer (bool, optional): Whether to zoom to the layer.
"""
gdf = read_postgis(sql, con, **kwargs)
gdf = gdf.to_crs("epsg:4326")
self.add_gdf(
gdf,
layer_name,
style,
hover_style,
style_callback,
fill_colors,
info_mode,
zoom_to_layer,
)
add_geojson(self, in_geojson, layer_name='Untitled', style={}, hover_style={}, style_callback=None, fill_colors=['black'], info_mode='on_hover', zoom_to_layer=False, encoding='utf-8', **kwargs)
¶
Adds a GeoJSON file to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
in_geojson |
str | dict |
The file path or http URL to the input GeoJSON or a dictionary containing the geojson. |
required |
layer_name |
str |
The layer name to be used.. Defaults to "Untitled". |
'Untitled' |
style |
dict |
A dictionary specifying the style to be used. Defaults to {}. |
{} |
hover_style |
dict |
Hover style dictionary. Defaults to {}. |
{} |
style_callback |
function |
Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None. |
None |
fill_colors |
list |
The random colors to use for filling polygons. Defaults to ["black"]. |
['black'] |
info_mode |
str |
Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover". |
'on_hover' |
zoom_to_layer |
bool |
Whether to zoom to the layer after adding it to the map. Defaults to False. |
False |
encoding |
str |
The encoding of the GeoJSON file. Defaults to "utf-8". |
'utf-8' |
Exceptions:
| Type | Description |
|---|---|
FileNotFoundError |
The provided GeoJSON file could not be found. |
Source code in leafmap/leafmap.py
def add_geojson(
self,
in_geojson,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
zoom_to_layer=False,
encoding="utf-8",
**kwargs,
):
"""Adds a GeoJSON file to the map.
Args:
in_geojson (str | dict): The file path or http URL to the input GeoJSON or a dictionary containing the geojson.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
zoom_to_layer (bool, optional): Whether to zoom to the layer after adding it to the map. Defaults to False.
encoding (str, optional): The encoding of the GeoJSON file. Defaults to "utf-8".
Raises:
FileNotFoundError: The provided GeoJSON file could not be found.
"""
import json
import random
import requests
style_callback_only = False
if len(style) == 0 and style_callback is not None:
style_callback_only = True
try:
if isinstance(in_geojson, str):
if in_geojson.startswith("http"):
if is_jupyterlite():
import pyodide
output = os.path.basename(in_geojson)
output = os.path.abspath(output)
obj = pyodide.http.open_url(in_geojson)
with open(output, "w") as fd:
shutil.copyfileobj(obj, fd)
with open(output, "r") as fd:
data = json.load(fd)
else:
in_geojson = github_raw_url(in_geojson)
data = requests.get(in_geojson).json()
else:
in_geojson = os.path.abspath(in_geojson)
if not os.path.exists(in_geojson):
raise FileNotFoundError(
"The provided GeoJSON file could not be found."
)
with open(in_geojson, encoding=encoding) as f:
data = json.load(f)
elif isinstance(in_geojson, dict):
data = in_geojson
else:
raise TypeError("The input geojson must be a type of str or dict.")
except Exception as e:
raise Exception(e)
geom_type = get_geometry_type(data)
if not style:
style = {
# "stroke": True,
"color": "#3388ff",
"weight": 2,
"opacity": 1,
"fill": True,
"fillColor": "#3388ff",
"fillOpacity": 0.2,
# "dashArray": "9"
# "clickable": True,
}
if geom_type in ["LineString", "MultiLineString"]:
style["fill"] = False
elif "weight" not in style:
style["weight"] = 1
if not hover_style:
hover_style = {"weight": style["weight"] + 2, "fillOpacity": 0}
def random_color(feature):
return {
"color": "black",
"fillColor": random.choice(fill_colors),
}
toolbar_button = widgets.ToggleButton(
value=True,
tooltip="Toolbar",
icon="info",
layout=widgets.Layout(
width="28px", height="28px", padding="0px 0px 0px 4px"
),
)
close_button = widgets.ToggleButton(
value=False,
tooltip="Close the tool",
icon="times",
# button_style="primary",
layout=widgets.Layout(
height="28px", width="28px", padding="0px 0px 0px 4px"
),
)
html = widgets.HTML()
html.layout.margin = "0px 10px 0px 10px"
html.layout.max_height = "250px"
html.layout.max_width = "250px"
output_widget = widgets.VBox(
[widgets.HBox([toolbar_button, close_button]), html]
)
info_control = ipyleaflet.WidgetControl(
widget=output_widget, position="bottomright"
)
if info_mode in ["on_hover", "on_click"]:
self.add(info_control)
def toolbar_btn_click(change):
if change["new"]:
close_button.value = False
output_widget.children = [
widgets.VBox([widgets.HBox([toolbar_button, close_button]), html])
]
else:
output_widget.children = [widgets.HBox([toolbar_button, close_button])]
toolbar_button.observe(toolbar_btn_click, "value")
def close_btn_click(change):
if change["new"]:
toolbar_button.value = False
if info_control in self.controls:
self.remove_control(info_control)
output_widget.close()
close_button.observe(close_btn_click, "value")
if "fields" in kwargs:
fields = kwargs["fields"]
kwargs.pop("fields")
else:
fields = None
def update_html(feature, fields=fields, **kwargs):
if fields is None:
fields = list(feature["properties"].keys())
if "style" in fields:
fields.remove("style")
value = [
"<b>{}: </b>{}<br>".format(prop, feature["properties"][prop])
for prop in fields
]
value = """{}""".format("".join(value))
html.value = value
if style_callback is None:
style_callback = random_color
if style_callback_only:
geojson = ipyleaflet.GeoJSON(
data=data,
hover_style=hover_style,
style_callback=style_callback,
name=layer_name,
)
else:
geojson = ipyleaflet.GeoJSON(
data=data,
style=style,
hover_style=hover_style,
style_callback=style_callback,
name=layer_name,
)
if info_mode == "on_hover":
geojson.on_hover(update_html)
elif info_mode == "on_click":
geojson.on_click(update_html)
self.add(geojson)
self.geojson_layers.append(geojson)
if not hasattr(self, "json_layer_dict"):
self.json_layer_dict = {}
params = {
"data": geojson,
"style": style,
"hover_style": hover_style,
"style_callback": style_callback,
}
self.json_layer_dict[layer_name] = params
if zoom_to_layer:
try:
import numpy as np
import geopandas as gpd
gdf = gpd.GeoDataFrame.from_features(data)
if gdf.crs is None:
gdf.crs = "EPSG:4326"
bounds = gdf.to_crs(epsg="4326").bounds
west = np.min(bounds["minx"])
south = np.min(bounds["miny"])
east = np.max(bounds["maxx"])
north = np.max(bounds["maxy"])
self.fit_bounds([[south, east], [north, west]])
except Exception as e:
print(e)
add_gui(self, name, position='topright', opened=True, show_close_button=True, **kwargs)
¶
Add a GUI to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
name |
str |
The name of the GUI. Options include "layer_manager", "inspector", "plot", and "timelapse". |
required |
position |
str |
The position of the GUI. Defaults to "topright". |
'topright' |
opened |
bool |
Whether the GUI is opened. Defaults to True. |
True |
show_close_button |
bool |
Whether to show the close button. Defaults to True. |
True |
Source code in leafmap/leafmap.py
def add_gui(
self, name, position="topright", opened=True, show_close_button=True, **kwargs
):
"""Add a GUI to the map.
Args:
name (str): The name of the GUI. Options include "layer_manager", "inspector", "plot", and "timelapse".
position (str, optional): The position of the GUI. Defaults to "topright".
opened (bool, optional): Whether the GUI is opened. Defaults to True.
show_close_button (bool, optional): Whether to show the close button. Defaults to True.
"""
name = name.lower()
if name == "stac":
self.add_stac_gui(position=position, opened=opened, **kwargs)
elif name == "basemap":
self.add_basemap_gui(position=position, **kwargs)
elif name == "inspector":
self.add_inspector_gui(position=position, opened=opened, **kwargs)
elif name == "layer_manager":
self.add_layer_manager(position=position, opened=opened, **kwargs)
elif name == "oam":
self.add_oam_gui(position=position, opened=opened, **kwargs)
add_heatmap(self, data, latitude='latitude', longitude='longitude', value='value', name='Heat map', radius=25, **kwargs)
¶
Adds a heat map to the map. Reference: https://ipyleaflet.readthedocs.io/en/latest/api_reference/heatmap.html
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
data |
str | list | pd.DataFrame |
File path or HTTP URL to the input file or a list of data points in the format of [[x1, y1, z1], [x2, y2, z2]]. For example, https://raw.githubusercontent.com/opengeos/leafmap/master/examples/data/world_cities.csv |
required |
latitude |
str |
The column name of latitude. Defaults to "latitude". |
'latitude' |
longitude |
str |
The column name of longitude. Defaults to "longitude". |
'longitude' |
value |
str |
The column name of values. Defaults to "value". |
'value' |
name |
str |
Layer name to use. Defaults to "Heat map". |
'Heat map' |
radius |
int |
Radius of each “point” of the heatmap. Defaults to 25. |
25 |
Exceptions:
| Type | Description |
|---|---|
ValueError |
If data is not a list. |
Source code in leafmap/leafmap.py
def add_heatmap(
self,
data,
latitude="latitude",
longitude="longitude",
value="value",
name="Heat map",
radius=25,
**kwargs,
):
"""Adds a heat map to the map. Reference: https://ipyleaflet.readthedocs.io/en/latest/api_reference/heatmap.html
Args:
data (str | list | pd.DataFrame): File path or HTTP URL to the input file or a list of data points in the format of [[x1, y1, z1], [x2, y2, z2]]. For example, https://raw.githubusercontent.com/opengeos/leafmap/master/examples/data/world_cities.csv
latitude (str, optional): The column name of latitude. Defaults to "latitude".
longitude (str, optional): The column name of longitude. Defaults to "longitude".
value (str, optional): The column name of values. Defaults to "value".
name (str, optional): Layer name to use. Defaults to "Heat map".
radius (int, optional): Radius of each “point” of the heatmap. Defaults to 25.
Raises:
ValueError: If data is not a list.
"""
import pandas as pd
from ipyleaflet import Heatmap
try:
if isinstance(data, str):
df = pd.read_csv(data)
data = df[[latitude, longitude, value]].values.tolist()
elif isinstance(data, pd.DataFrame):
data = data[[latitude, longitude, value]].values.tolist()
elif isinstance(data, list):
pass
else:
raise ValueError("data must be a list, a DataFrame, or a file path.")
heatmap = Heatmap(locations=data, radius=radius, name=name, **kwargs)
self.add(heatmap)
except Exception as e:
raise Exception(e)
add_html(self, html, position='bottomright', **kwargs)
¶
Add HTML to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
html |
str |
The HTML to add. |
required |
position |
str |
The position of the HTML, can be one of "topleft", "topright", "bottomleft", "bottomright". Defaults to "bottomright". |
'bottomright' |
Source code in leafmap/leafmap.py
def add_html(self, html, position="bottomright", **kwargs):
"""Add HTML to the map.
Args:
html (str): The HTML to add.
position (str, optional): The position of the HTML, can be one of "topleft",
"topright", "bottomleft", "bottomright". Defaults to "bottomright".
"""
# Check if an HTML string contains local images and convert them to base64.
html = check_html_string(html)
self.add_widget(html, position=position, **kwargs)
add_image(self, image, position='bottomright', **kwargs)
¶
Add an image to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
image |
str | ipywidgets.Image |
The image to add. |
required |
position |
str |
The position of the image, can be one of "topleft", "topright", "bottomleft", "bottomright". Defaults to "bottomright". |
'bottomright' |
Source code in leafmap/leafmap.py
def add_image(self, image, position="bottomright", **kwargs):
"""Add an image to the map.
Args:
image (str | ipywidgets.Image): The image to add.
position (str, optional): The position of the image, can be one of "topleft",
"topright", "bottomleft", "bottomright". Defaults to "bottomright".
"""
if isinstance(image, str):
if image.startswith("http"):
image = widgets.Image(value=requests.get(image).content, **kwargs)
elif os.path.exists(image):
with open(image, "rb") as f:
image = widgets.Image(value=f.read(), **kwargs)
elif isinstance(image, widgets.Image):
pass
else:
raise Exception("Invalid image")
self.add_widget(image, position=position)
add_inspector_gui(self, position='topright', opened=True)
¶
Add the Inspector widget to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
position |
str |
The position of the widget. Defaults to "topright". |
'topright' |
opened |
bool |
Whether the widget is open. Defaults to True. |
True |
Source code in leafmap/leafmap.py
def add_inspector_gui(self, position="topright", opened=True):
"""Add the Inspector widget to the map.
Args:
position (str, optional): The position of the widget. Defaults to "topright".
opened (bool, optional): Whether the widget is open. Defaults to True.
"""
from .toolbar import inspector_gui
inspector_gui(self, position, opened)
add_kml(self, in_kml, layer_name='Untitled', style={}, hover_style={}, style_callback=None, fill_colors=['black'], info_mode='on_hover')
¶
Adds a KML file to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
in_kml |
str |
The input file path or HTTP URL to the KML. |
required |
layer_name |
str |
The layer name to be used.. Defaults to "Untitled". |
'Untitled' |
style |
dict |
A dictionary specifying the style to be used. Defaults to {}. |
{} |
hover_style |
dict |
Hover style dictionary. Defaults to {}. |
{} |
style_callback |
function |
Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None. |
None |
fill_colors |
list |
The random colors to use for filling polygons. Defaults to ["black"]. |
['black'] |
info_mode |
str |
Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover". |
'on_hover' |
Exceptions:
| Type | Description |
|---|---|
FileNotFoundError |
The provided KML file could not be found. |
Source code in leafmap/leafmap.py
def add_kml(
self,
in_kml,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
):
"""Adds a KML file to the map.
Args:
in_kml (str): The input file path or HTTP URL to the KML.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].
info_mode (str, optional): Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover".
Raises:
FileNotFoundError: The provided KML file could not be found.
"""
if in_kml.startswith("http") and in_kml.endswith(".kml"):
out_dir = os.path.abspath("./cache")
if not os.path.exists(out_dir):
os.makedirs(out_dir)
in_kml = download_file(in_kml)
if not os.path.exists(in_kml):
raise FileNotFoundError("The downloaded kml file could not be found.")
else:
in_kml = os.path.abspath(in_kml)
if not os.path.exists(in_kml):
raise FileNotFoundError("The provided KML could not be found.")
self.add_vector(
in_kml,
layer_name,
style=style,
hover_style=hover_style,
style_callback=style_callback,
fill_colors=fill_colors,
info_mode=info_mode,
)
add_labels(self, data, column, font_size='12pt', font_color='black', font_family='arial', font_weight='normal', x='longitude', y='latitude', draggable=True, layer_name='Labels', **kwargs)
¶
Adds a label layer to the map. Reference: https://ipyleaflet.readthedocs.io/en/latest/api_reference/divicon.html
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
data |
pd.DataFrame | gpd.GeoDataFrame | str |
The input data to label. |
required |
column |
str |
The column name of the data to label. |
required |
font_size |
str |
The font size of the labels. Defaults to "12pt". |
'12pt' |
font_color |
str |
The font color of the labels. Defaults to "black". |
'black' |
font_family |
str |
The font family of the labels. Defaults to "arial". |
'arial' |
font_weight |
str |
The font weight of the labels, can be normal, bold. Defaults to "normal". |
'normal' |
x |
str |
The column name of the longitude. Defaults to "longitude". |
'longitude' |
y |
str |
The column name of the latitude. Defaults to "latitude". |
'latitude' |
draggable |
bool |
Whether the labels are draggable. Defaults to True. |
True |
layer_name |
str |
Layer name to use. Defaults to "Labels". |
'Labels' |
Source code in leafmap/leafmap.py
def add_labels(
self,
data,
column,
font_size="12pt",
font_color="black",
font_family="arial",
font_weight="normal",
x="longitude",
y="latitude",
draggable=True,
layer_name="Labels",
**kwargs,
):
"""Adds a label layer to the map. Reference: https://ipyleaflet.readthedocs.io/en/latest/api_reference/divicon.html
Args:
data (pd.DataFrame | gpd.GeoDataFrame | str): The input data to label.
column (str): The column name of the data to label.
font_size (str, optional): The font size of the labels. Defaults to "12pt".
font_color (str, optional): The font color of the labels. Defaults to "black".
font_family (str, optional): The font family of the labels. Defaults to "arial".
font_weight (str, optional): The font weight of the labels, can be normal, bold. Defaults to "normal".
x (str, optional): The column name of the longitude. Defaults to "longitude".
y (str, optional): The column name of the latitude. Defaults to "latitude".
draggable (bool, optional): Whether the labels are draggable. Defaults to True.
layer_name (str, optional): Layer name to use. Defaults to "Labels".
"""
import warnings
import pandas as pd
warnings.filterwarnings("ignore")
if isinstance(data, pd.DataFrame):
df = data
if "geometry" in data.columns or ("geom" in data.columns):
df[x] = df.centroid.x
df[y] = df.centroid.y
elif isinstance(data, str):
ext = os.path.splitext(data)[1]
if ext == ".csv":
df = pd.read_csv(data)
elif ext in [".geojson", ".json", ".shp", ".gpkg"]:
try:
import geopandas as gpd
df = gpd.read_file(data)
df[x] = df.centroid.x
df[y] = df.centroid.y
except Exception as _:
print("geopandas is required to read geojson.")
return
else:
raise ValueError(
"data must be a pd.DataFrame, gpd.GeoDataFrame, or an ee.FeatureCollection."
)
if column not in df.columns:
raise ValueError(f"column must be one of {', '.join(df.columns)}.")
if x not in df.columns:
raise ValueError(f"column must be one of {', '.join(df.columns)}.")
if y not in df.columns:
raise ValueError(f"column must be one of {', '.join(df.columns)}.")
try:
size = int(font_size.replace("pt", ""))
except:
raise ValueError("font_size must be something like '10pt'")
labels = []
for index in df.index:
html = f'<div style="font-size: {font_size};color:{font_color};font-family:{font_family};font-weight: {font_weight}">{df[column][index]}</div>'
marker = ipyleaflet.Marker(
location=[df[y][index], df[x][index]],
icon=ipyleaflet.DivIcon(
icon_size=(1, 1),
icon_anchor=(size, size),
html=html,
**kwargs,
),
draggable=draggable,
)
labels.append(marker)
layer_group = ipyleaflet.LayerGroup(layers=labels, name=layer_name)
self.add(layer_group)
self.labels = layer_group
add_layer(self, layer)
¶
Adds a layer to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
layer |
ipyleaflet layer |
The layer to be added. |
required |
Source code in leafmap/leafmap.py
def add_layer(self, layer):
"""Adds a layer to the map.
Args:
layer (ipyleaflet layer): The layer to be added.
"""
existing_layer = self.find_layer(layer.name)
if existing_layer is not None:
self.remove_layer(existing_layer)
super().add(layer)
add_layer_control(self, position='topright')
¶
Adds a layer control to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
position |
str |
The position of the layer control. Defaults to 'topright'. |
'topright' |
Source code in leafmap/leafmap.py
def add_layer_control(self, position="topright"):
"""Adds a layer control to the map.
Args:
position (str, optional): The position of the layer control. Defaults to 'topright'.
"""
self.add(ipyleaflet.LayersControl(position=position))
add_layer_manager(self, position='topright', opened=True)
¶
Add the Layer Manager to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
position |
str |
The position of the Layer Manager. Defaults to "topright". |
'topright' |
Source code in leafmap/leafmap.py
def add_layer_manager(self, position="topright", opened=True):
"""Add the Layer Manager to the map.
Args:
position (str, optional): The position of the Layer Manager. Defaults to "topright".
"""
from .toolbar import layer_manager_gui
layer_manager_gui(self, position, opened)
add_legend(self, title='Legend', legend_dict=None, labels=None, colors=None, position='bottomright', builtin_legend=None, layer_name=None, **kwargs)
¶
Adds a customized basemap to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
title |
str |
Title of the legend. Defaults to 'Legend'. |
'Legend' |
legend_dict |
dict |
A dictionary containing legend items as keys and color as values. If provided, legend_keys and legend_colors will be ignored. Defaults to None. |
None |
labels |
list |
A list of legend keys. Defaults to None. |
None |
colors |
list |
A list of legend colors. Defaults to None. |
None |
position |
str |
Position of the legend. Defaults to 'bottomright'. |
'bottomright' |
builtin_legend |
str |
Name of the builtin legend to add to the map. Defaults to None. |
None |
layer_name |
str |
Layer name of the legend to be associated with. Defaults to None. |
None |
Source code in leafmap/leafmap.py
def add_legend(
self,
title="Legend",
legend_dict=None,
labels=None,
colors=None,
position="bottomright",
builtin_legend=None,
layer_name=None,
**kwargs,
):
"""Adds a customized basemap to the map.
Args:
title (str, optional): Title of the legend. Defaults to 'Legend'.
legend_dict (dict, optional): A dictionary containing legend items as keys and color as values. If provided, legend_keys and legend_colors will be ignored. Defaults to None.
labels (list, optional): A list of legend keys. Defaults to None.
colors (list, optional): A list of legend colors. Defaults to None.
position (str, optional): Position of the legend. Defaults to 'bottomright'.
builtin_legend (str, optional): Name of the builtin legend to add to the map. Defaults to None.
layer_name (str, optional): Layer name of the legend to be associated with. Defaults to None.
"""
import pkg_resources
from IPython.display import display
pkg_dir = os.path.dirname(
pkg_resources.resource_filename("leafmap", "leafmap.py")
)
legend_template = os.path.join(pkg_dir, "data/template/legend.html")
if "min_width" not in kwargs.keys():
min_width = None
if "max_width" not in kwargs.keys():
max_width = None
else:
max_width = kwargs["max_width"]
if "min_height" not in kwargs.keys():
min_height = None
else:
min_height = kwargs["min_height"]
if "max_height" not in kwargs.keys():
max_height = None
else:
max_height = kwargs["max_height"]
if "height" not in kwargs.keys():
height = None
else:
height = kwargs["height"]
if "width" not in kwargs.keys():
width = None
else:
width = kwargs["width"]
if width is None:
max_width = "300px"
if height is None:
max_height = "400px"
if not os.path.exists(legend_template):
print("The legend template does not exist.")
return
if labels is not None:
if not isinstance(labels, list):
print("The legend keys must be a list.")
return
else:
labels = ["One", "Two", "Three", "Four", "etc"]
if colors is not None:
if not isinstance(colors, list):
print("The legend colors must be a list.")
return
elif all(isinstance(item, tuple) for item in colors):
try:
colors = [rgb_to_hex(x) for x in colors]
except Exception as e:
print(e)
elif all((item.startswith("#") and len(item) == 7) for item in colors):
pass
elif all((len(item) == 6) for item in colors):
pass
else:
print("The legend colors must be a list of tuples.")
return
else:
colors = [
"#8DD3C7",
"#FFFFB3",
"#BEBADA",
"#FB8072",
"#80B1D3",
]
if len(labels) != len(colors):
print("The legend keys and values must be the same length.")
return
allowed_builtin_legends = builtin_legends.keys()
if builtin_legend is not None:
if builtin_legend not in allowed_builtin_legends:
print(
"The builtin legend must be one of the following: {}".format(
", ".join(allowed_builtin_legends)
)
)
return
else:
legend_dict = builtin_legends[builtin_legend]
labels = list(legend_dict.keys())
colors = list(legend_dict.values())
if legend_dict is not None:
if not isinstance(legend_dict, dict):
print("The legend dict must be a dictionary.")
return
else:
labels = list(legend_dict.keys())
colors = list(legend_dict.values())
if all(isinstance(item, tuple) for item in colors):
try:
colors = [rgb_to_hex(x) for x in colors]
except Exception as e:
print(e)
allowed_positions = [
"topleft",
"topright",
"bottomleft",
"bottomright",
]
if position not in allowed_positions:
print(
"The position must be one of the following: {}".format(
", ".join(allowed_positions)
)
)
return
header = []
content = []
footer = []
with open(legend_template) as f:
lines = f.readlines()
lines[3] = lines[3].replace("Legend", title)
header = lines[:6]
footer = lines[11:]
for index, key in enumerate(labels):
color = colors[index]
if not color.startswith("#"):
color = "#" + color
item = " <li><span style='background:{};'></span>{}</li>\n".format(
color, key
)
content.append(item)
legend_html = header + content + footer
legend_text = "".join(legend_html)
try:
legend_output_widget = widgets.Output(
layout={
# "border": "1px solid black",
"max_width": max_width,
"min_width": min_width,
"max_height": max_height,
"min_height": min_height,
"height": height,
"width": width,
"overflow": "scroll",
}
)
legend_control = ipyleaflet.WidgetControl(
widget=legend_output_widget, position=position
)
legend_widget = widgets.HTML(value=legend_text)
with legend_output_widget:
display(legend_widget)
self.legend_widget = legend_output_widget
self.legend_control = legend_control
self.add(legend_control)
except Exception as e:
raise Exception(e)
add_local_tile(self, source, band=None, palette=None, vmin=None, vmax=None, nodata=None, attribution=None, layer_name='Local COG', zoom_to_layer=True, visible=True, **kwargs)
¶
Add a local raster dataset to the map.
If you are using this function in JupyterHub on a remote server (e.g., Binder, Microsoft Planetary Computer) and
if the raster does not render properly, try installing jupyter-server-proxy using pip install jupyter-server-proxy,
then running the following code before calling this function. For more info, see https://bit.ly/3JbmF93.
1 2 | |
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
source |
str |
The path to the GeoTIFF file or the URL of the Cloud Optimized GeoTIFF. |
required |
band |
int |
The band to use. Band indexing starts at 1. Defaults to None. |
None |
palette |
str |
The name of the color palette from |
None |
vmin |
float |
The minimum value to use when colormapping the palette when plotting a single band. Defaults to None. |
None |
vmax |
float |
The maximum value to use when colormapping the palette when plotting a single band. Defaults to None. |
None |
nodata |
float |
The value from the band to use to interpret as not valid data. Defaults to None. |
None |
attribution |
str |
Attribution for the source raster. This defaults to a message about it being a local file.. Defaults to None. |
None |
layer_name |
str |
The layer name to use. Defaults to 'Local COG'. |
'Local COG' |
zoom_to_layer |
bool |
Whether to zoom to the extent of the layer. Defaults to True. |
True |
visible |
bool |
Whether the layer is visible. Defaults to True. |
True |
Source code in leafmap/leafmap.py
def add_raster(
self,
source,
band=None,
palette=None,
vmin=None,
vmax=None,
nodata=None,
attribution=None,
layer_name="Local COG",
zoom_to_layer=True,
visible=True,
**kwargs,
):
"""Add a local raster dataset to the map.
If you are using this function in JupyterHub on a remote server (e.g., Binder, Microsoft Planetary Computer) and
if the raster does not render properly, try installing jupyter-server-proxy using `pip install jupyter-server-proxy`,
then running the following code before calling this function. For more info, see https://bit.ly/3JbmF93.
import os
os.environ['LOCALTILESERVER_CLIENT_PREFIX'] = 'proxy/{port}'
Args:
source (str): The path to the GeoTIFF file or the URL of the Cloud Optimized GeoTIFF.
band (int, optional): The band to use. Band indexing starts at 1. Defaults to None.
palette (str, optional): The name of the color palette from `palettable` to use when plotting a single band. See https://jiffyclub.github.io/palettable. Default is greyscale
vmin (float, optional): The minimum value to use when colormapping the palette when plotting a single band. Defaults to None.
vmax (float, optional): The maximum value to use when colormapping the palette when plotting a single band. Defaults to None.
nodata (float, optional): The value from the band to use to interpret as not valid data. Defaults to None.
attribution (str, optional): Attribution for the source raster. This defaults to a message about it being a local file.. Defaults to None.
layer_name (str, optional): The layer name to use. Defaults to 'Local COG'.
zoom_to_layer (bool, optional): Whether to zoom to the extent of the layer. Defaults to True.
visible (bool, optional): Whether the layer is visible. Defaults to True.
"""
tile_layer, tile_client = get_local_tile_layer(
source,
band=band,
palette=palette,
vmin=vmin,
vmax=vmax,
nodata=nodata,
attribution=attribution,
layer_name=layer_name,
return_client=True,
**kwargs,
)
tile_layer.visible = visible
self.add(tile_layer)
bounds = tile_client.bounds() # [ymin, ymax, xmin, xmax]
bounds = (
bounds[2],
bounds[0],
bounds[3],
bounds[1],
) # [minx, miny, maxx, maxy]
if zoom_to_layer:
self.zoom_to_bounds(bounds)
arc_add_layer(tile_layer.url, layer_name, True, 1.0)
if zoom_to_layer:
arc_zoom_to_extent(bounds[0], bounds[1], bounds[2], bounds[3])
if not hasattr(self, "cog_layer_dict"):
self.cog_layer_dict = {}
band_names = list(tile_client.metadata()["bands"].keys())
params = {
"tile_layer": tile_layer,
"tile_client": tile_client,
"band": band,
"band_names": band_names,
"bounds": bounds,
"type": "LOCAL",
}
self.cog_layer_dict[layer_name] = params
add_marker(self, location, **kwargs)
¶
Adds a marker to the map. More info about marker at https://ipyleaflet.readthedocs.io/en/latest/api_reference/marker.html.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
location |
list | tuple |
The location of the marker in the format of [lat, lng]. |
required |
**kwargs |
Keyword arguments for the marker. |
{} |
Source code in leafmap/leafmap.py
def add_marker(self, location, **kwargs):
"""Adds a marker to the map. More info about marker at https://ipyleaflet.readthedocs.io/en/latest/api_reference/marker.html.
Args:
location (list | tuple): The location of the marker in the format of [lat, lng].
**kwargs: Keyword arguments for the marker.
"""
if isinstance(location, list):
location = tuple(location)
if isinstance(location, tuple):
marker = ipyleaflet.Marker(location=location, **kwargs)
self.add(marker)
else:
raise TypeError("The location must be a list or a tuple.")
add_marker_cluster(self, data, x='longitude', y='latitude', popup=None, layer_name='Marker Cluster', color_column=None, marker_colors=None, icon_colors=['white'], icon_names=['info'], spin=False, add_legend=True, max_cluster_radius=80, **kwargs)
¶
Adds a marker cluster to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
data |
str | pd.DataFrame |
A csv or Pandas DataFrame containing x, y, z values. |
required |
x |
str |
The column name for the x values. Defaults to "longitude". |
'longitude' |
y |
str |
The column name for the y values. Defaults to "latitude". |
'latitude' |
popup |
list |
A list of column names to be used as the popup. Defaults to None. |
None |
layer_name |
str |
The name of the layer. Defaults to "Marker Cluster". |
'Marker Cluster' |
color_column |
str |
The column name for the color values. Defaults to None. |
None |
marker_colors |
list |
A list of colors to be used for the markers. Defaults to None. |
None |
icon_colors |
list |
A list of colors to be used for the icons. Defaults to ['white']. |
['white'] |
icon_names |
list |
A list of names to be used for the icons. More icons can be found at https://fontawesome.com/v4/icons. Defaults to ['info']. |
['info'] |
spin |
bool |
If True, the icon will spin. Defaults to False. |
False |
add_legend |
bool |
If True, a legend will be added to the map. Defaults to True. |
True |
max_cluster_radius |
int |
The maximum cluster radius. Defaults to 80. |
80 |
**kwargs |
Other keyword arguments to pass to ipyleaflet.MarkerCluster(). For a list of available options, see https://github.com/Leaflet/Leaflet.markercluster. |
{} |
Source code in leafmap/leafmap.py
def add_points_from_xy(
self,
data,
x="longitude",
y="latitude",
popup=None,
layer_name="Marker Cluster",
color_column=None,
marker_colors=None,
icon_colors=["white"],
icon_names=["info"],
spin=False,
add_legend=True,
max_cluster_radius=80,
**kwargs,
):
"""Adds a marker cluster to the map.
Args:
data (str | pd.DataFrame): A csv or Pandas DataFrame containing x, y, z values.
x (str, optional): The column name for the x values. Defaults to "longitude".
y (str, optional): The column name for the y values. Defaults to "latitude".
popup (list, optional): A list of column names to be used as the popup. Defaults to None.
layer_name (str, optional): The name of the layer. Defaults to "Marker Cluster".
color_column (str, optional): The column name for the color values. Defaults to None.
marker_colors (list, optional): A list of colors to be used for the markers. Defaults to None.
icon_colors (list, optional): A list of colors to be used for the icons. Defaults to ['white'].
icon_names (list, optional): A list of names to be used for the icons. More icons can be found at https://fontawesome.com/v4/icons. Defaults to ['info'].
spin (bool, optional): If True, the icon will spin. Defaults to False.
add_legend (bool, optional): If True, a legend will be added to the map. Defaults to True.
max_cluster_radius (int, optional): The maximum cluster radius. Defaults to 80.
**kwargs: Other keyword arguments to pass to ipyleaflet.MarkerCluster(). For a list of available options,
see https://github.com/Leaflet/Leaflet.markercluster.
"""
import pandas as pd
color_options = [
"red",
"blue",
"green",
"purple",
"orange",
"darkred",
"lightred",
"beige",
"darkblue",
"darkgreen",
"cadetblue",
"darkpurple",
"white",
"pink",
"lightblue",
"lightgreen",
"gray",
"black",
"lightgray",
]
if isinstance(data, pd.DataFrame):
df = data
elif not data.startswith("http") and (not os.path.exists(data)):
raise FileNotFoundError("The specified input csv does not exist.")
elif data.endswith(".csv"):
df = pd.read_csv(data)
else:
import geopandas as gpd
gdf = gpd.read_file(data)
df = gdf_to_df(gdf)
df = points_from_xy(df, x, y)
col_names = df.columns.values.tolist()
if color_column is not None and color_column not in col_names:
raise ValueError(
f"The color column {color_column} does not exist in the dataframe."
)
if color_column is not None:
items = list(set(df[color_column]))
else:
items = None
if color_column is not None and marker_colors is None:
if len(items) > len(color_options):
raise ValueError(
f"The number of unique values in the color column {color_column} is greater than the number of available colors."
)
else:
marker_colors = color_options[: len(items)]
elif color_column is not None and marker_colors is not None:
if len(items) != len(marker_colors):
raise ValueError(
f"The number of unique values in the color column {color_column} is not equal to the number of available colors."
)
if items is not None:
if len(icon_colors) == 1:
icon_colors = icon_colors * len(items)
elif len(items) != len(icon_colors):
raise ValueError(
f"The number of unique values in the color column {color_column} is not equal to the number of available colors."
)
if len(icon_names) == 1:
icon_names = icon_names * len(items)
elif len(items) != len(icon_names):
raise ValueError(
f"The number of unique values in the color column {color_column} is not equal to the number of available colors."
)
if "geometry" in col_names:
col_names.remove("geometry")
if popup is not None:
if isinstance(popup, str) and (popup not in col_names):
raise ValueError(
f"popup must be one of the following: {', '.join(col_names)}"
)
elif isinstance(popup, list) and (
not all(item in col_names for item in popup)
):
raise ValueError(
f"All popup items must be select from: {', '.join(col_names)}"
)
else:
popup = col_names
df["x"] = df.geometry.x
df["y"] = df.geometry.y
points = list(zip(df["y"], df["x"]))
if popup is not None:
if isinstance(popup, str):
labels = df[popup]
markers = []
for index, point in enumerate(points):
if items is not None:
marker_color = marker_colors[
items.index(df[color_column][index])
]
icon_name = icon_names[items.index(df[color_column][index])]
icon_color = icon_colors[items.index(df[color_column][index])]
marker_icon = ipyleaflet.AwesomeIcon(
name=icon_name,
marker_color=marker_color,
icon_color=icon_color,
spin=spin,
)
else:
marker_icon = None
marker = ipyleaflet.Marker(
location=point,
draggable=False,
popup=widgets.HTML(str(labels[index])),
icon=marker_icon,
)
markers.append(marker)
elif isinstance(popup, list):
labels = []
for i in range(len(points)):
label = ""
for item in popup:
label = (
label
+ "<b>"
+ str(item)
+ "</b>"
+ ": "
+ str(df[item][i])
+ "<br>"
)
labels.append(label)
df["popup"] = labels
markers = []
for index, point in enumerate(points):
if items is not None:
marker_color = marker_colors[
items.index(df[color_column][index])
]
icon_name = icon_names[items.index(df[color_column][index])]
icon_color = icon_colors[items.index(df[color_column][index])]
marker_icon = ipyleaflet.AwesomeIcon(
name=icon_name,
marker_color=marker_color,
icon_color=icon_color,
spin=spin,
)
else:
marker_icon = None
marker = ipyleaflet.Marker(
location=point,
draggable=False,
popup=widgets.HTML(labels[index]),
icon=marker_icon,
)
markers.append(marker)
else:
markers = []
for point in points:
if items is not None:
marker_color = marker_colors[items.index(df[color_column][index])]
icon_name = icon_names[items.index(df[color_column][index])]
icon_color = icon_colors[items.index(df[color_column][index])]
marker_icon = ipyleaflet.AwesomeIcon(
name=icon_name,
marker_color=marker_color,
icon_color=icon_color,
spin=spin,
)
else:
marker_icon = None
marker = ipyleaflet.Marker(
location=point, draggable=False, icon=marker_icon
)
markers.append(marker)
marker_cluster = ipyleaflet.MarkerCluster(
markers=markers,
name=layer_name,
max_cluster_radius=max_cluster_radius,
**kwargs,
)
self.add(marker_cluster)
if items is not None and add_legend:
marker_colors = [check_color(c) for c in marker_colors]
self.add_legend(
title=color_column.title(), colors=marker_colors, labels=items
)
self.default_style = {"cursor": "default"}
add_markers(self, markers, x='lon', y='lat', radius=10, popup=None, font_size=2, stroke=True, color='#0033FF', weight=2, fill=True, fill_color=None, fill_opacity=0.2, opacity=1.0, shape='circle', layer_name='Markers', **kwargs)
¶
Adds markers to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
markers |
Union[List[List[Union[int, float]]], List[Union[int, float]]] |
List of markers. Each marker can be defined as a list of [x, y] coordinates or as a single [x, y] coordinate. |
required |
x |
str |
Name of the x-coordinate column in the marker data. Defaults to "lon". |
'lon' |
y |
str |
Name of the y-coordinate column in the marker data. Defaults to "lat". |
'lat' |
radius |
int |
Radius of the markers. Defaults to 10. |
10 |
popup |
str |
Popup text for the markers. Defaults to None. |
None |
font_size |
int |
Font size of the popup text. Defaults to 2. |
2 |
stroke |
bool |
Whether to display marker stroke. Defaults to True. |
True |
color |
str |
Color of the marker stroke. Defaults to "#0033FF". |
'#0033FF' |
weight |
int |
Weight of the marker stroke. Defaults to 2. |
2 |
fill |
bool |
Whether to fill markers. Defaults to True. |
True |
fill_color |
str |
Fill color of the markers. Defaults to None. |
None |
fill_opacity |
float |
Opacity of the marker fill. Defaults to 0.2. |
0.2 |
opacity |
float |
Opacity of the markers. Defaults to 1.0. |
1.0 |
shape |
str |
Shape of the markers. Options are "circle" or "marker". Defaults to "circle". |
'circle' |
layer_name |
str |
Name of the marker layer. Defaults to "Markers". |
'Markers' |
**kwargs |
Additional keyword arguments to pass to the marker plotting function. |
{} |
Returns:
| Type | Description |
|---|---|
None |
This function does not return any value. |
Source code in leafmap/leafmap.py
def add_markers(
self,
markers: Union[List[List[Union[int, float]]], List[Union[int, float]]],
x: str = "lon",
y: str = "lat",
radius: int = 10,
popup: Optional[str] = None,
font_size: int = 2,
stroke: bool = True,
color: str = "#0033FF",
weight: int = 2,
fill: bool = True,
fill_color: Optional[str] = None,
fill_opacity: float = 0.2,
opacity: float = 1.0,
shape: str = "circle",
layer_name: str = "Markers",
**kwargs,
) -> None:
"""
Adds markers to the map.
Args:
markers (Union[List[List[Union[int, float]]], List[Union[int, float]]]): List of markers.
Each marker can be defined as a list of [x, y] coordinates or as a single [x, y] coordinate.
x (str, optional): Name of the x-coordinate column in the marker data. Defaults to "lon".
y (str, optional): Name of the y-coordinate column in the marker data. Defaults to "lat".
radius (int, optional): Radius of the markers. Defaults to 10.
popup (str, optional): Popup text for the markers. Defaults to None.
font_size (int, optional): Font size of the popup text. Defaults to 2.
stroke (bool, optional): Whether to display marker stroke. Defaults to True.
color (str, optional): Color of the marker stroke. Defaults to "#0033FF".
weight (int, optional): Weight of the marker stroke. Defaults to 2.
fill (bool, optional): Whether to fill markers. Defaults to True.
fill_color (str, optional): Fill color of the markers. Defaults to None.
fill_opacity (float, optional): Opacity of the marker fill. Defaults to 0.2.
opacity (float, optional): Opacity of the markers. Defaults to 1.0.
shape (str, optional): Shape of the markers. Options are "circle" or "marker". Defaults to "circle".
layer_name (str, optional): Name of the marker layer. Defaults to "Markers".
**kwargs: Additional keyword arguments to pass to the marker plotting function.
Returns:
None: This function does not return any value.
"""
import geopandas as gpd
if (
isinstance(markers, list)
and len(markers) == 2
and isinstance(markers[0], (int, float))
and isinstance(markers[1], (int, float))
):
markers = [markers]
if isinstance(markers, list) and all(
isinstance(item, list) and len(item) == 2 for item in markers
):
df = pd.DataFrame(markers, columns=[y, x])
markers = gpd.GeoDataFrame(df, geometry=gpd.points_from_xy(df[x], df[y]))
if shape == "circle":
self.add_circle_markers_from_xy(
markers,
x,
y,
radius,
popup,
font_size,
stroke,
color,
weight,
fill,
fill_color,
fill_opacity,
opacity,
layer_name,
**kwargs,
)
elif shape == "marker":
self.add_gdf(markers, **kwargs)
add_minimap(self, zoom=5, position='bottomright')
¶
Adds a minimap (overview) to the ipyleaflet map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
zoom |
int |
Initial map zoom level. Defaults to 5. |
5 |
position |
str |
Position of the minimap. Defaults to "bottomright". |
'bottomright' |
Source code in leafmap/leafmap.py
def add_minimap(self, zoom=5, position="bottomright"):
"""Adds a minimap (overview) to the ipyleaflet map.
Args:
zoom (int, optional): Initial map zoom level. Defaults to 5.
position (str, optional): Position of the minimap. Defaults to "bottomright".
"""
layers = [get_basemap("Esri.WorldImagery")]
minimap = ipyleaflet.Map(
zoom_control=False,
attribution_control=False,
zoom=zoom,
center=self.center,
layers=layers,
)
minimap.layout.width = "150px"
minimap.layout.height = "150px"
ipyleaflet.link((minimap, "center"), (self, "center"))
minimap_control = ipyleaflet.WidgetControl(widget=minimap, position=position)
self.add(minimap_control)
add_mosaic_layer(self, url=None, titiler_endpoint=None, name='Mosaic Layer', attribution='', opacity=1.0, shown=True, **kwargs)
¶
Adds a STAC TileLayer to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
url |
str |
HTTP URL to a MosaicJSON. |
None |
titiler_endpoint |
str |
Titiler endpoint, e.g., "https://titiler.xyz". Defaults to None. |
None |
name |
str |
The layer name to use for the layer. Defaults to 'Mosaic Layer'. |
'Mosaic Layer' |
attribution |
str |
The attribution to use. Defaults to ''. |
'' |
opacity |
float |
The opacity of the layer. Defaults to 1. |
1.0 |
shown |
bool |
A flag indicating whether the layer should be on by default. Defaults to True. |
True |
Source code in leafmap/leafmap.py
def add_mosaic_layer(
self,
url=None,
titiler_endpoint=None,
name="Mosaic Layer",
attribution="",
opacity=1.0,
shown=True,
**kwargs,
):
"""Adds a STAC TileLayer to the map.
Args:
url (str): HTTP URL to a MosaicJSON.
titiler_endpoint (str, optional): Titiler endpoint, e.g., "https://titiler.xyz". Defaults to None.
name (str, optional): The layer name to use for the layer. Defaults to 'Mosaic Layer'.
attribution (str, optional): The attribution to use. Defaults to ''.
opacity (float, optional): The opacity of the layer. Defaults to 1.
shown (bool, optional): A flag indicating whether the layer should be on by default. Defaults to True.
"""
tile_url = mosaic_tile(url, titiler_endpoint, **kwargs)
bounds = mosaic_bounds(url, titiler_endpoint)
self.add_tile_layer(tile_url, name, attribution, opacity, shown)
self.fit_bounds([[bounds[1], bounds[0]], [bounds[3], bounds[2]]])
add_netcdf(self, filename, variables=None, palette=None, vmin=None, vmax=None, nodata=None, attribution=None, layer_name='NetCDF layer', shift_lon=True, lat='lat', lon='lon', lev='lev', level_index=0, time=0, **kwargs)
¶
Generate an ipyleaflet/folium TileLayer from a netCDF file. If you are using this function in JupyterHub on a remote server (e.g., Binder, Microsoft Planetary Computer), try adding to following two lines to the beginning of the notebook if the raster does not render properly.
1 2 | |
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
filename |
str |
File path or HTTP URL to the netCDF file. |
required |
variables |
int |
The variable/band names to extract data from the netCDF file. Defaults to None. If None, all variables will be extracted. |
None |
port |
str |
The port to use for the server. Defaults to "default". |
required |
palette |
str |
The name of the color palette from |
None |
vmin |
float |
The minimum value to use when colormapping the palette when plotting a single band. Defaults to None. |
None |
vmax |
float |
The maximum value to use when colormapping the palette when plotting a single band. Defaults to None. |
None |
nodata |
float |
The value from the band to use to interpret as not valid data. Defaults to None. |
None |
attribution |
str |
Attribution for the source raster. This defaults to a message about it being a local file.. Defaults to None. |
None |
layer_name |
str |
The layer name to use. Defaults to "netCDF layer". |
'NetCDF layer' |
shift_lon |
bool |
Flag to shift longitude values from [0, 360] to the range [-180, 180]. Defaults to True. |
True |
lat |
str |
Name of the latitude variable. Defaults to 'lat'. |
'lat' |
lon |
str |
Name of the longitude variable. Defaults to 'lon'. |
'lon' |
lev |
str |
Name of the level variable. Defaults to 'lev'. |
'lev' |
level_index |
int |
Index of level to use. Defaults to 0'. |
0 |
time |
int |
Index of time to use. Defaults to 0'. |
0 |
Source code in leafmap/leafmap.py
def add_netcdf(
self,
filename,
variables=None,
palette=None,
vmin=None,
vmax=None,
nodata=None,
attribution=None,
layer_name="NetCDF layer",
shift_lon=True,
lat="lat",
lon="lon",
lev="lev",
level_index=0,
time=0,
**kwargs,
):
"""Generate an ipyleaflet/folium TileLayer from a netCDF file.
If you are using this function in JupyterHub on a remote server (e.g., Binder, Microsoft Planetary Computer),
try adding to following two lines to the beginning of the notebook if the raster does not render properly.
import os
os.environ['LOCALTILESERVER_CLIENT_PREFIX'] = f'{os.environ['JUPYTERHUB_SERVICE_PREFIX'].lstrip('/')}/proxy/{{port}}'
Args:
filename (str): File path or HTTP URL to the netCDF file.
variables (int, optional): The variable/band names to extract data from the netCDF file. Defaults to None. If None, all variables will be extracted.
port (str, optional): The port to use for the server. Defaults to "default".
palette (str, optional): The name of the color palette from `palettable` to use when plotting a single band. See https://jiffyclub.github.io/palettable. Default is greyscale
vmin (float, optional): The minimum value to use when colormapping the palette when plotting a single band. Defaults to None.
vmax (float, optional): The maximum value to use when colormapping the palette when plotting a single band. Defaults to None.
nodata (float, optional): The value from the band to use to interpret as not valid data. Defaults to None.
attribution (str, optional): Attribution for the source raster. This defaults to a message about it being a local file.. Defaults to None.
layer_name (str, optional): The layer name to use. Defaults to "netCDF layer".
shift_lon (bool, optional): Flag to shift longitude values from [0, 360] to the range [-180, 180]. Defaults to True.
lat (str, optional): Name of the latitude variable. Defaults to 'lat'.
lon (str, optional): Name of the longitude variable. Defaults to 'lon'.
lev (str, optional): Name of the level variable. Defaults to 'lev'.
level_index (int, optional): Index of level to use. Defaults to 0'.
time (int, optional): Index of time to use. Defaults to 0'.
"""
tif, vars = netcdf_to_tif(
filename,
shift_lon=shift_lon,
lat=lat,
lon=lon,
lev=lev,
level_index=level_index,
time=time,
return_vars=True,
)
if variables is None:
if len(vars) >= 3:
band_idx = [1, 2, 3]
else:
band_idx = [1]
else:
if not set(variables).issubset(set(vars)):
raise ValueError(f"The variables must be a subset of {vars}.")
else:
band_idx = [vars.index(v) + 1 for v in variables]
self.add_raster(
tif,
band=band_idx,
palette=palette,
vmin=vmin,
vmax=vmax,
nodata=nodata,
attribution=attribution,
layer_name=layer_name,
**kwargs,
)
add_oam_gui(self, position='topright', opened=True)
¶
Add the OpenAerialMap search widget to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
position |
str |
The position of the widget. Defaults to "topright". |
'topright' |
opened |
bool |
Whether the widget is open. Defaults to True. |
True |
Source code in leafmap/leafmap.py
def add_oam_gui(self, position="topright", opened=True):
"""Add the OpenAerialMap search widget to the map.
Args:
position (str, optional): The position of the widget. Defaults to "topright".
opened (bool, optional): Whether the widget is open. Defaults to True.
"""
from .toolbar import oam_search_gui
oam_search_gui(self, position, opened)
add_osm_from_address(self, address, tags, dist=1000, layer_name='Untitled', style={}, hover_style={}, style_callback=None, fill_colors=['black'], info_mode='on_hover')
¶
Adds OSM entities within some distance N, S, E, W of address to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
address |
str |
The address to geocode and use as the central point around which to get the geometries. |
required |
tags |
dict |
Dict of tags used for finding objects in the selected area. Results returned are the union, not intersection of each individual tag. Each result matches at least one given tag. The dict keys should be OSM tags, (e.g., building, landuse, highway, etc) and the dict values should be either True to retrieve all items with the given tag, or a string to get a single tag-value combination, or a list of strings to get multiple values for the given tag. For example, tags = {‘building’: True} would return all building footprints in the area. tags = {‘amenity’:True, ‘landuse’:[‘retail’,’commercial’], ‘highway’:’bus_stop’} would return all amenities, landuse=retail, landuse=commercial, and highway=bus_stop. |
required |
dist |
int |
Distance in meters. Defaults to 1000. |
1000 |
layer_name |
str |
The layer name to be used.. Defaults to "Untitled". |
'Untitled' |
style |
dict |
A dictionary specifying the style to be used. Defaults to {}. |
{} |
hover_style |
dict |
Hover style dictionary. Defaults to {}. |
{} |
style_callback |
function |
Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None. |
None |
fill_colors |
list |
The random colors to use for filling polygons. Defaults to ["black"]. |
['black'] |
info_mode |
str |
Displays the attributes by either on_hover or on_click. Any value other than "on_hover" or "on_click" will be treated as None. Defaults to "on_hover". |
'on_hover' |
Source code in leafmap/leafmap.py
def add_osm_from_address(
self,
address,
tags,
dist=1000,
layer_name="Untitled",
style={},
hover_style={},
style_callback=None,
fill_colors=["black"],
info_mode="on_hover",
):
"""Adds OSM entities within some distance N, S, E, W of address to the map.
Args:
address (str): The address to geocode and use as the central point around which to get the geometries.
tags (dict): Dict of tags used for finding objects in the selected area. Results returned are the union, not intersection of each individual tag. Each result matches at least one given tag. The dict keys should be OSM tags, (e.g., building, landuse, highway, etc) and the dict values should be either True to retrieve all items with the given tag, or a string to get a single tag-value combination, or a list of strings to get multiple values for the given tag. For example, tags = {‘building’: True} would return all building footprints in the area. tags = {‘amenity’:True, ‘landuse’:[‘retail’,’commercial’], ‘highway’:’bus_stop’} would return all amenities, landuse=retail, landuse=commercial, and highway=bus_stop.
dist (int, optional): Distance in meters. Defaults to 1000.
layer_name (str, optional): The layer name to be used.. Defaults to "Untitled".
style (dict, optional): A dictionary specifying the style to be used. Defaults to {}.
hover_style (dict, optional): Hover style dictionary. Defaults to {}.
style_callback (function, optional): Styling function that is called for each feature, and should return the feature style. This styling function takes the feature as argument. Defaults to None.
fill_colors (list, optional): The random colors to use for filling polygons. Defaults to ["black"].