maplibregl module¶
The maplibregl module provides the Map class for creating interactive maps using the maplibre.ipywidget module.
Map (MapWidget)
¶
The Map class inherits from the MapWidget class of the maplibre.ipywidget module.
Source code in leafmap/maplibregl.py
class Map(MapWidget):
"""The Map class inherits from the MapWidget class of the maplibre.ipywidget module."""
def __init__(
self,
center: Tuple[float, float] = (0, 20),
zoom: float = 1,
pitch: float = 0,
bearing: float = 0,
style: str = "dark-matter",
height: str = "600px",
controls: Dict[str, str] = {
"navigation": "top-right",
"fullscreen": "top-right",
"scale": "bottom-left",
},
**kwargs: Any,
) -> None:
"""
Create a Map object.
Args:
center (tuple, optional): The center of the map (lon, lat). Defaults
to (0, 20).
zoom (float, optional): The zoom level of the map. Defaults to 1.
pitch (float, optional): The pitch of the map. Measured in degrees
away from the plane of the screen (0-85) Defaults to 0.
bearing (float, optional): The bearing of the map. Measured in degrees
counter-clockwise from north. Defaults to 0.
style (str, optional): The style of the map. It can be a string or a URL.
If it is a string, it must be one of the following: "dark-matter",
"positron", "voyager", "positron-nolabels", "dark-matter-nolabels",
"voyager-nolabels", or "demotiles". If a MapTiler API key is set,
you can also use any of the MapTiler styles, such as aquarelle,
backdrop, basic, bright, dataviz, landscape, ocean, openstreetmap, outdoor,
satellite, streets, toner, topo, winter, etc. If it is a URL, it must point to
a MapLibre style JSON. Defaults to "dark-matter".
height (str, optional): The height of the map. Defaults to "600px".
controls (dict, optional): The controls and their positions on the
map. Defaults to {"fullscreen": "top-right", "scale": "bottom-left"}.
**kwargs: Additional keyword arguments that are passed to the MapOptions class.
See https://maplibre.org/maplibre-gl-js/docs/API/type-aliases/MapOptions/
for more information.
Returns:
None
"""
carto_basemaps = [
"dark-matter",
"positron",
"voyager",
"positron-nolabels",
"dark-matter-nolabels",
"voyager-nolabels",
]
if isinstance(style, str):
if style.startswith("https"):
response = requests.get(style)
if response.status_code != 200:
print(
"The provided style URL is invalid. Falling back to 'dark-matter'."
)
style = "dark-matter"
elif style.startswith("3d-"):
style = maptiler_3d_style(
style=style.replace("3d-", "").lower(),
exaggeration=kwargs.pop("exaggeration", 1),
tile_size=kwargs.pop("tile_size", 512),
hillshade=kwargs.pop("hillshade", True),
)
elif style.lower() in carto_basemaps:
style = construct_carto_basemap_url(style.lower())
elif style == "demotiles":
style = "https://demotiles.maplibre.org/style.json"
elif "background-" in style:
color = style.split("-")[1]
style = background(color)
else:
style = construct_maptiler_style(style)
if style in carto_basemaps:
style = construct_carto_basemap_url(style)
if style is not None:
kwargs["style"] = style
if len(controls) == 0:
kwargs["attribution_control"] = False
map_options = MapOptions(
center=center, zoom=zoom, pitch=pitch, bearing=bearing, **kwargs
)
super().__init__(map_options, height=height)
super().use_message_queue()
for control, position in controls.items():
self.add_control(control, position)
self.layer_dict = {}
self.layer_dict["background"] = {
"layer": Layer(id="background", type=LayerType.BACKGROUND),
"opacity": 1.0,
"visible": True,
"type": "background",
"color": None,
}
self._style = style
self.style_dict = {}
for layer in self.get_style_layers():
self.style_dict[layer["id"]] = layer
self.source_dict = {}
def show(self) -> None:
"""Displays the map."""
return Container(self)
def _repr_html_(self, **kwargs):
"""Displays the map."""
filename = os.environ.get("MAPLIBRE_OUTPUT", None)
replace_key = os.environ.get("MAPTILER_REPLACE_KEY", False)
if filename is not None:
self.to_html(filename, replace_key=replace_key)
def add_layer(
self,
layer: "Layer",
before_id: Optional[str] = None,
name: Optional[str] = None,
) -> None:
"""
Adds a layer to the map.
This method adds a layer to the map. If a name is provided, it is used
as the key to store the layer in the layer dictionary. Otherwise,
the layer's ID is used as the key. If a before_id is provided, the
layer is inserted before the layer with that ID.
Args:
layer (Layer): The layer object to add to the map.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
name (str, optional): The name to use as the key to store the layer
in the layer dictionary. If None, the layer's ID is used as the key.
Returns:
None
"""
if isinstance(layer, dict):
if "minzoom" in layer:
layer["min-zoom"] = layer.pop("minzoom")
if "maxzoom" in layer:
layer["max-zoom"] = layer.pop("maxzoom")
layer = replace_top_level_hyphens(layer)
layer = Layer(**layer)
if name is None:
name = layer.id
if (
"paint" in layer.to_dict()
and f"{layer.type}-color" in layer.paint
and isinstance(layer.paint[f"{layer.type}-color"], str)
):
color = check_color(layer.paint[f"{layer.type}-color"])
else:
color = None
self.layer_dict[name] = {
"layer": layer,
"opacity": 1.0,
"visible": True,
"type": layer.type,
"color": color,
}
super().add_layer(layer, before_id=before_id)
def remove_layer(self, name: str) -> None:
"""
Removes a layer from the map.
This method removes a layer from the map using the layer's name.
Args:
name (str): The name of the layer to remove.
Returns:
None
"""
super().add_call("removeLayer", name)
if name in self.layer_dict:
self.layer_dict.pop(name)
def add_control(
self, control: Union[str, Any], position: str = "top-right", **kwargs: Any
) -> None:
"""
Adds a control to the map.
This method adds a control to the map. The control can be one of the
following: 'scale', 'fullscreen', 'geolocate', 'navigation', "attribution",
and "draw". If the control is a string, it is converted to the
corresponding control object. If the control is not a string, it is
assumed to be a control object.
Args:
control (str or object): The control to add to the map. Can be one
of the following: 'scale', 'fullscreen', 'geolocate', 'navigation',
"attribution", and "draw".
position (str, optional): The position of the control. Defaults to "top-right".
**kwargs: Additional keyword arguments that are passed to the control object.
Returns:
None
Raises:
ValueError: If the control is a string and is not one of the
following: 'scale', 'fullscreen', 'geolocate', 'navigation', "attribution".
"""
if isinstance(control, str):
control = control.lower()
if control == "scale":
control = ScaleControl(**kwargs)
elif control == "fullscreen":
control = FullscreenControl(**kwargs)
elif control == "geolocate":
control = GeolocateControl(**kwargs)
elif control == "navigation":
control = NavigationControl(**kwargs)
elif control == "attribution":
control = AttributionControl(**kwargs)
elif control == "draw":
self.add_draw_control(position=position, **kwargs)
elif control == "layers":
self.add_layer_control(position=position, **kwargs)
return
else:
print(
"Control can only be one of the following: 'scale', 'fullscreen', 'geolocate', 'navigation', and 'draw'."
)
return
super().add_control(control, position)
def add_draw_control(
self,
options: Optional[Dict[str, Any]] = None,
position: str = "top-left",
geojson: Optional[Dict[str, Any]] = None,
**kwargs: Any,
) -> None:
"""
Adds a drawing control to the map.
This method enables users to add interactive drawing controls to the map,
allowing for the creation, editing, and deletion of geometric shapes on
the map. The options, position, and initial GeoJSON can be customized.
Args:
options (Optional[Dict[str, Any]]): Configuration options for the
drawing control. Defaults to None.
position (str): The position of the control on the map. Defaults
to "top-left".
geojson (Optional[Dict[str, Any]]): Initial GeoJSON data to load
into the drawing control. Defaults to None.
**kwargs (Any): Additional keyword arguments to be passed to the
drawing control.
Returns:
None
"""
super().add_mapbox_draw(
options=options, position=position, geojson=geojson, **kwargs
)
def save_draw_features(self, filepath: str, indent=4, **kwargs) -> None:
"""
Saves the drawn features to a file.
This method saves all features created with the drawing control to a
specified file in GeoJSON format. If there are no features to save, the
file will not be created.
Args:
filepath (str): The path to the file where the GeoJSON data will be saved.
**kwargs (Any): Additional keyword arguments to be passed to
json.dump for custom serialization.
Returns:
None
Raises:
ValueError: If the feature collection is empty.
"""
if len(self.draw_feature_collection_all) > 0:
with open(filepath, "w") as f:
json.dump(self.draw_feature_collection_all, f, indent=indent, **kwargs)
else:
print("There are no features to save.")
def add_source(self, id: str, source: Union[str, Dict]) -> None:
"""
Adds a source to the map.
Args:
id (str): The ID of the source.
source (str or dict): The source data. .
Returns:
None
"""
super().add_source(id, source)
self.source_dict[id] = source
def set_center(self, lon: float, lat: float, zoom: Optional[int] = None) -> None:
"""
Sets the center of the map.
This method sets the center of the map to the specified longitude and latitude.
If a zoom level is provided, it also sets the zoom level of the map.
Args:
lon (float): The longitude of the center of the map.
lat (float): The latitude of the center of the map.
zoom (int, optional): The zoom level of the map. If None, the zoom
level is not changed.
Returns:
None
"""
center = [lon, lat]
self.add_call("setCenter", center)
if zoom is not None:
self.add_call("setZoom", zoom)
def set_zoom(self, zoom: Optional[int] = None) -> None:
"""
Sets the zoom level of the map.
This method sets the zoom level of the map to the specified value.
Args:
zoom (int): The zoom level of the map.
Returns:
None
"""
self.add_call("setZoom", zoom)
def fit_bounds(self, bounds: List[Tuple[float, float]]) -> None:
"""
Adjusts the viewport of the map to fit the specified geographical bounds
in the format of [[lon_min, lat_min], [lon_max, lat_max]] or
[lon_min, lat_min, lon_max, lat_max].
This method adjusts the viewport of the map so that the specified geographical bounds
are visible in the viewport. The bounds are specified as a list of two points,
where each point is a list of two numbers representing the longitude and latitude.
Args:
bounds (list): A list of two points representing the geographical bounds that
should be visible in the viewport. Each point is a list of two
numbers representing the longitude and latitude. For example,
[[32.958984, -5.353521],[43.50585, 5.615985]]
Returns:
None
"""
if isinstance(bounds, list):
if len(bounds) == 4 and all(isinstance(i, (int, float)) for i in bounds):
bounds = [[bounds[0], bounds[1]], [bounds[2], bounds[3]]]
self.add_call("fitBounds", bounds)
def add_basemap(
self,
basemap: Union[str, xyzservices.TileProvider] = None,
opacity: float = 1.0,
visible: bool = True,
attribution: Optional[str] = None,
**kwargs: Any,
) -> None:
"""
Adds a basemap to the map.
This method adds a basemap to the map. The basemap can be a string from
predefined basemaps, an instance of xyzservices.TileProvider, or a key
from the basemaps dictionary.
Args:
basemap (str or TileProvider, optional): The basemap to add. Can be
one of the predefined strings, an instance of xyzservices.TileProvider,
or a key from the basemaps dictionary. Defaults to None, which adds
the basemap widget.
opacity (float, optional): The opacity of the basemap. Defaults to 1.0.
visible (bool, optional): Whether the basemap is visible or not.
Defaults to True.
attribution (str, optional): The attribution text to display for the
basemap. If None, the attribution text is taken from the basemap
or the TileProvider. Defaults to None.
**kwargs: Additional keyword arguments that are passed to the
RasterTileSource class. See https://bit.ly/4erD2MQ for more information.
Returns:
None
Raises:
ValueError: If the basemap is not one of the predefined strings,
not an instance of TileProvider, and not a key from the basemaps dictionary.
"""
if basemap is None:
return self._basemap_widget()
map_dict = {
"ROADMAP": "Google Maps",
"SATELLITE": "Google Satellite",
"TERRAIN": "Google Terrain",
"HYBRID": "Google Hybrid",
}
name = basemap
url = None
max_zoom = 30
min_zoom = 0
if isinstance(basemap, str) and basemap.upper() in map_dict:
layer = get_google_map(basemap.upper(), **kwargs)
url = layer.url
name = layer.name
attribution = layer.attribution
elif isinstance(basemap, xyzservices.TileProvider):
name = basemap.name
url = basemap.build_url()
if attribution is None:
attribution = basemap.attribution
if "max_zoom" in basemap.keys():
max_zoom = basemap["max_zoom"]
if "min_zoom" in basemap.keys():
min_zoom = basemap["min_zoom"]
elif basemap in basemaps:
url = basemaps[basemap]["url"]
if attribution is None:
attribution = basemaps[basemap]["attribution"]
if "max_zoom" in basemaps[basemap]:
max_zoom = basemaps[basemap]["max_zoom"]
if "min_zoom" in basemaps[basemap]:
min_zoom = basemaps[basemap]["min_zoom"]
else:
print(
"Basemap can only be one of the following:\n {}".format(
"\n ".join(basemaps.keys())
)
)
return
raster_source = RasterTileSource(
tiles=[url],
attribution=attribution,
max_zoom=max_zoom,
min_zoom=min_zoom,
tile_size=256,
**kwargs,
)
layer = Layer(id=name, source=raster_source, type=LayerType.RASTER)
self.add_layer(layer)
self.set_opacity(name, opacity)
self.set_visibility(name, visible)
def add_geojson(
self,
data: Union[str, Dict],
layer_type: Optional[str] = None,
filter: Optional[Dict] = None,
paint: Optional[Dict] = None,
name: Optional[str] = None,
fit_bounds: bool = True,
visible: bool = True,
before_id: Optional[str] = None,
source_args: Dict = {},
**kwargs: Any,
) -> None:
"""
Adds a GeoJSON layer to the map.
This method adds a GeoJSON layer to the map. The GeoJSON data can be a
URL to a GeoJSON file or a GeoJSON dictionary. If a name is provided, it
is used as the key to store the layer in the layer dictionary. Otherwise,
a random name is generated.
Args:
data (str | dict): The GeoJSON data. This can be a URL to a GeoJSON
file or a GeoJSON dictionary.
layer_type (str, optional): The type of the layer. It can be one of
the following: 'circle', 'fill', 'fill-extrusion', 'line', 'symbol',
'raster', 'background', 'heatmap', 'hillshade'. If None, the type
is inferred from the GeoJSON data.
filter (dict, optional): The filter to apply to the layer. If None,
no filter is applied.
paint (dict, optional): The paint properties to apply to the layer.
If None, no paint properties are applied.
name (str, optional): The name of the layer. If None, a random name
is generated.
fit_bounds (bool, optional): Whether to adjust the viewport of the
map to fit the bounds of the GeoJSON data. Defaults to True.
visible (bool, optional): Whether the layer is visible or not.
Defaults to True.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
source_args (dict, optional): Additional keyword arguments that are
passed to the GeoJSONSource class.
**kwargs: Additional keyword arguments that are passed to the Layer class.
See https://maplibre.org/maplibre-style-spec/layers/ for more info.
Returns:
None
Raises:
ValueError: If the data is not a URL or a GeoJSON dictionary.
"""
import os
bounds = None
geom_type = None
if isinstance(data, str):
if os.path.isfile(data) or data.startswith("http"):
data = gpd.read_file(data).__geo_interface__
bounds = get_bounds(data)
source = GeoJSONSource(data=data, **source_args)
else:
raise ValueError("The data must be a URL or a GeoJSON dictionary.")
elif isinstance(data, dict):
source = GeoJSONSource(data=data, **source_args)
bounds = get_bounds(data)
else:
raise ValueError("The data must be a URL or a GeoJSON dictionary.")
if name is None:
name = "geojson"
if filter is not None:
kwargs["filter"] = filter
if paint is None:
if "features" in data:
geom_type = data["features"][0]["geometry"]["type"]
elif "geometry" in data:
geom_type = data["geometry"]["type"]
if geom_type in ["Point", "MultiPoint"]:
if layer_type is None:
layer_type = "circle"
paint = {
"circle-radius": 5,
"circle-color": "#3388ff",
"circle-stroke-color": "#ffffff",
"circle-stroke-width": 1,
}
elif geom_type in ["LineString", "MultiLineString"]:
if layer_type is None:
layer_type = "line"
paint = {"line-color": "#3388ff", "line-width": 2}
elif geom_type in ["Polygon", "MultiPolygon"]:
if layer_type is None:
layer_type = "fill"
paint = {
"fill-color": "#3388ff",
"fill-opacity": 0.8,
"fill-outline-color": "#ffffff",
}
if paint is not None:
kwargs["paint"] = paint
layer = Layer(
id=name,
type=layer_type,
source=source,
**kwargs,
)
self.add_layer(layer, before_id=before_id, name=name)
self.add_popup(name)
if fit_bounds and bounds is not None:
self.fit_bounds(bounds)
self.set_visibility(name, visible)
if isinstance(paint, dict) and f"{layer_type}-opacity" in paint:
self.set_opacity(name, paint[f"{layer_type}-opacity"])
else:
self.set_opacity(name, 1.0)
def add_vector(
self,
data: Union[str, Dict],
layer_type: Optional[str] = None,
filter: Optional[Dict] = None,
paint: Optional[Dict] = None,
name: Optional[str] = None,
fit_bounds: bool = True,
visible: bool = True,
before_id: Optional[str] = None,
source_args: Dict = {},
**kwargs: Any,
) -> None:
"""
Adds a vector layer to the map.
This method adds a vector layer to the map. The vector data can be a
URL or local file path to a vector file. If a name is provided, it
is used as the key to store the layer in the layer dictionary. Otherwise,
a random name is generated.
Args:
data (str | dict): The vector data. This can be a URL or local file
path to a vector file.
layer_type (str, optional): The type of the layer. If None, the type
is inferred from the GeoJSON data.
filter (dict, optional): The filter to apply to the layer. If None,
no filter is applied.
paint (dict, optional): The paint properties to apply to the layer.
If None, no paint properties are applied.
name (str, optional): The name of the layer. If None, a random name
is generated.
fit_bounds (bool, optional): Whether to adjust the viewport of the
map to fit the bounds of the GeoJSON data. Defaults to True.
visible (bool, optional): Whether the layer is visible or not.
Defaults to True.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
source_args (dict, optional): Additional keyword arguments that are
passed to the GeoJSONSource class.
**kwargs: Additional keyword arguments that are passed to the Layer class.
Returns:
None
Raises:
ValueError: If the data is not a URL or a GeoJSON dictionary.
"""
if not isinstance(data, gpd.GeoDataFrame):
data = gpd.read_file(data).__geo_interface__
else:
data = data.__geo_interface__
self.add_geojson(
data,
layer_type=layer_type,
filter=filter,
paint=paint,
name=name,
fit_bounds=fit_bounds,
visible=visible,
before_id=before_id,
source_args=source_args,
**kwargs,
)
def add_gdf(
self,
gdf: gpd.GeoDataFrame,
layer_type: Optional[str] = None,
filter: Optional[Dict] = None,
paint: Optional[Dict] = None,
name: Optional[str] = None,
fit_bounds: bool = True,
visible: bool = True,
before_id: Optional[str] = None,
source_args: Dict = {},
**kwargs: Any,
) -> None:
"""
Adds a vector layer to the map.
This method adds a GeoDataFrame to the map as a vector layer.
Args:
gdf (gpd.GeoDataFrame): The GeoDataFrame to add to the map.
layer_type (str, optional): The type of the layer. If None, the type
is inferred from the GeoJSON data.
filter (dict, optional): The filter to apply to the layer. If None,
no filter is applied.
paint (dict, optional): The paint properties to apply to the layer.
If None, no paint properties are applied.
name (str, optional): The name of the layer. If None, a random name
is generated.
fit_bounds (bool, optional): Whether to adjust the viewport of the
map to fit the bounds of the GeoJSON data. Defaults to True.
visible (bool, optional): Whether the layer is visible or not.
Defaults to True.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
source_args (dict, optional): Additional keyword arguments that are
passed to the GeoJSONSource class.
**kwargs: Additional keyword arguments that are passed to the Layer class.
Returns:
None
Raises:
ValueError: If the data is not a URL or a GeoJSON dictionary.
"""
if not isinstance(gdf, gpd.GeoDataFrame):
raise ValueError("The data must be a GeoDataFrame.")
geojson = gdf.__geo_interface__
self.add_geojson(
geojson,
layer_type=layer_type,
filter=filter,
paint=paint,
name=name,
fit_bounds=fit_bounds,
visible=visible,
before_id=before_id,
source_args=source_args,
**kwargs,
)
def add_tile_layer(
self,
url: str,
name: str = "Tile Layer",
attribution: str = "",
opacity: float = 1.0,
visible: bool = True,
tile_size: int = 256,
before_id: Optional[str] = None,
source_args: Dict = {},
**kwargs: Any,
) -> None:
"""
Adds a TileLayer to the map.
This method adds a TileLayer to the map. The TileLayer is created from
the specified URL, and it is added to the map with the specified
name, attribution, visibility, and tile size.
Args:
url (str): The URL of the tile layer.
name (str, optional): The name to use for the layer. Defaults to '
Tile Layer'.
attribution (str, optional): The attribution to use for the layer.
Defaults to ''.
visible (bool, optional): Whether the layer should be visible by
default. Defaults to True.
tile_size (int, optional): The size of the tiles in the layer.
Defaults to 256.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
source_args (dict, optional): Additional keyword arguments that are
passed to the RasterTileSource class.
**kwargs: Additional keyword arguments that are passed to the Layer class.
See https://eodagmbh.github.io/py-maplibregl/api/layer/ for more information.
Returns:
None
"""
raster_source = RasterTileSource(
tiles=[url.strip()],
attribution=attribution,
tile_size=tile_size,
**source_args,
)
layer = Layer(id=name, source=raster_source, type=LayerType.RASTER, **kwargs)
self.add_layer(layer, before_id=before_id, name=name)
self.set_visibility(name, visible)
self.set_opacity(name, opacity)
def add_wms_layer(
self,
url: str,
layers: str,
format: str = "image/png",
name: str = "WMS Layer",
attribution: str = "",
opacity: float = 1.0,
visible: bool = True,
tile_size: int = 256,
before_id: Optional[str] = None,
source_args: Dict = {},
**kwargs: Any,
) -> None:
"""
Adds a WMS layer to the map.
This method adds a WMS layer to the map. The WMS is created from
the specified URL, and it is added to the map with the specified
name, attribution, visibility, and tile size.
Args:
url (str): The URL of the tile layer.
layers (str): The layers to include in the WMS request.
format (str, optional): The format of the tiles in the layer.
name (str, optional): The name to use for the layer. Defaults to
'WMS Layer'.
attribution (str, optional): The attribution to use for the layer.
Defaults to ''.
visible (bool, optional): Whether the layer should be visible by
default. Defaults to True.
tile_size (int, optional): The size of the tiles in the layer.
Defaults to 256.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
source_args (dict, optional): Additional keyword arguments that are
passed to the RasterTileSource class.
**kwargs: Additional keyword arguments that are passed to the Layer class.
See https://eodagmbh.github.io/py-maplibregl/api/layer/ for more information.
Returns:
None
"""
url = f"{url.strip()}?service=WMS&request=GetMap&layers={layers}&styles=&format={format.replace('/', '%2F')}&transparent=true&version=1.1.1&height=256&width=256&srs=EPSG%3A3857&bbox={{bbox-epsg-3857}}"
self.add_tile_layer(
url,
name=name,
attribution=attribution,
opacity=opacity,
visible=visible,
tile_size=tile_size,
before_id=before_id,
source_args=source_args,
**kwargs,
)
def add_ee_layer(
self,
ee_object=None,
vis_params={},
asset_id: str = None,
name: str = None,
opacity: float = 1.0,
attribution: str = "Google Earth Engine",
visible: bool = True,
before_id: Optional[str] = None,
ee_initialize: bool = False,
**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:
ee_object (object): The Earth Engine object to display.
vis_params (dict): Visualization parameters. For example, {'min': 0, 'max': 100}.
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.
opacity (float, optional): The opacity of the tile layer (0 to 1).
Default is 1.
attribution (str, optional): The attribution text to be displayed.
Default is "Google Earth Engine".
visible (bool, optional): Whether the tile layer should be shown on
the map. Default is True.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
ee_initialize (bool, optional): Whether to initialize the Earth Engine
**kwargs: Additional keyword arguments to be passed to the underlying
`add_tile_layer` method.
Returns:
None
"""
import pandas as pd
if isinstance(asset_id, str):
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,
opacity=opacity,
visible=visible,
before_id=before_id,
**kwargs,
)
else:
print(f"The provided EE tile layer {asset_id} does not exist.")
elif ee_object is not None:
try:
import geemap
from geemap.ee_tile_layers import _get_tile_url_format
if ee_initialize:
geemap.ee_initialize()
url = _get_tile_url_format(ee_object, vis_params)
if name is None:
name = "EE Layer"
self.add_tile_layer(
url,
name,
attribution=attribution,
opacity=opacity,
visible=visible,
before_id=before_id,
**kwargs,
)
except Exception as e:
print(e)
print(
"Please install the `geemap` package to use the `add_ee_layer` function."
)
return
def add_cog_layer(
self,
url: str,
name: Optional[str] = None,
attribution: str = "",
opacity: float = 1.0,
visible: bool = True,
bands: Optional[List[int]] = None,
titiler_endpoint: str = "https://titiler.xyz",
fit_bounds: bool = True,
before_id: Optional[str] = None,
**kwargs: Any,
) -> None:
"""
Adds a Cloud Optimized Geotiff (COG) TileLayer to the map.
This method adds a COG TileLayer to the map. The COG TileLayer is created
from the specified URL, and it is added to the map with the specified name,
attribution, opacity, visibility, and bands.
Args:
url (str): The URL of the COG tile layer.
name (str, optional): The name to use for the layer. If None, a
random name is generated. Defaults to None.
attribution (str, optional): The attribution to use for the layer.
Defaults to ''.
opacity (float, optional): The opacity of the layer. Defaults to 1.0.
visible (bool, optional): Whether the layer should be visible by default.
Defaults to True.
bands (list, optional): A list of bands to use for the layer.
Defaults to None.
titiler_endpoint (str, optional): The endpoint of the titiler service.
Defaults to "https://titiler.xyz".
fit_bounds (bool, optional): Whether to adjust the viewport of
the map to fit the bounds of the layer. 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"]`.
Returns:
None
"""
import numpy as np
if "nodata" not in kwargs:
kwargs["nodata"] = np.nan
if name is None:
name = "COG_" + random_string()
tile_url = cog_tile(url, bands, titiler_endpoint, **kwargs)
bounds = cog_bounds(url, titiler_endpoint)
self.add_tile_layer(
tile_url, name, attribution, opacity, visible, before_id=before_id
)
if fit_bounds:
self.fit_bounds([[bounds[0], bounds[1]], [bounds[2], bounds[3]]])
def add_stac_layer(
self,
url: Optional[str] = None,
collection: Optional[str] = None,
item: Optional[str] = None,
assets: Optional[Union[str, List[str]]] = None,
bands: Optional[List[str]] = None,
titiler_endpoint: Optional[str] = None,
name: str = "STAC Layer",
attribution: str = "",
opacity: float = 1.0,
visible: bool = True,
fit_bounds: bool = True,
before_id: Optional[str] = None,
**kwargs: Any,
) -> None:
"""
Adds a STAC TileLayer to the map.
This method adds a STAC TileLayer to the map. The STAC TileLayer is
created from the specified URL, collection, item, assets, and bands, and
it is added to the map with the specified name, attribution, opacity,
visibility, and fit bounds.
Args:
url (str, optional): HTTP URL to a STAC item, e.g., https://bit.ly/3VlttGm.
Defaults to None.
collection (str, optional): The Microsoft Planetary Computer STAC
collection ID, e.g., landsat-8-c2-l2. Defaults to None.
item (str, optional): The Microsoft Planetary Computer STAC item ID, e.g.,
LC08_L2SP_047027_20201204_02_T1. Defaults to None.
assets (str | list, optional): The Microsoft Planetary Computer STAC asset ID,
e.g., ["SR_B7", "SR_B5", "SR_B4"]. Defaults to None.
bands (list, optional): A list of band names, e.g.,
["SR_B7", "SR_B5", "SR_B4"]. Defaults to None.
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.
visible (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.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
**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"]`.
Returns:
None
"""
import numpy as np
if "nodata" not in kwargs:
kwargs["nodata"] = np.nan
if "colormap_name" in kwargs and kwargs["colormap_name"] is None:
kwargs.pop("colormap_name")
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, visible, before_id=before_id
)
if fit_bounds:
self.fit_bounds([[bounds[0], bounds[1]], [bounds[2], bounds[3]]])
def add_raster(
self,
source,
indexes=None,
colormap=None,
vmin=None,
vmax=None,
nodata=None,
attribution="Localtileserver",
name="Raster",
before_id=None,
fit_bounds=True,
visible=True,
opacity=1.0,
array_args={},
client_args={"cors_all": 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.
indexes (int, optional): The band(s) to use. Band indexing starts
at 1. Defaults to None.
colormap (str, optional): The name of the colormap from `matplotlib`
to use when plotting a single band.
See https://matplotlib.org/stable/gallery/color/colormap_reference.html.
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 'Raster'.
layer_index (int, optional): The index of the layer. Defaults to None.
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.
opacity (float, optional): The opacity of the layer. Defaults to 1.0.
array_args (dict, optional): Additional arguments to pass to
`array_to_memory_file` when reading the raster. Defaults to {}.
client_args (dict, optional): Additional arguments to pass to
localtileserver.TileClient. Defaults to { "cors_all": False }.
"""
import numpy as np
import xarray as xr
if isinstance(source, np.ndarray) or isinstance(source, xr.DataArray):
source = array_to_image(source, **array_args)
tile_layer, tile_client = get_local_tile_layer(
source,
indexes=indexes,
colormap=colormap,
vmin=vmin,
vmax=vmax,
nodata=nodata,
opacity=opacity,
attribution=attribution,
layer_name=name,
client_args=client_args,
return_client=True,
**kwargs,
)
self.add_tile_layer(
tile_layer.url,
name=name,
opacity=opacity,
visible=visible,
attribution=attribution,
before_id=before_id,
)
bounds = tile_client.bounds() # [ymin, ymax, xmin, xmax]
bounds = [[bounds[2], bounds[0]], [bounds[3], bounds[1]]]
# [minx, miny, maxx, maxy]
if fit_bounds:
self.fit_bounds(bounds)
def to_html(
self,
output: str = None,
title: str = "My Awesome Map",
width: str = "100%",
height: str = "100%",
replace_key: bool = False,
remove_port: bool = True,
preview: bool = False,
overwrite: bool = False,
**kwargs,
):
"""Render the map to an HTML page.
Args:
output (str, optional): The output HTML file. If None, the HTML content
is returned as a string. Defaults
title (str, optional): The title of the HTML page. Defaults to 'My Awesome Map'.
width (str, optional): The width of the map. Defaults to '100%'.
height (str, optional): The height of the map. Defaults to '100%'.
replace_key (bool, optional): Whether to replace the API key in the HTML.
If True, the API key is replaced with the public API key.
The API key is read from the environment variable `MAPTILER_KEY`.
The public API key is read from the environment variable `MAPTILER_KEY_PUBLIC`.
Defaults to False.
remove_port (bool, optional): Whether to remove the port number from the HTML.
preview (bool, optional): Whether to preview the HTML file in a web browser.
Defaults to False.
overwrite (bool, optional): Whether to overwrite the output file if it already exists.
**kwargs: Additional keyword arguments that are passed to the
`maplibre.ipywidget.MapWidget.to_html()` method.
Returns:
str: The HTML content of the map.
"""
if isinstance(height, int):
height = f"{height}px"
if isinstance(width, int):
width = f"{width}px"
if "style" not in kwargs:
kwargs["style"] = f"width: {width}; height: {height};"
else:
kwargs["style"] += f"width: {width}; height: {height};"
html = super().to_html(title=title, **kwargs)
if isinstance(height, str) and ("%" in height):
style_before = """</style>\n"""
style_after = (
"""html, body {height: 100%; margin: 0; padding: 0;} #pymaplibregl {width: 100%; height: """
+ height
+ """;}\n</style>\n"""
)
html = html.replace(style_before, style_after)
div_before = f"""<div id="pymaplibregl" style="width: 100%; height: {height};"></div>"""
div_after = f"""<div id="pymaplibregl"></div>"""
html = html.replace(div_before, div_after)
div_before = f"""<div id="pymaplibregl" style="height: {height};"></div>"""
html = html.replace(div_before, div_after)
if replace_key or (os.getenv("MAPTILER_REPLACE_KEY") is not None):
key_before = get_api_key("MAPTILER_KEY")
key_after = get_api_key("MAPTILER_KEY_PUBLIC")
if key_after is not None:
html = html.replace(key_before, key_after)
if remove_port:
html = remove_port_from_string(html)
if output is None:
output = os.getenv("MAPLIBRE_OUTPUT", None)
if output:
if not overwrite and os.path.exists(output):
import glob
num = len(glob.glob(output.replace(".html", "*.html")))
output = output.replace(".html", f"_{num}.html")
with open(output, "w") as f:
f.write(html)
if preview:
import webbrowser
webbrowser.open(output)
else:
return html
def set_paint_property(self, name: str, prop: str, value: Any) -> None:
"""
Set the opacity of a layer.
This method sets the opacity of the specified layer to the specified value.
Args:
name (str): The name of the layer.
opacity (float): The opacity value to set.
Returns:
None
"""
super().set_paint_property(name, prop, value)
if "opacity" in prop and name in self.layer_dict:
self.layer_dict[name]["opacity"] = value
elif name in self.style_dict:
layer = self.style_dict[name]
if "paint" in layer:
layer["paint"][prop] = value
def set_layout_property(self, name: str, prop: str, value: Any) -> None:
"""
Set the layout property of a layer.
This method sets the layout property of the specified layer to the specified value.
Args:
name (str): The name of the layer.
prop (str): The layout property to set.
value (Any): The value to set.
Returns:
None
"""
super().set_layout_property(name, prop, value)
if name in self.style_dict:
layer = self.style_dict[name]
if "layout" in layer:
layer["layout"][prop] = value
def set_color(self, name: str, color: str) -> None:
"""
Set the color of a layer.
This method sets the color of the specified layer to the specified value.
Args:
name (str): The name of the layer.
color (str): The color value to set.
Returns:
None
"""
color = check_color(color)
super().set_paint_property(
name, f"{self.layer_dict[name]['layer'].type}-color", color
)
self.layer_dict[name]["color"] = color
def set_opacity(self, name: str, opacity: float) -> None:
"""
Set the opacity of a layer.
This method sets the opacity of the specified layer to the specified value.
Args:
name (str): The name of the layer.
opacity (float): The opacity value to set.
Returns:
None
"""
if name in self.layer_dict:
layer_type = self.layer_dict[name]["layer"].to_dict()["type"]
prop_name = f"{layer_type}-opacity"
self.layer_dict[name]["opacity"] = opacity
elif name in self.style_dict:
layer = self.style_dict[name]
layer_type = layer.get("type")
prop_name = f"{layer_type}-opacity"
if "paint" in layer:
layer["paint"][prop_name] = opacity
super().set_paint_property(name, prop_name, opacity)
def set_visibility(self, name: str, visible: bool) -> None:
"""
Set the visibility of a layer.
This method sets the visibility of the specified layer to the specified value.
Args:
name (str): The name of the layer.
visible (bool): The visibility value to set.
Returns:
None
"""
super().set_visibility(name, visible)
self.layer_dict[name]["visible"] = visible
def layer_interact(self, name=None):
"""Create a layer widget for changing the visibility and opacity of a layer.
Args:
name (str): The name of the layer.
Returns:
ipywidgets.Widget: The layer widget.
"""
import ipywidgets as widgets
layer_names = list(self.layer_dict.keys())
if name is None:
name = layer_names[-1]
elif name not in layer_names:
raise ValueError(f"Layer {name} not found.")
style = {"description_width": "initial"}
dropdown = widgets.Dropdown(
options=layer_names,
value=name,
description="Layer",
style=style,
)
checkbox = widgets.Checkbox(
description="Visible",
value=self.layer_dict[name]["visible"],
style=style,
layout=widgets.Layout(width="120px"),
)
opacity_slider = widgets.FloatSlider(
description="Opacity",
min=0,
max=1,
step=0.01,
value=self.layer_dict[name]["opacity"],
style=style,
)
color_picker = widgets.ColorPicker(
concise=True,
value="white",
style=style,
)
if self.layer_dict[name]["color"] is not None:
color_picker.value = self.layer_dict[name]["color"]
color_picker.disabled = False
else:
color_picker.value = "white"
color_picker.disabled = True
def color_picker_event(change):
if self.layer_dict[dropdown.value]["color"] is not None:
self.set_color(dropdown.value, change.new)
color_picker.observe(color_picker_event, "value")
hbox = widgets.HBox(
[dropdown, checkbox, opacity_slider, color_picker],
layout=widgets.Layout(width="750px"),
)
def dropdown_event(change):
name = change.new
checkbox.value = self.layer_dict[dropdown.value]["visible"]
opacity_slider.value = self.layer_dict[dropdown.value]["opacity"]
if self.layer_dict[dropdown.value]["color"] is not None:
color_picker.value = self.layer_dict[dropdown.value]["color"]
color_picker.disabled = False
else:
color_picker.value = "white"
color_picker.disabled = True
dropdown.observe(dropdown_event, "value")
def update_layer(change):
self.set_visibility(dropdown.value, checkbox.value)
self.set_opacity(dropdown.value, opacity_slider.value)
checkbox.observe(update_layer, "value")
opacity_slider.observe(update_layer, "value")
return hbox
def style_layer_interact(self, id=None):
"""Create a layer widget for changing the visibility and opacity of a style layer.
Args:
id (str): The is of the layer.
Returns:
ipywidgets.Widget: The layer widget.
"""
import ipywidgets as widgets
layer_ids = list(self.style_dict.keys())
layer_ids.sort()
if id is None:
id = layer_ids[0]
elif id not in layer_ids:
raise ValueError(f"Layer {id} not found.")
layer = self.style_dict[id]
layer_type = layer.get("type")
style = {"description_width": "initial"}
dropdown = widgets.Dropdown(
options=layer_ids,
value=id,
description="Layer",
style=style,
)
visibility = layer.get("layout", {}).get("visibility", "visible")
if visibility == "visible":
visibility = True
else:
visibility = False
checkbox = widgets.Checkbox(
description="Visible",
value=visibility,
style=style,
layout=widgets.Layout(width="120px"),
)
opacity = layer.get("paint", {}).get(f"{layer_type}-opacity", 1.0)
opacity_slider = widgets.FloatSlider(
description="Opacity",
min=0,
max=1,
step=0.01,
value=opacity,
style=style,
)
def extract_rgb(rgba_string):
import re
# Extracting the RGB values using regex
rgb_tuple = tuple(map(int, re.findall(r"\d+", rgba_string)[:3]))
return rgb_tuple
color = layer.get("paint", {}).get(f"{layer_type}-color", "white")
if color.startswith("rgba"):
color = extract_rgb(color)
color = check_color(color)
color_picker = widgets.ColorPicker(
concise=True,
value=color,
style=style,
)
def color_picker_event(change):
self.set_paint_property(dropdown.value, f"{layer_type}-color", change.new)
color_picker.observe(color_picker_event, "value")
hbox = widgets.HBox(
[dropdown, checkbox, opacity_slider, color_picker],
layout=widgets.Layout(width="750px"),
)
def dropdown_event(change):
name = change.new
layer = self.style_dict[name]
layer_type = layer.get("type")
visibility = layer.get("layout", {}).get("visibility", "visible")
if visibility == "visible":
visibility = True
else:
visibility = False
checkbox.value = visibility
opacity = layer.get("paint", {}).get(f"{layer_type}-opacity", 1.0)
opacity_slider.value = opacity
color = layer.get("paint", {}).get(f"{layer_type}-color", "white")
if color.startswith("rgba"):
color = extract_rgb(color)
color = check_color(color)
if color:
color_picker.value = color
color_picker.disabled = False
else:
color_picker.value = "white"
color_picker.disabled = True
dropdown.observe(dropdown_event, "value")
def update_layer(change):
self.set_layout_property(
dropdown.value, "visibility", "visible" if checkbox.value else "none"
)
self.set_paint_property(
dropdown.value, f"{layer_type}-opacity", opacity_slider.value
)
checkbox.observe(update_layer, "value")
opacity_slider.observe(update_layer, "value")
return hbox
def _basemap_widget(self, name=None):
"""Create a layer widget for changing the visibility and opacity of a layer.
Args:
name (str): The name of the layer.
Returns:
ipywidgets.Widget: The layer widget.
"""
import ipywidgets as widgets
layer_names = [
basemaps[basemap]["name"]
for basemap in basemaps.keys()
if "layers" not in basemaps[basemap]
][1:]
if name is None:
name = layer_names[0]
elif name not in layer_names:
raise ValueError(f"Layer {name} not found.")
tile = basemaps[name]
raster_source = RasterTileSource(
tiles=[tile["url"]],
attribution=tile["attribution"],
tile_size=256,
)
layer = Layer(id=name, source=raster_source, type=LayerType.RASTER)
self.add_layer(layer)
self.set_opacity(name, 1.0)
self.set_visibility(name, True)
style = {"description_width": "initial"}
dropdown = widgets.Dropdown(
options=layer_names,
value=name,
description="Basemap",
style=style,
)
checkbox = widgets.Checkbox(
description="Visible",
value=self.layer_dict[name]["visible"],
style=style,
layout=widgets.Layout(width="120px"),
)
opacity_slider = widgets.FloatSlider(
description="Opacity",
min=0,
max=1,
step=0.01,
value=self.layer_dict[name]["opacity"],
style=style,
)
hbox = widgets.HBox(
[dropdown, checkbox, opacity_slider], layout=widgets.Layout(width="600px")
)
def dropdown_event(change):
old = change["old"]
name = change.new
self.remove_layer(old)
tile = basemaps[name]
raster_source = RasterTileSource(
tiles=[tile["url"]],
attribution=tile["attribution"],
tile_size=256,
)
layer = Layer(id=name, source=raster_source, type=LayerType.RASTER)
self.add_layer(layer)
self.set_opacity(name, 1.0)
self.set_visibility(name, True)
checkbox.value = self.layer_dict[dropdown.value]["visible"]
opacity_slider.value = self.layer_dict[dropdown.value]["opacity"]
dropdown.observe(dropdown_event, "value")
def update_layer(change):
self.set_visibility(dropdown.value, checkbox.value)
self.set_opacity(dropdown.value, opacity_slider.value)
checkbox.observe(update_layer, "value")
opacity_slider.observe(update_layer, "value")
return hbox
def add_pmtiles(
self,
url: str,
style: Optional[Dict] = None,
visible: bool = True,
opacity: float = 1.0,
exclude_mask: bool = False,
tooltip: bool = True,
properties: Optional[Dict] = None,
template: Optional[str] = None,
attribution: str = "PMTiles",
fit_bounds: bool = True,
**kwargs: Any,
) -> None:
"""
Adds a PMTiles layer to the map.
Args:
url (str): The URL of the PMTiles file.
style (dict, optional): The CSS style to apply to the layer. Defaults to None.
See https://docs.mapbox.com/style-spec/reference/layers/ for more info.
visible (bool, optional): Whether the layer should be shown initially. Defaults to True.
opacity (float, optional): The opacity of the layer. Defaults to 1.0.
exclude_mask (bool, optional): Whether to exclude the mask layer. Defaults to False.
tooltip (bool, optional): Whether to show tooltips on the layer. Defaults to True.
properties (dict, optional): The properties to use for the tooltips. Defaults to None.
template (str, optional): The template to use for the tooltips. Defaults to None.
attribution (str, optional): The attribution to use for the layer. Defaults to 'PMTiles'.
fit_bounds (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"]
pmtiles_source = {
"type": "vector",
"url": f"pmtiles://{url}",
"attribution": attribution,
}
if style is None:
style = pmtiles_style(url)
if "sources" in style:
source_name = list(style["sources"].keys())[0]
elif "layers" in style:
source_name = style["layers"][0]["source"]
else:
source_name = "source"
self.add_source(source_name, pmtiles_source)
style = replace_hyphens_in_keys(style)
for params in style["layers"]:
if exclude_mask and params.get("source_layer") == "mask":
continue
layer = Layer(**params)
self.add_layer(layer)
self.set_visibility(params["id"], visible)
self.set_opacity(params["id"], opacity)
if tooltip:
self.add_tooltip(params["id"], properties, template)
if fit_bounds:
metadata = pmtiles_metadata(url)
bounds = metadata["bounds"] # [minx, miny, maxx, maxy]
self.fit_bounds([[bounds[0], bounds[1]], [bounds[2], bounds[3]]])
except Exception as e:
print(e)
def add_marker(
self,
marker: Marker = None,
lng_lat: List[Union[float, float]] = [],
popup: Optional[Dict] = {},
options: Optional[Dict] = {},
) -> None:
"""
Adds a marker to the map.
Args:
marker (Marker, optional): A Marker object. Defaults to None.
lng_lat (List[Union[float, float]]): A list of two floats
representing the longitude and latitude of the marker.
popup (Optional[str], optional): The text to display in a popup when
the marker is clicked. Defaults to None.
options (Optional[Dict], optional): A dictionary of options to
customize the marker. Defaults to None.
Returns:
None
"""
if marker is None:
marker = Marker(lng_lat=lng_lat, popup=popup, options=options)
super().add_marker(marker)
def fly_to(
self,
lon: float,
lat: float,
zoom: Optional[float] = None,
speed: Optional[float] = None,
essential: bool = True,
**kwargs: Any,
) -> None:
"""
Makes the map fly to a specified location.
Args:
lon (float): The longitude of the location to fly to.
lat (float): The latitude of the location to fly to.
zoom (Optional[float], optional): The zoom level to use when flying
to the location. Defaults to None.
speed (Optional[float], optional): The speed of the fly animation.
Defaults to None.
essential (bool, optional): Whether the flyTo animation is considered
essential and not affected by prefers-reduced-motion. Defaults to True.
**kwargs: Additional keyword arguments to pass to the flyTo function.
Returns:
None
"""
center = [lon, lat]
kwargs["center"] = center
if zoom is not None:
kwargs["zoom"] = zoom
if speed is not None:
kwargs["speed"] = speed
if essential:
kwargs["essential"] = essential
super().add_call("flyTo", kwargs)
def _read_image(self, image: str) -> Dict[str, Union[int, List[int]]]:
"""
Reads an image from a URL or a local file path and returns a dictionary
with the image data.
Args:
image (str): The URL or local file path to the image.
Returns:
Dict[str, Union[int, List[int]]]: A dictionary with the image width,
height, and flattened data.
Raises:
ValueError: If the image argument is not a string representing a URL
or a local file path.
"""
import os
from PIL import Image
import numpy as np
if isinstance(image, str):
try:
if image.startswith("http"):
image = download_file(
image, temp_file_path(image.split(".")[-1]), quiet=True
)
if os.path.exists(image):
img = Image.open(image)
else:
raise ValueError("The image file does not exist.")
width, height = img.size
# Convert image to numpy array and then flatten it
img_data = np.array(img, dtype="uint8")
if len(img_data.shape) == 3 and img_data.shape[2] == 2:
# Split the grayscale and alpha channels
gray_channel = img_data[:, :, 0]
alpha_channel = img_data[:, :, 1]
# Create the R, G, and B channels by duplicating the grayscale channel
R_channel = gray_channel
G_channel = gray_channel
B_channel = gray_channel
# Combine the channels into an RGBA image
RGBA_image_data = np.stack(
(R_channel, G_channel, B_channel, alpha_channel), axis=-1
)
# Update img_data to the new RGBA image data
img_data = RGBA_image_data
flat_img_data = img_data.flatten()
# Create the image dictionary with the flattened data
image_dict = {
"width": width,
"height": height,
"data": flat_img_data.tolist(), # Convert to list if necessary
}
return image_dict
except Exception as e:
print(e)
return None
else:
raise ValueError("The image must be a URL or a local file path.")
def add_image(
self,
id: str = None,
image: Union[str, Dict] = None,
width: int = None,
height: int = None,
coordinates: List[float] = None,
position: str = None,
icon_size: float = 1.0,
**kwargs: Any,
) -> None:
"""Add an image to the map.
Args:
id (str): The layer ID of the image.
image (Union[str, Dict, np.ndarray]): The URL or local file path to
the image, or a dictionary containing image data, or a numpy
array representing the image.
width (int, optional): The width of the image. Defaults to None.
height (int, optional): The height of the image. Defaults to None.
coordinates (List[float], optional): The longitude and latitude
coordinates to place the image.
position (str, optional): The position of the image. Defaults to None.
Can be one of 'top-right', 'top-left', 'bottom-right', 'bottom-left'.
icon_size (float, optional): The size of the icon. Defaults to 1.0.
Returns:
None
"""
import numpy as np
if id is None:
id = "image"
style = ""
if isinstance(width, int):
style += f"width: {width}px; "
elif isinstance(width, str) and width.endswith("px"):
style += f"width: {width}; "
if isinstance(height, int):
style += f"height: {height}px; "
elif isinstance(height, str) and height.endswith("px"):
style += f"height: {height}; "
if position is not None:
if style == "":
html = f'<img src="{image}">'
else:
html = f'<img src="{image}" style="{style}">'
self.add_html(html, position=position, **kwargs)
else:
if isinstance(image, str):
image_dict = self._read_image(image)
elif isinstance(image, dict):
image_dict = image
elif isinstance(image, np.ndarray):
image_dict = {
"width": width,
"height": height,
"data": image.flatten().tolist(),
}
else:
raise ValueError(
"The image must be a URL, a local file path, or a numpy array."
)
super().add_call("addImage", id, image_dict)
if coordinates is not None:
source = {
"type": "geojson",
"data": {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": coordinates,
},
}
],
},
}
self.add_source("image_point", source)
kwargs["id"] = "image_points"
kwargs["type"] = "symbol"
kwargs["source"] = "image_point"
if "layout" not in kwargs:
kwargs["layout"] = {}
kwargs["layout"]["icon-image"] = id
kwargs["layout"]["icon-size"] = icon_size
self.add_layer(kwargs)
def to_streamlit(
self,
width: Optional[int] = None,
height: Optional[int] = 600,
scrolling: Optional[bool] = False,
**kwargs: Any,
) -> Any:
"""
Convert the map to a Streamlit component.
This function converts the map to a Streamlit component by encoding the
HTML representation of the map as base64 and embedding it in an iframe.
The width, height, and scrolling parameters control the appearance of
the iframe.
Args:
width (Optional[int]): The width of the iframe. If None, the width
will be determined by Streamlit.
height (Optional[int]): The height of the iframe. Default is 600.
scrolling (Optional[bool]): Whether the iframe should be scrollable.
Default is False.
**kwargs (Any): Additional arguments to pass to the Streamlit iframe
function.
Returns:
Any: The Streamlit component.
Raises:
Exception: If there is an error in creating the Streamlit component.
"""
try:
import streamlit.components.v1 as components
import base64
raw_html = self.to_html().encode("utf-8")
raw_html = base64.b64encode(raw_html).decode()
return components.iframe(
f"data:text/html;base64,{raw_html}",
width=width,
height=height,
scrolling=scrolling,
**kwargs,
)
except Exception as e:
raise Exception(e)
def rotate_to(
self, bearing: float, options: Dict[str, Any] = {}, **kwargs: Any
) -> None:
"""
Rotate the map to a specified bearing.
This function rotates the map to a specified bearing. The bearing is specified in degrees
counter-clockwise from true north. If the bearing is not specified, the map will rotate to
true north. Additional options and keyword arguments can be provided to control the rotation.
For more information, see https://maplibre.org/maplibre-gl-js/docs/API/classes/Map/#rotateto
Args:
bearing (float): The bearing to rotate to, in degrees counter-clockwise from true north.
options (Dict[str, Any], optional): Additional options to control the rotation. Defaults to {}.
**kwargs (Any): Additional keyword arguments to control the rotation.
Returns:
None
"""
super().add_call("rotateTo", bearing, options, **kwargs)
def open_geojson(self, **kwargs: Any) -> "widgets.FileUpload":
"""
Creates a file uploader widget to upload a GeoJSON file. When a file is
uploaded, it is written to a temporary file and added to the map.
Args:
**kwargs: Additional keyword arguments to pass to the add_geojson method.
Returns:
widgets.FileUpload: The file uploader widget.
"""
import ipywidgets as widgets
uploader = widgets.FileUpload(
accept=".geojson", # Accept GeoJSON files
multiple=False, # Only single file upload
description="Open GeoJSON",
)
def on_upload(change):
content = uploader.value[0]["content"]
temp_file = temp_file_path(extension=".geojson")
with open(temp_file, "wb") as f:
f.write(content)
self.add_geojson(temp_file, **kwargs)
uploader.observe(on_upload, names="value")
return uploader
def pan_to(
self,
lnglat: List[float],
options: Dict[str, Any] = {},
**kwargs: Any,
) -> None:
"""
Pans the map to a specified location.
This function pans the map to the specified longitude and latitude coordinates.
Additional options and keyword arguments can be provided to control the panning.
For more information, see https://maplibre.org/maplibre-gl-js/docs/API/classes/Map/#panto
Args:
lnglat (List[float, float]): The longitude and latitude coordinates to pan to.
options (Dict[str, Any], optional): Additional options to control the panning. Defaults to {}.
**kwargs (Any): Additional keyword arguments to control the panning.
Returns:
None
"""
super().add_call("panTo", lnglat, options, **kwargs)
def set_pitch(self, pitch: float, **kwargs: Any) -> None:
"""
Sets the pitch of the map.
This function sets the pitch of the map to the specified value. The pitch is the
angle of the camera measured in degrees where 0 is looking straight down, and 60 is
looking towards the horizon. Additional keyword arguments can be provided to control
the pitch. For more information, see https://maplibre.org/maplibre-gl-js/docs/API/classes/Map/#setpitch
Args:
pitch (float): The pitch value to set.
**kwargs (Any): Additional keyword arguments to control the pitch.
Returns:
None
"""
super().add_call("setPitch", pitch, **kwargs)
def jump_to(self, options: Dict[str, Any] = {}, **kwargs: Any) -> None:
"""
Jumps the map to a specified location.
This function jumps the map to the specified location with the specified options.
Additional keyword arguments can be provided to control the jump. For more information,
see https://maplibre.org/maplibre-gl-js/docs/API/classes/Map/#jumpto
Args:
options (Dict[str, Any], optional): Additional options to control the jump. Defaults to {}.
**kwargs (Any): Additional keyword arguments to control the jump.
Returns:
None
"""
super().add_call("jumpTo", options, **kwargs)
def _get_3d_terrain_style(
self,
satellite=True,
exaggeration: float = 1,
token: str = "MAPTILER_KEY",
api_key: Optional[str] = None,
) -> Dict[str, Any]:
"""
Get the 3D terrain style for the map.
This function generates a style dictionary for the map that includes 3D terrain features.
The terrain exaggeration and API key can be specified. If the API key is not provided,
it will be retrieved using the specified token.
Args:
exaggeration (float, optional): The terrain exaggeration. Defaults to 1.
token (str, optional): The token to use to retrieve the API key. Defaults to "MAPTILER_KEY".
api_key (Optional[str], optional): The API key. If not provided, it will be retrieved using the token.
Returns:
Dict[str, Any]: The style dictionary for the map.
Raises:
ValueError: If the API key is not provided and cannot be retrieved using the token.
"""
if api_key is None:
api_key = get_api_key(token)
if api_key is None:
print("An API key is required to use the 3D terrain feature.")
return "dark-matter"
layers = []
if satellite:
layers.append({"id": "satellite", "type": "raster", "source": "satellite"})
layers.append(
{
"id": "hills",
"type": "hillshade",
"source": "hillshadeSource",
"layout": {"visibility": "visible"},
"paint": {"hillshade-shadow-color": "#473B24"},
}
)
style = {
"version": 8,
"sources": {
"satellite": {
"type": "raster",
"tiles": [
"https://api.maptiler.com/tiles/satellite-v2/{z}/{x}/{y}.jpg?key="
+ api_key
],
"tileSize": 256,
"attribution": "© MapTiler",
"maxzoom": 19,
},
"terrainSource": {
"type": "raster-dem",
"url": f"https://api.maptiler.com/tiles/terrain-rgb-v2/tiles.json?key={api_key}",
"tileSize": 256,
},
"hillshadeSource": {
"type": "raster-dem",
"url": f"https://api.maptiler.com/tiles/terrain-rgb-v2/tiles.json?key={api_key}",
"tileSize": 256,
},
},
"layers": layers,
"terrain": {"source": "terrainSource", "exaggeration": exaggeration},
}
return style
def get_style(self):
"""
Get the style of the map.
Returns:
Dict: The style of the map.
"""
if self._style is not None:
if isinstance(self._style, str):
response = requests.get(self._style)
style = response.json()
elif isinstance(self._style, dict):
style = self._style
return style
else:
return {}
def get_style_layers(self, return_ids=False, sorted=True) -> List[str]:
"""
Get the names of the basemap layers.
Returns:
List[str]: The names of the basemap layers.
"""
style = self.get_style()
if "layers" in style:
layers = style["layers"]
if return_ids:
ids = [layer["id"] for layer in layers]
if sorted:
ids.sort()
return ids
else:
return layers
else:
return []
def find_style_layer(self, id: str) -> Optional[Dict]:
"""
Searches for a style layer in the map's current style by its ID and returns it if found.
Args:
id (str): The ID of the style layer to find.
Returns:
Optional[Dict]: The style layer as a dictionary if found, otherwise None.
"""
layers = self.get_style_layers()
for layer in layers:
if layer["id"] == id:
return layer
return None
def zoom_to(self, zoom: float, options: Dict[str, Any] = {}, **kwargs: Any) -> None:
"""
Zooms the map to a specified zoom level.
This function zooms the map to the specified zoom level. Additional options and keyword
arguments can be provided to control the zoom. For more information, see
https://maplibre.org/maplibre-gl-js/docs/API/classes/Map/#zoomto
Args:
zoom (float): The zoom level to zoom to.
options (Dict[str, Any], optional): Additional options to control the zoom. Defaults to {}.
**kwargs (Any): Additional keyword arguments to control the zoom.
Returns:
None
"""
super().add_call("zoomTo", zoom, options, **kwargs)
def find_first_symbol_layer(self) -> Optional[Dict]:
"""
Find the first symbol layer in the map's current style.
Returns:
Optional[Dict]: The first symbol layer as a dictionary if found, otherwise None.
"""
layers = self.get_style_layers()
for layer in layers:
if layer["type"] == "symbol":
return layer
return None
def add_text(
self,
text: str,
fontsize: int = 20,
fontcolor: str = "black",
bold: bool = False,
padding: str = "5px",
bg_color: str = "white",
border_radius: str = "5px",
position: str = "bottom-right",
**kwargs: Any,
) -> None:
"""
Adds text to the map with customizable styling.
This method allows adding a text widget to the map with various styling options such as font size, color,
background color, and more. The text's appearance can be further customized using additional CSS properties
passed through kwargs.
Args:
text (str): The text to add to the map.
fontsize (int, optional): The font size of the text. Defaults to 20.
fontcolor (str, optional): The color of the text. Defaults to "black".
bold (bool, optional): If True, the text will be bold. Defaults to False.
padding (str, optional): The padding around the text. Defaults to "5px".
bg_color (str, optional): The background color of the text widget. Defaults to "white".
To make the background transparent, set this to "transparent".
To make the background half transparent, set this to "rgba(255, 255, 255, 0.5)".
border_radius (str, optional): The border radius of the text widget. Defaults to "5px".
position (str, optional): The position of the text widget on the map. Defaults to "bottom-right".
**kwargs (Any): Additional CSS properties to apply to the text widget.
Returns:
None
"""
from maplibre.controls import InfoBoxControl
if bg_color == "transparent" and "box-shadow" not in kwargs:
kwargs["box-shadow"] = "none"
css_text = f"""font-size: {fontsize}px; color: {fontcolor};
font-weight: {'bold' if bold else 'normal'}; padding: {padding};
background-color: {bg_color}; border-radius: {border_radius};"""
for key, value in kwargs.items():
css_text += f" {key.replace('_', '-')}: {value};"
control = InfoBoxControl(content=text, css_text=css_text)
self.add_control(control, position=position)
def add_html(
self,
html: str,
bg_color: str = "white",
position: str = "bottom-right",
**kwargs: Union[str, int, float],
) -> None:
"""
Add HTML content to the map.
This method allows for the addition of arbitrary HTML content to the map, which can be used to display
custom information or controls. The background color and position of the HTML content can be customized.
Args:
html (str): The HTML content to add.
bg_color (str, optional): The background color of the HTML content. Defaults to "white".
To make the background transparent, set this to "transparent".
To make the background half transparent, set this to "rgba(255, 255, 255, 0.5)".
position (str, optional): The position of the HTML content on the map. Can be one of "top-left",
"top-right", "bottom-left", "bottom-right". Defaults to "bottom-right".
**kwargs: Additional keyword arguments for future use.
Returns:
None
"""
# Check if an HTML string contains local images and convert them to base64.
html = check_html_string(html)
self.add_text(html, position=position, bg_color=bg_color, **kwargs)
def add_legend(
self,
title: str = "Legend",
legend_dict: Optional[Dict[str, str]] = None,
labels: Optional[List[str]] = None,
colors: Optional[List[str]] = None,
fontsize: int = 15,
bg_color: str = "white",
position: str = "bottom-right",
builtin_legend: Optional[str] = None,
**kwargs: Union[str, int, float],
) -> None:
"""
Adds a legend to the map.
This method allows for the addition of a legend to the map. The legend can be customized with a title,
labels, colors, and more. A built-in legend can also be specified.
Args:
title (str, optional): The title of the legend. Defaults to "Legend".
legend_dict (Optional[Dict[str, str]], optional): A dictionary with legend items as keys and colors as values.
If provided, `labels` and `colors` will be ignored. Defaults to None.
labels (Optional[List[str]], optional): A list of legend labels. Defaults to None.
colors (Optional[List[str]], optional): A list of colors corresponding to the labels. Defaults to None.
fontsize (int, optional): The font size of the legend text. Defaults to 15.
bg_color (str, optional): The background color of the legend. Defaults to "white".
To make the background transparent, set this to "transparent".
To make the background half transparent, set this to "rgba(255, 255, 255, 0.5)".
position (str, optional): The position of the legend on the map. Can be one of "top-left",
"top-right", "bottom-left", "bottom-right". Defaults to "bottom-right".
builtin_legend (Optional[str], optional): The name of a built-in legend to use. Defaults to None.
**kwargs: Additional keyword arguments for future use.
Returns:
None
"""
import pkg_resources
from .legends import builtin_legends
pkg_dir = os.path.dirname(
pkg_resources.resource_filename("leafmap", "leafmap.py")
)
legend_template = os.path.join(pkg_dir, "data/template/legend.html")
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 = [
"top-left",
"top-right",
"bottom-left",
"bottom-right",
]
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)
self.add_html(
legend_text,
fontsize=fontsize,
bg_color=bg_color,
position=position,
**kwargs,
)
def add_colorbar(
self,
width: Optional[float] = 3.0,
height: Optional[float] = 0.2,
vmin: Optional[float] = 0,
vmax: Optional[float] = 1.0,
palette: Optional[List[str]] = None,
vis_params: Optional[Dict[str, Union[str, float, int]]] = None,
cmap: Optional[str] = "gray",
discrete: Optional[bool] = False,
label: Optional[str] = None,
label_size: Optional[int] = 10,
label_weight: Optional[str] = "normal",
tick_size: Optional[int] = 8,
bg_color: Optional[str] = "white",
orientation: Optional[str] = "horizontal",
dpi: Optional[Union[str, float]] = "figure",
transparent: Optional[bool] = False,
position: str = "bottom-right",
**kwargs,
) -> str:
"""
Add a colorbar to the map.
This function uses matplotlib to generate a colorbar, saves it as a PNG file, and adds it to the map using
the Map.add_html() method. The colorbar can be customized in various ways including its size, color palette,
label, and orientation.
Args:
width (Optional[float]): Width of the colorbar in inches. Defaults to 3.0.
height (Optional[float]): Height of the colorbar in inches. Defaults to 0.2.
vmin (Optional[float]): Minimum value of the colorbar. Defaults to 0.
vmax (Optional[float]): Maximum value of the colorbar. Defaults to 1.0.
palette (Optional[List[str]]): List of colors or a colormap name for the colorbar. Defaults to None.
vis_params (Optional[Dict[str, Union[str, float, int]]]): Visualization parameters as a dictionary.
cmap (Optional[str]): Matplotlib colormap name. Defaults to "gray".
discrete (Optional[bool]): Whether to create a discrete colorbar. Defaults to False.
label (Optional[str]): Label for the colorbar. Defaults to None.
label_size (Optional[int]): Font size for the colorbar label. Defaults to 10.
label_weight (Optional[str]): Font weight for the colorbar label. Defaults to "normal".
tick_size (Optional[int]): Font size for the colorbar tick labels. Defaults to 8.
bg_color (Optional[str]): Background color for the colorbar. Defaults to "white".
orientation (Optional[str]): Orientation of the colorbar ("vertical" or "horizontal"). Defaults to "horizontal".
dpi (Optional[Union[str, float]]): Resolution in dots per inch. If 'figure', uses the figure's dpi value. Defaults to "figure".
transparent (Optional[bool]): Whether the background is transparent. Defaults to False.
position (str): Position of the colorbar on the map. Defaults to "bottom-right".
**kwargs: Additional keyword arguments passed to matplotlib.pyplot.savefig().
Returns:
str: Path to the generated colorbar image.
"""
if transparent:
bg_color = "transparent"
colorbar = save_colorbar(
None,
width,
height,
vmin,
vmax,
palette,
vis_params,
cmap,
discrete,
label,
label_size,
label_weight,
tick_size,
bg_color,
orientation,
dpi,
transparent,
show_colorbar=False,
)
html = f'<img src="{colorbar}">'
self.add_html(html, bg_color=bg_color, position=position, **kwargs)
def add_layer_control(
self,
layer_ids: Optional[List[str]] = None,
theme: str = "default",
css_text: Optional[str] = None,
position: str = "top-left",
bg_layers: Optional[Union[bool, List[str]]] = False,
) -> None:
"""
Adds a layer control to the map.
This function creates and adds a layer switcher control to the map, allowing users to toggle the visibility
of specified layers. The appearance and functionality of the layer control can be customized with parameters
such as theme, CSS styling, and position on the map.
Args:
layer_ids (Optional[List[str]]): A list of layer IDs to include in the control. If None, all layers
in the map will be included. Defaults to None.
theme (str): The theme for the layer switcher control. Can be "default" or other custom themes. Defaults to "default".
css_text (Optional[str]): Custom CSS text for styling the layer control. If None, a default style will be applied.
Defaults to None.
position (str): The position of the layer control on the map. Can be "top-left", "top-right", "bottom-left",
or "bottom-right". Defaults to "top-left".
bg_layers (bool): If True, background layers will be included in the control. Defaults to False.
Returns:
None
"""
from maplibre.controls import LayerSwitcherControl
if layer_ids is None:
layer_ids = list(self.layer_dict.keys())
if layer_ids[0] == "background":
layer_ids = layer_ids[1:]
if isinstance(bg_layers, list):
layer_ids = bg_layers + layer_ids
elif bg_layers:
background_ids = list(self.style_dict.keys())
layer_ids = background_ids + layer_ids
if css_text is None:
css_text = "padding: 5px; border: 1px solid darkgrey; border-radius: 4px;"
if len(layer_ids) > 0:
control = LayerSwitcherControl(
layer_ids=layer_ids,
theme=theme,
css_text=css_text,
)
self.add_control(control, position=position)
def add_3d_buildings(
self,
name: str = "buildings",
min_zoom: int = 15,
values: List[int] = [0, 200, 400],
colors: List[str] = ["lightgray", "royalblue", "lightblue"],
) -> None:
"""
Adds a 3D buildings layer to the map.
This function creates and adds a 3D buildings layer to the map using fill-extrusion. The buildings' heights
are determined by the 'render_height' property, and their colors are interpolated based on specified values.
The layer is only visible from a certain zoom level, specified by the 'min_zoom' parameter.
Args:
name (str): The name of the 3D buildings layer. Defaults to "buildings".
min_zoom (int): The minimum zoom level at which the 3D buildings will start to be visible. Defaults to 15.
values (List[int]): A list of height values (in meters) used for color interpolation. Defaults to [0, 200, 400].
colors (List[str]): A list of colors corresponding to the 'values' list. Each color is applied to the
building height range defined by the 'values'. Defaults to ["lightgray", "royalblue", "lightblue"].
Raises:
ValueError: If the lengths of 'values' and 'colors' lists do not match.
Returns:
None
"""
MAPTILER_KEY = get_api_key("MAPTILER_KEY")
source = {
"url": f"https://api.maptiler.com/tiles/v3/tiles.json?key={MAPTILER_KEY}",
"type": "vector",
}
if len(values) != len(colors):
raise ValueError("The values and colors must have the same length.")
value_color_pairs = []
for i, value in enumerate(values):
value_color_pairs.append(value)
value_color_pairs.append(colors[i])
layer = {
"id": name,
"source": "openmaptiles",
"source-layer": "building",
"type": "fill-extrusion",
"min-zoom": min_zoom,
"paint": {
"fill-extrusion-color": [
"interpolate",
["linear"],
["get", "render_height"],
]
+ value_color_pairs,
"fill-extrusion-height": [
"interpolate",
["linear"],
["zoom"],
15,
0,
16,
["get", "render_height"],
],
"fill-extrusion-base": [
"case",
[">=", ["get", "zoom"], 16],
["get", "render_min_height"],
0,
],
},
}
self.add_source("openmaptiles", source)
self.add_layer(layer)
def add_video(
self,
urls: Union[str, List[str]],
coordinates: List[List[float]],
layer_id: str = "video",
before_id: Optional[str] = None,
) -> None:
"""
Adds a video layer to the map.
This method allows embedding a video into the map by specifying the video URLs and the geographical coordinates
that the video should cover. The video will be stretched and fitted into the specified coordinates.
Args:
urls (Union[str, List[str]]): A single video URL or a list of video URLs. These URLs must be accessible
from the client's location.
coordinates (List[List[float]]): A list of four coordinates in [longitude, latitude] format, specifying
the corners of the video. The coordinates order should be top-left, top-right, bottom-right, bottom-left.
layer_id (str): The ID for the video layer. Defaults to "video".
before_id (Optional[str]): The ID of an existing layer to insert the new layer before. If None, the layer
will be added on top. Defaults to None.
Returns:
None
"""
if isinstance(urls, str):
urls = [urls]
source = {
"type": "video",
"urls": urls,
"coordinates": coordinates,
}
self.add_source("video_source", source)
layer = {
"id": layer_id,
"type": "raster",
"source": "video_source",
}
self.add_layer(layer, before_id=before_id)
__init__(self, center=(0, 20), zoom=1, pitch=0, bearing=0, style='dark-matter', height='600px', controls={'navigation': 'top-right', 'fullscreen': 'top-right', 'scale': 'bottom-left'}, **kwargs)
special
¶
Create a Map object.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
center |
tuple |
The center of the map (lon, lat). Defaults to (0, 20). |
(0, 20) |
zoom |
float |
The zoom level of the map. Defaults to 1. |
1 |
pitch |
float |
The pitch of the map. Measured in degrees away from the plane of the screen (0-85) Defaults to 0. |
0 |
bearing |
float |
The bearing of the map. Measured in degrees counter-clockwise from north. Defaults to 0. |
0 |
style |
str |
The style of the map. It can be a string or a URL. If it is a string, it must be one of the following: "dark-matter", "positron", "voyager", "positron-nolabels", "dark-matter-nolabels", "voyager-nolabels", or "demotiles". If a MapTiler API key is set, you can also use any of the MapTiler styles, such as aquarelle, backdrop, basic, bright, dataviz, landscape, ocean, openstreetmap, outdoor, satellite, streets, toner, topo, winter, etc. If it is a URL, it must point to a MapLibre style JSON. Defaults to "dark-matter". |
'dark-matter' |
height |
str |
The height of the map. Defaults to "600px". |
'600px' |
controls |
dict |
The controls and their positions on the map. Defaults to {"fullscreen": "top-right", "scale": "bottom-left"}. |
{'navigation': 'top-right', 'fullscreen': 'top-right', 'scale': 'bottom-left'} |
**kwargs |
Any |
Additional keyword arguments that are passed to the MapOptions class. See https://maplibre.org/maplibre-gl-js/docs/API/type-aliases/MapOptions/ for more information. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def __init__(
self,
center: Tuple[float, float] = (0, 20),
zoom: float = 1,
pitch: float = 0,
bearing: float = 0,
style: str = "dark-matter",
height: str = "600px",
controls: Dict[str, str] = {
"navigation": "top-right",
"fullscreen": "top-right",
"scale": "bottom-left",
},
**kwargs: Any,
) -> None:
"""
Create a Map object.
Args:
center (tuple, optional): The center of the map (lon, lat). Defaults
to (0, 20).
zoom (float, optional): The zoom level of the map. Defaults to 1.
pitch (float, optional): The pitch of the map. Measured in degrees
away from the plane of the screen (0-85) Defaults to 0.
bearing (float, optional): The bearing of the map. Measured in degrees
counter-clockwise from north. Defaults to 0.
style (str, optional): The style of the map. It can be a string or a URL.
If it is a string, it must be one of the following: "dark-matter",
"positron", "voyager", "positron-nolabels", "dark-matter-nolabels",
"voyager-nolabels", or "demotiles". If a MapTiler API key is set,
you can also use any of the MapTiler styles, such as aquarelle,
backdrop, basic, bright, dataviz, landscape, ocean, openstreetmap, outdoor,
satellite, streets, toner, topo, winter, etc. If it is a URL, it must point to
a MapLibre style JSON. Defaults to "dark-matter".
height (str, optional): The height of the map. Defaults to "600px".
controls (dict, optional): The controls and their positions on the
map. Defaults to {"fullscreen": "top-right", "scale": "bottom-left"}.
**kwargs: Additional keyword arguments that are passed to the MapOptions class.
See https://maplibre.org/maplibre-gl-js/docs/API/type-aliases/MapOptions/
for more information.
Returns:
None
"""
carto_basemaps = [
"dark-matter",
"positron",
"voyager",
"positron-nolabels",
"dark-matter-nolabels",
"voyager-nolabels",
]
if isinstance(style, str):
if style.startswith("https"):
response = requests.get(style)
if response.status_code != 200:
print(
"The provided style URL is invalid. Falling back to 'dark-matter'."
)
style = "dark-matter"
elif style.startswith("3d-"):
style = maptiler_3d_style(
style=style.replace("3d-", "").lower(),
exaggeration=kwargs.pop("exaggeration", 1),
tile_size=kwargs.pop("tile_size", 512),
hillshade=kwargs.pop("hillshade", True),
)
elif style.lower() in carto_basemaps:
style = construct_carto_basemap_url(style.lower())
elif style == "demotiles":
style = "https://demotiles.maplibre.org/style.json"
elif "background-" in style:
color = style.split("-")[1]
style = background(color)
else:
style = construct_maptiler_style(style)
if style in carto_basemaps:
style = construct_carto_basemap_url(style)
if style is not None:
kwargs["style"] = style
if len(controls) == 0:
kwargs["attribution_control"] = False
map_options = MapOptions(
center=center, zoom=zoom, pitch=pitch, bearing=bearing, **kwargs
)
super().__init__(map_options, height=height)
super().use_message_queue()
for control, position in controls.items():
self.add_control(control, position)
self.layer_dict = {}
self.layer_dict["background"] = {
"layer": Layer(id="background", type=LayerType.BACKGROUND),
"opacity": 1.0,
"visible": True,
"type": "background",
"color": None,
}
self._style = style
self.style_dict = {}
for layer in self.get_style_layers():
self.style_dict[layer["id"]] = layer
self.source_dict = {}
add_3d_buildings(self, name='buildings', min_zoom=15, values=[0, 200, 400], colors=['lightgray', 'royalblue', 'lightblue'])
¶
Adds a 3D buildings layer to the map.
This function creates and adds a 3D buildings layer to the map using fill-extrusion. The buildings' heights are determined by the 'render_height' property, and their colors are interpolated based on specified values. The layer is only visible from a certain zoom level, specified by the 'min_zoom' parameter.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
name |
str |
The name of the 3D buildings layer. Defaults to "buildings". |
'buildings' |
min_zoom |
int |
The minimum zoom level at which the 3D buildings will start to be visible. Defaults to 15. |
15 |
values |
List[int] |
A list of height values (in meters) used for color interpolation. Defaults to [0, 200, 400]. |
[0, 200, 400] |
colors |
List[str] |
A list of colors corresponding to the 'values' list. Each color is applied to the building height range defined by the 'values'. Defaults to ["lightgray", "royalblue", "lightblue"]. |
['lightgray', 'royalblue', 'lightblue'] |
Exceptions:
| Type | Description |
|---|---|
ValueError |
If the lengths of 'values' and 'colors' lists do not match. |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_3d_buildings(
self,
name: str = "buildings",
min_zoom: int = 15,
values: List[int] = [0, 200, 400],
colors: List[str] = ["lightgray", "royalblue", "lightblue"],
) -> None:
"""
Adds a 3D buildings layer to the map.
This function creates and adds a 3D buildings layer to the map using fill-extrusion. The buildings' heights
are determined by the 'render_height' property, and their colors are interpolated based on specified values.
The layer is only visible from a certain zoom level, specified by the 'min_zoom' parameter.
Args:
name (str): The name of the 3D buildings layer. Defaults to "buildings".
min_zoom (int): The minimum zoom level at which the 3D buildings will start to be visible. Defaults to 15.
values (List[int]): A list of height values (in meters) used for color interpolation. Defaults to [0, 200, 400].
colors (List[str]): A list of colors corresponding to the 'values' list. Each color is applied to the
building height range defined by the 'values'. Defaults to ["lightgray", "royalblue", "lightblue"].
Raises:
ValueError: If the lengths of 'values' and 'colors' lists do not match.
Returns:
None
"""
MAPTILER_KEY = get_api_key("MAPTILER_KEY")
source = {
"url": f"https://api.maptiler.com/tiles/v3/tiles.json?key={MAPTILER_KEY}",
"type": "vector",
}
if len(values) != len(colors):
raise ValueError("The values and colors must have the same length.")
value_color_pairs = []
for i, value in enumerate(values):
value_color_pairs.append(value)
value_color_pairs.append(colors[i])
layer = {
"id": name,
"source": "openmaptiles",
"source-layer": "building",
"type": "fill-extrusion",
"min-zoom": min_zoom,
"paint": {
"fill-extrusion-color": [
"interpolate",
["linear"],
["get", "render_height"],
]
+ value_color_pairs,
"fill-extrusion-height": [
"interpolate",
["linear"],
["zoom"],
15,
0,
16,
["get", "render_height"],
],
"fill-extrusion-base": [
"case",
[">=", ["get", "zoom"], 16],
["get", "render_min_height"],
0,
],
},
}
self.add_source("openmaptiles", source)
self.add_layer(layer)
add_basemap(self, basemap=None, opacity=1.0, visible=True, attribution=None, **kwargs)
¶
Adds a basemap to the map.
This method adds a basemap to the map. The basemap can be a string from predefined basemaps, an instance of xyzservices.TileProvider, or a key from the basemaps dictionary.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
basemap |
str or TileProvider |
The basemap to add. Can be one of the predefined strings, an instance of xyzservices.TileProvider, or a key from the basemaps dictionary. Defaults to None, which adds the basemap widget. |
None |
opacity |
float |
The opacity of the basemap. Defaults to 1.0. |
1.0 |
visible |
bool |
Whether the basemap is visible or not. Defaults to True. |
True |
attribution |
str |
The attribution text to display for the basemap. If None, the attribution text is taken from the basemap or the TileProvider. Defaults to None. |
None |
**kwargs |
Any |
Additional keyword arguments that are passed to the RasterTileSource class. See https://bit.ly/4erD2MQ for more information. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Exceptions:
| Type | Description |
|---|---|
ValueError |
If the basemap is not one of the predefined strings, not an instance of TileProvider, and not a key from the basemaps dictionary. |
Source code in leafmap/maplibregl.py
def add_basemap(
self,
basemap: Union[str, xyzservices.TileProvider] = None,
opacity: float = 1.0,
visible: bool = True,
attribution: Optional[str] = None,
**kwargs: Any,
) -> None:
"""
Adds a basemap to the map.
This method adds a basemap to the map. The basemap can be a string from
predefined basemaps, an instance of xyzservices.TileProvider, or a key
from the basemaps dictionary.
Args:
basemap (str or TileProvider, optional): The basemap to add. Can be
one of the predefined strings, an instance of xyzservices.TileProvider,
or a key from the basemaps dictionary. Defaults to None, which adds
the basemap widget.
opacity (float, optional): The opacity of the basemap. Defaults to 1.0.
visible (bool, optional): Whether the basemap is visible or not.
Defaults to True.
attribution (str, optional): The attribution text to display for the
basemap. If None, the attribution text is taken from the basemap
or the TileProvider. Defaults to None.
**kwargs: Additional keyword arguments that are passed to the
RasterTileSource class. See https://bit.ly/4erD2MQ for more information.
Returns:
None
Raises:
ValueError: If the basemap is not one of the predefined strings,
not an instance of TileProvider, and not a key from the basemaps dictionary.
"""
if basemap is None:
return self._basemap_widget()
map_dict = {
"ROADMAP": "Google Maps",
"SATELLITE": "Google Satellite",
"TERRAIN": "Google Terrain",
"HYBRID": "Google Hybrid",
}
name = basemap
url = None
max_zoom = 30
min_zoom = 0
if isinstance(basemap, str) and basemap.upper() in map_dict:
layer = get_google_map(basemap.upper(), **kwargs)
url = layer.url
name = layer.name
attribution = layer.attribution
elif isinstance(basemap, xyzservices.TileProvider):
name = basemap.name
url = basemap.build_url()
if attribution is None:
attribution = basemap.attribution
if "max_zoom" in basemap.keys():
max_zoom = basemap["max_zoom"]
if "min_zoom" in basemap.keys():
min_zoom = basemap["min_zoom"]
elif basemap in basemaps:
url = basemaps[basemap]["url"]
if attribution is None:
attribution = basemaps[basemap]["attribution"]
if "max_zoom" in basemaps[basemap]:
max_zoom = basemaps[basemap]["max_zoom"]
if "min_zoom" in basemaps[basemap]:
min_zoom = basemaps[basemap]["min_zoom"]
else:
print(
"Basemap can only be one of the following:\n {}".format(
"\n ".join(basemaps.keys())
)
)
return
raster_source = RasterTileSource(
tiles=[url],
attribution=attribution,
max_zoom=max_zoom,
min_zoom=min_zoom,
tile_size=256,
**kwargs,
)
layer = Layer(id=name, source=raster_source, type=LayerType.RASTER)
self.add_layer(layer)
self.set_opacity(name, opacity)
self.set_visibility(name, visible)
add_cog_layer(self, url, name=None, attribution='', opacity=1.0, visible=True, bands=None, titiler_endpoint='https://titiler.xyz', fit_bounds=True, before_id=None, **kwargs)
¶
Adds a Cloud Optimized Geotiff (COG) TileLayer to the map.
This method adds a COG TileLayer to the map. The COG TileLayer is created from the specified URL, and it is added to the map with the specified name, attribution, opacity, visibility, and bands.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
url |
str |
The URL of the COG tile layer. |
required |
name |
str |
The name to use for the layer. If None, a random name is generated. Defaults to None. |
None |
attribution |
str |
The attribution to use for the layer. Defaults to ''. |
'' |
opacity |
float |
The opacity of the layer. Defaults to 1.0. |
1.0 |
visible |
bool |
Whether the layer should be visible by default. Defaults to True. |
True |
bands |
list |
A list of bands to use for the layer. Defaults to None. |
None |
titiler_endpoint |
str |
The endpoint of the titiler service. Defaults to "https://titiler.xyz". |
'https://titiler.xyz' |
fit_bounds |
bool |
Whether to adjust the viewport of the map to fit the bounds of the layer. Defaults to True. |
True |
**kwargs |
Any |
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
|
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_cog_layer(
self,
url: str,
name: Optional[str] = None,
attribution: str = "",
opacity: float = 1.0,
visible: bool = True,
bands: Optional[List[int]] = None,
titiler_endpoint: str = "https://titiler.xyz",
fit_bounds: bool = True,
before_id: Optional[str] = None,
**kwargs: Any,
) -> None:
"""
Adds a Cloud Optimized Geotiff (COG) TileLayer to the map.
This method adds a COG TileLayer to the map. The COG TileLayer is created
from the specified URL, and it is added to the map with the specified name,
attribution, opacity, visibility, and bands.
Args:
url (str): The URL of the COG tile layer.
name (str, optional): The name to use for the layer. If None, a
random name is generated. Defaults to None.
attribution (str, optional): The attribution to use for the layer.
Defaults to ''.
opacity (float, optional): The opacity of the layer. Defaults to 1.0.
visible (bool, optional): Whether the layer should be visible by default.
Defaults to True.
bands (list, optional): A list of bands to use for the layer.
Defaults to None.
titiler_endpoint (str, optional): The endpoint of the titiler service.
Defaults to "https://titiler.xyz".
fit_bounds (bool, optional): Whether to adjust the viewport of
the map to fit the bounds of the layer. 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"]`.
Returns:
None
"""
import numpy as np
if "nodata" not in kwargs:
kwargs["nodata"] = np.nan
if name is None:
name = "COG_" + random_string()
tile_url = cog_tile(url, bands, titiler_endpoint, **kwargs)
bounds = cog_bounds(url, titiler_endpoint)
self.add_tile_layer(
tile_url, name, attribution, opacity, visible, before_id=before_id
)
if fit_bounds:
self.fit_bounds([[bounds[0], bounds[1]], [bounds[2], bounds[3]]])
add_colorbar(self, width=3.0, height=0.2, vmin=0, vmax=1.0, palette=None, vis_params=None, cmap='gray', discrete=False, label=None, label_size=10, label_weight='normal', tick_size=8, bg_color='white', orientation='horizontal', dpi='figure', transparent=False, position='bottom-right', **kwargs)
¶
Add a colorbar to the map.
This function uses matplotlib to generate a colorbar, saves it as a PNG file, and adds it to the map using the Map.add_html() method. The colorbar can be customized in various ways including its size, color palette, label, and orientation.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
width |
Optional[float] |
Width of the colorbar in inches. Defaults to 3.0. |
3.0 |
height |
Optional[float] |
Height of the colorbar in inches. Defaults to 0.2. |
0.2 |
vmin |
Optional[float] |
Minimum value of the colorbar. Defaults to 0. |
0 |
vmax |
Optional[float] |
Maximum value of the colorbar. Defaults to 1.0. |
1.0 |
palette |
Optional[List[str]] |
List of colors or a colormap name for the colorbar. Defaults to None. |
None |
vis_params |
Optional[Dict[str, Union[str, float, int]]] |
Visualization parameters as a dictionary. |
None |
cmap |
Optional[str] |
Matplotlib colormap name. Defaults to "gray". |
'gray' |
discrete |
Optional[bool] |
Whether to create a discrete colorbar. Defaults to False. |
False |
label |
Optional[str] |
Label for the colorbar. Defaults to None. |
None |
label_size |
Optional[int] |
Font size for the colorbar label. Defaults to 10. |
10 |
label_weight |
Optional[str] |
Font weight for the colorbar label. Defaults to "normal". |
'normal' |
tick_size |
Optional[int] |
Font size for the colorbar tick labels. Defaults to 8. |
8 |
bg_color |
Optional[str] |
Background color for the colorbar. Defaults to "white". |
'white' |
orientation |
Optional[str] |
Orientation of the colorbar ("vertical" or "horizontal"). Defaults to "horizontal". |
'horizontal' |
dpi |
Optional[Union[str, float]] |
Resolution in dots per inch. If 'figure', uses the figure's dpi value. Defaults to "figure". |
'figure' |
transparent |
Optional[bool] |
Whether the background is transparent. Defaults to False. |
False |
position |
str |
Position of the colorbar on the map. Defaults to "bottom-right". |
'bottom-right' |
**kwargs |
Additional keyword arguments passed to matplotlib.pyplot.savefig(). |
{} |
Returns:
| Type | Description |
|---|---|
str |
Path to the generated colorbar image. |
Source code in leafmap/maplibregl.py
def add_colorbar(
self,
width: Optional[float] = 3.0,
height: Optional[float] = 0.2,
vmin: Optional[float] = 0,
vmax: Optional[float] = 1.0,
palette: Optional[List[str]] = None,
vis_params: Optional[Dict[str, Union[str, float, int]]] = None,
cmap: Optional[str] = "gray",
discrete: Optional[bool] = False,
label: Optional[str] = None,
label_size: Optional[int] = 10,
label_weight: Optional[str] = "normal",
tick_size: Optional[int] = 8,
bg_color: Optional[str] = "white",
orientation: Optional[str] = "horizontal",
dpi: Optional[Union[str, float]] = "figure",
transparent: Optional[bool] = False,
position: str = "bottom-right",
**kwargs,
) -> str:
"""
Add a colorbar to the map.
This function uses matplotlib to generate a colorbar, saves it as a PNG file, and adds it to the map using
the Map.add_html() method. The colorbar can be customized in various ways including its size, color palette,
label, and orientation.
Args:
width (Optional[float]): Width of the colorbar in inches. Defaults to 3.0.
height (Optional[float]): Height of the colorbar in inches. Defaults to 0.2.
vmin (Optional[float]): Minimum value of the colorbar. Defaults to 0.
vmax (Optional[float]): Maximum value of the colorbar. Defaults to 1.0.
palette (Optional[List[str]]): List of colors or a colormap name for the colorbar. Defaults to None.
vis_params (Optional[Dict[str, Union[str, float, int]]]): Visualization parameters as a dictionary.
cmap (Optional[str]): Matplotlib colormap name. Defaults to "gray".
discrete (Optional[bool]): Whether to create a discrete colorbar. Defaults to False.
label (Optional[str]): Label for the colorbar. Defaults to None.
label_size (Optional[int]): Font size for the colorbar label. Defaults to 10.
label_weight (Optional[str]): Font weight for the colorbar label. Defaults to "normal".
tick_size (Optional[int]): Font size for the colorbar tick labels. Defaults to 8.
bg_color (Optional[str]): Background color for the colorbar. Defaults to "white".
orientation (Optional[str]): Orientation of the colorbar ("vertical" or "horizontal"). Defaults to "horizontal".
dpi (Optional[Union[str, float]]): Resolution in dots per inch. If 'figure', uses the figure's dpi value. Defaults to "figure".
transparent (Optional[bool]): Whether the background is transparent. Defaults to False.
position (str): Position of the colorbar on the map. Defaults to "bottom-right".
**kwargs: Additional keyword arguments passed to matplotlib.pyplot.savefig().
Returns:
str: Path to the generated colorbar image.
"""
if transparent:
bg_color = "transparent"
colorbar = save_colorbar(
None,
width,
height,
vmin,
vmax,
palette,
vis_params,
cmap,
discrete,
label,
label_size,
label_weight,
tick_size,
bg_color,
orientation,
dpi,
transparent,
show_colorbar=False,
)
html = f'<img src="{colorbar}">'
self.add_html(html, bg_color=bg_color, position=position, **kwargs)
add_control(self, control, position='top-right', **kwargs)
¶
Adds a control to the map.
This method adds a control to the map. The control can be one of the following: 'scale', 'fullscreen', 'geolocate', 'navigation', "attribution", and "draw". If the control is a string, it is converted to the corresponding control object. If the control is not a string, it is assumed to be a control object.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
control |
str or object |
The control to add to the map. Can be one of the following: 'scale', 'fullscreen', 'geolocate', 'navigation', "attribution", and "draw". |
required |
position |
str |
The position of the control. Defaults to "top-right". |
'top-right' |
**kwargs |
Any |
Additional keyword arguments that are passed to the control object. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Exceptions:
| Type | Description |
|---|---|
ValueError |
If the control is a string and is not one of the following: 'scale', 'fullscreen', 'geolocate', 'navigation', "attribution". |
Source code in leafmap/maplibregl.py
def add_control(
self, control: Union[str, Any], position: str = "top-right", **kwargs: Any
) -> None:
"""
Adds a control to the map.
This method adds a control to the map. The control can be one of the
following: 'scale', 'fullscreen', 'geolocate', 'navigation', "attribution",
and "draw". If the control is a string, it is converted to the
corresponding control object. If the control is not a string, it is
assumed to be a control object.
Args:
control (str or object): The control to add to the map. Can be one
of the following: 'scale', 'fullscreen', 'geolocate', 'navigation',
"attribution", and "draw".
position (str, optional): The position of the control. Defaults to "top-right".
**kwargs: Additional keyword arguments that are passed to the control object.
Returns:
None
Raises:
ValueError: If the control is a string and is not one of the
following: 'scale', 'fullscreen', 'geolocate', 'navigation', "attribution".
"""
if isinstance(control, str):
control = control.lower()
if control == "scale":
control = ScaleControl(**kwargs)
elif control == "fullscreen":
control = FullscreenControl(**kwargs)
elif control == "geolocate":
control = GeolocateControl(**kwargs)
elif control == "navigation":
control = NavigationControl(**kwargs)
elif control == "attribution":
control = AttributionControl(**kwargs)
elif control == "draw":
self.add_draw_control(position=position, **kwargs)
elif control == "layers":
self.add_layer_control(position=position, **kwargs)
return
else:
print(
"Control can only be one of the following: 'scale', 'fullscreen', 'geolocate', 'navigation', and 'draw'."
)
return
super().add_control(control, position)
add_draw_control(self, options=None, position='top-left', geojson=None, **kwargs)
¶
Adds a drawing control to the map.
This method enables users to add interactive drawing controls to the map, allowing for the creation, editing, and deletion of geometric shapes on the map. The options, position, and initial GeoJSON can be customized.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
options |
Optional[Dict[str, Any]] |
Configuration options for the drawing control. Defaults to None. |
None |
position |
str |
The position of the control on the map. Defaults to "top-left". |
'top-left' |
geojson |
Optional[Dict[str, Any]] |
Initial GeoJSON data to load into the drawing control. Defaults to None. |
None |
**kwargs |
Any |
Additional keyword arguments to be passed to the drawing control. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_draw_control(
self,
options: Optional[Dict[str, Any]] = None,
position: str = "top-left",
geojson: Optional[Dict[str, Any]] = None,
**kwargs: Any,
) -> None:
"""
Adds a drawing control to the map.
This method enables users to add interactive drawing controls to the map,
allowing for the creation, editing, and deletion of geometric shapes on
the map. The options, position, and initial GeoJSON can be customized.
Args:
options (Optional[Dict[str, Any]]): Configuration options for the
drawing control. Defaults to None.
position (str): The position of the control on the map. Defaults
to "top-left".
geojson (Optional[Dict[str, Any]]): Initial GeoJSON data to load
into the drawing control. Defaults to None.
**kwargs (Any): Additional keyword arguments to be passed to the
drawing control.
Returns:
None
"""
super().add_mapbox_draw(
options=options, position=position, geojson=geojson, **kwargs
)
add_ee_layer(self, ee_object=None, vis_params={}, asset_id=None, name=None, opacity=1.0, attribution='Google Earth Engine', visible=True, before_id=None, ee_initialize=False, **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 |
|---|---|---|---|
ee_object |
object |
The Earth Engine object to display. |
None |
vis_params |
dict |
Visualization parameters. For example, {'min': 0, 'max': 100}. |
{} |
asset_id |
str |
The ID of the Earth Engine asset. |
None |
name |
str |
The name of the tile layer. If not provided, the asset ID will be used. Default is None. |
None |
opacity |
float |
The opacity of the tile layer (0 to 1). Default is 1. |
1.0 |
attribution |
str |
The attribution text to be displayed. Default is "Google Earth Engine". |
'Google Earth Engine' |
visible |
bool |
Whether the tile layer should be shown on the map. Default is True. |
True |
before_id |
str |
The ID of an existing layer before which the new layer should be inserted. |
None |
ee_initialize |
bool |
Whether to initialize the Earth Engine |
False |
**kwargs |
Additional keyword arguments to be passed to the underlying
|
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_ee_layer(
self,
ee_object=None,
vis_params={},
asset_id: str = None,
name: str = None,
opacity: float = 1.0,
attribution: str = "Google Earth Engine",
visible: bool = True,
before_id: Optional[str] = None,
ee_initialize: bool = False,
**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:
ee_object (object): The Earth Engine object to display.
vis_params (dict): Visualization parameters. For example, {'min': 0, 'max': 100}.
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.
opacity (float, optional): The opacity of the tile layer (0 to 1).
Default is 1.
attribution (str, optional): The attribution text to be displayed.
Default is "Google Earth Engine".
visible (bool, optional): Whether the tile layer should be shown on
the map. Default is True.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
ee_initialize (bool, optional): Whether to initialize the Earth Engine
**kwargs: Additional keyword arguments to be passed to the underlying
`add_tile_layer` method.
Returns:
None
"""
import pandas as pd
if isinstance(asset_id, str):
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,
opacity=opacity,
visible=visible,
before_id=before_id,
**kwargs,
)
else:
print(f"The provided EE tile layer {asset_id} does not exist.")
elif ee_object is not None:
try:
import geemap
from geemap.ee_tile_layers import _get_tile_url_format
if ee_initialize:
geemap.ee_initialize()
url = _get_tile_url_format(ee_object, vis_params)
if name is None:
name = "EE Layer"
self.add_tile_layer(
url,
name,
attribution=attribution,
opacity=opacity,
visible=visible,
before_id=before_id,
**kwargs,
)
except Exception as e:
print(e)
print(
"Please install the `geemap` package to use the `add_ee_layer` function."
)
return
add_gdf(self, gdf, layer_type=None, filter=None, paint=None, name=None, fit_bounds=True, visible=True, before_id=None, source_args={}, **kwargs)
¶
Adds a vector layer to the map.
This method adds a GeoDataFrame to the map as a vector layer.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
gdf |
gpd.GeoDataFrame |
The GeoDataFrame to add to the map. |
required |
layer_type |
str |
The type of the layer. If None, the type is inferred from the GeoJSON data. |
None |
filter |
dict |
The filter to apply to the layer. If None, no filter is applied. |
None |
paint |
dict |
The paint properties to apply to the layer. If None, no paint properties are applied. |
None |
name |
str |
The name of the layer. If None, a random name is generated. |
None |
fit_bounds |
bool |
Whether to adjust the viewport of the map to fit the bounds of the GeoJSON data. Defaults to True. |
True |
visible |
bool |
Whether the layer is visible or not. Defaults to True. |
True |
before_id |
str |
The ID of an existing layer before which the new layer should be inserted. |
None |
source_args |
dict |
Additional keyword arguments that are passed to the GeoJSONSource class. |
{} |
**kwargs |
Any |
Additional keyword arguments that are passed to the Layer class. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Exceptions:
| Type | Description |
|---|---|
ValueError |
If the data is not a URL or a GeoJSON dictionary. |
Source code in leafmap/maplibregl.py
def add_gdf(
self,
gdf: gpd.GeoDataFrame,
layer_type: Optional[str] = None,
filter: Optional[Dict] = None,
paint: Optional[Dict] = None,
name: Optional[str] = None,
fit_bounds: bool = True,
visible: bool = True,
before_id: Optional[str] = None,
source_args: Dict = {},
**kwargs: Any,
) -> None:
"""
Adds a vector layer to the map.
This method adds a GeoDataFrame to the map as a vector layer.
Args:
gdf (gpd.GeoDataFrame): The GeoDataFrame to add to the map.
layer_type (str, optional): The type of the layer. If None, the type
is inferred from the GeoJSON data.
filter (dict, optional): The filter to apply to the layer. If None,
no filter is applied.
paint (dict, optional): The paint properties to apply to the layer.
If None, no paint properties are applied.
name (str, optional): The name of the layer. If None, a random name
is generated.
fit_bounds (bool, optional): Whether to adjust the viewport of the
map to fit the bounds of the GeoJSON data. Defaults to True.
visible (bool, optional): Whether the layer is visible or not.
Defaults to True.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
source_args (dict, optional): Additional keyword arguments that are
passed to the GeoJSONSource class.
**kwargs: Additional keyword arguments that are passed to the Layer class.
Returns:
None
Raises:
ValueError: If the data is not a URL or a GeoJSON dictionary.
"""
if not isinstance(gdf, gpd.GeoDataFrame):
raise ValueError("The data must be a GeoDataFrame.")
geojson = gdf.__geo_interface__
self.add_geojson(
geojson,
layer_type=layer_type,
filter=filter,
paint=paint,
name=name,
fit_bounds=fit_bounds,
visible=visible,
before_id=before_id,
source_args=source_args,
**kwargs,
)
add_geojson(self, data, layer_type=None, filter=None, paint=None, name=None, fit_bounds=True, visible=True, before_id=None, source_args={}, **kwargs)
¶
Adds a GeoJSON layer to the map.
This method adds a GeoJSON layer to the map. The GeoJSON data can be a URL to a GeoJSON file or a GeoJSON dictionary. If a name is provided, it is used as the key to store the layer in the layer dictionary. Otherwise, a random name is generated.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
data |
str | dict |
The GeoJSON data. This can be a URL to a GeoJSON file or a GeoJSON dictionary. |
required |
layer_type |
str |
The type of the layer. It can be one of the following: 'circle', 'fill', 'fill-extrusion', 'line', 'symbol', 'raster', 'background', 'heatmap', 'hillshade'. If None, the type is inferred from the GeoJSON data. |
None |
filter |
dict |
The filter to apply to the layer. If None, no filter is applied. |
None |
paint |
dict |
The paint properties to apply to the layer. If None, no paint properties are applied. |
None |
name |
str |
The name of the layer. If None, a random name is generated. |
None |
fit_bounds |
bool |
Whether to adjust the viewport of the map to fit the bounds of the GeoJSON data. Defaults to True. |
True |
visible |
bool |
Whether the layer is visible or not. Defaults to True. |
True |
before_id |
str |
The ID of an existing layer before which the new layer should be inserted. |
None |
source_args |
dict |
Additional keyword arguments that are passed to the GeoJSONSource class. |
{} |
**kwargs |
Any |
Additional keyword arguments that are passed to the Layer class. See https://maplibre.org/maplibre-style-spec/layers/ for more info. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Exceptions:
| Type | Description |
|---|---|
ValueError |
If the data is not a URL or a GeoJSON dictionary. |
Source code in leafmap/maplibregl.py
def add_geojson(
self,
data: Union[str, Dict],
layer_type: Optional[str] = None,
filter: Optional[Dict] = None,
paint: Optional[Dict] = None,
name: Optional[str] = None,
fit_bounds: bool = True,
visible: bool = True,
before_id: Optional[str] = None,
source_args: Dict = {},
**kwargs: Any,
) -> None:
"""
Adds a GeoJSON layer to the map.
This method adds a GeoJSON layer to the map. The GeoJSON data can be a
URL to a GeoJSON file or a GeoJSON dictionary. If a name is provided, it
is used as the key to store the layer in the layer dictionary. Otherwise,
a random name is generated.
Args:
data (str | dict): The GeoJSON data. This can be a URL to a GeoJSON
file or a GeoJSON dictionary.
layer_type (str, optional): The type of the layer. It can be one of
the following: 'circle', 'fill', 'fill-extrusion', 'line', 'symbol',
'raster', 'background', 'heatmap', 'hillshade'. If None, the type
is inferred from the GeoJSON data.
filter (dict, optional): The filter to apply to the layer. If None,
no filter is applied.
paint (dict, optional): The paint properties to apply to the layer.
If None, no paint properties are applied.
name (str, optional): The name of the layer. If None, a random name
is generated.
fit_bounds (bool, optional): Whether to adjust the viewport of the
map to fit the bounds of the GeoJSON data. Defaults to True.
visible (bool, optional): Whether the layer is visible or not.
Defaults to True.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
source_args (dict, optional): Additional keyword arguments that are
passed to the GeoJSONSource class.
**kwargs: Additional keyword arguments that are passed to the Layer class.
See https://maplibre.org/maplibre-style-spec/layers/ for more info.
Returns:
None
Raises:
ValueError: If the data is not a URL or a GeoJSON dictionary.
"""
import os
bounds = None
geom_type = None
if isinstance(data, str):
if os.path.isfile(data) or data.startswith("http"):
data = gpd.read_file(data).__geo_interface__
bounds = get_bounds(data)
source = GeoJSONSource(data=data, **source_args)
else:
raise ValueError("The data must be a URL or a GeoJSON dictionary.")
elif isinstance(data, dict):
source = GeoJSONSource(data=data, **source_args)
bounds = get_bounds(data)
else:
raise ValueError("The data must be a URL or a GeoJSON dictionary.")
if name is None:
name = "geojson"
if filter is not None:
kwargs["filter"] = filter
if paint is None:
if "features" in data:
geom_type = data["features"][0]["geometry"]["type"]
elif "geometry" in data:
geom_type = data["geometry"]["type"]
if geom_type in ["Point", "MultiPoint"]:
if layer_type is None:
layer_type = "circle"
paint = {
"circle-radius": 5,
"circle-color": "#3388ff",
"circle-stroke-color": "#ffffff",
"circle-stroke-width": 1,
}
elif geom_type in ["LineString", "MultiLineString"]:
if layer_type is None:
layer_type = "line"
paint = {"line-color": "#3388ff", "line-width": 2}
elif geom_type in ["Polygon", "MultiPolygon"]:
if layer_type is None:
layer_type = "fill"
paint = {
"fill-color": "#3388ff",
"fill-opacity": 0.8,
"fill-outline-color": "#ffffff",
}
if paint is not None:
kwargs["paint"] = paint
layer = Layer(
id=name,
type=layer_type,
source=source,
**kwargs,
)
self.add_layer(layer, before_id=before_id, name=name)
self.add_popup(name)
if fit_bounds and bounds is not None:
self.fit_bounds(bounds)
self.set_visibility(name, visible)
if isinstance(paint, dict) and f"{layer_type}-opacity" in paint:
self.set_opacity(name, paint[f"{layer_type}-opacity"])
else:
self.set_opacity(name, 1.0)
add_html(self, html, bg_color='white', position='bottom-right', **kwargs)
¶
Add HTML content to the map.
This method allows for the addition of arbitrary HTML content to the map, which can be used to display custom information or controls. The background color and position of the HTML content can be customized.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
html |
str |
The HTML content to add. |
required |
bg_color |
str |
The background color of the HTML content. Defaults to "white". To make the background transparent, set this to "transparent". To make the background half transparent, set this to "rgba(255, 255, 255, 0.5)". |
'white' |
position |
str |
The position of the HTML content on the map. Can be one of "top-left", "top-right", "bottom-left", "bottom-right". Defaults to "bottom-right". |
'bottom-right' |
**kwargs |
Union[str, int, float] |
Additional keyword arguments for future use. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_html(
self,
html: str,
bg_color: str = "white",
position: str = "bottom-right",
**kwargs: Union[str, int, float],
) -> None:
"""
Add HTML content to the map.
This method allows for the addition of arbitrary HTML content to the map, which can be used to display
custom information or controls. The background color and position of the HTML content can be customized.
Args:
html (str): The HTML content to add.
bg_color (str, optional): The background color of the HTML content. Defaults to "white".
To make the background transparent, set this to "transparent".
To make the background half transparent, set this to "rgba(255, 255, 255, 0.5)".
position (str, optional): The position of the HTML content on the map. Can be one of "top-left",
"top-right", "bottom-left", "bottom-right". Defaults to "bottom-right".
**kwargs: Additional keyword arguments for future use.
Returns:
None
"""
# Check if an HTML string contains local images and convert them to base64.
html = check_html_string(html)
self.add_text(html, position=position, bg_color=bg_color, **kwargs)
add_image(self, id=None, image=None, width=None, height=None, coordinates=None, position=None, icon_size=1.0, **kwargs)
¶
Add an image to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
id |
str |
The layer ID of the image. |
None |
image |
Union[str, Dict, np.ndarray] |
The URL or local file path to the image, or a dictionary containing image data, or a numpy array representing the image. |
None |
width |
int |
The width of the image. Defaults to None. |
None |
height |
int |
The height of the image. Defaults to None. |
None |
coordinates |
List[float] |
The longitude and latitude coordinates to place the image. |
None |
position |
str |
The position of the image. Defaults to None. Can be one of 'top-right', 'top-left', 'bottom-right', 'bottom-left'. |
None |
icon_size |
float |
The size of the icon. Defaults to 1.0. |
1.0 |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_image(
self,
id: str = None,
image: Union[str, Dict] = None,
width: int = None,
height: int = None,
coordinates: List[float] = None,
position: str = None,
icon_size: float = 1.0,
**kwargs: Any,
) -> None:
"""Add an image to the map.
Args:
id (str): The layer ID of the image.
image (Union[str, Dict, np.ndarray]): The URL or local file path to
the image, or a dictionary containing image data, or a numpy
array representing the image.
width (int, optional): The width of the image. Defaults to None.
height (int, optional): The height of the image. Defaults to None.
coordinates (List[float], optional): The longitude and latitude
coordinates to place the image.
position (str, optional): The position of the image. Defaults to None.
Can be one of 'top-right', 'top-left', 'bottom-right', 'bottom-left'.
icon_size (float, optional): The size of the icon. Defaults to 1.0.
Returns:
None
"""
import numpy as np
if id is None:
id = "image"
style = ""
if isinstance(width, int):
style += f"width: {width}px; "
elif isinstance(width, str) and width.endswith("px"):
style += f"width: {width}; "
if isinstance(height, int):
style += f"height: {height}px; "
elif isinstance(height, str) and height.endswith("px"):
style += f"height: {height}; "
if position is not None:
if style == "":
html = f'<img src="{image}">'
else:
html = f'<img src="{image}" style="{style}">'
self.add_html(html, position=position, **kwargs)
else:
if isinstance(image, str):
image_dict = self._read_image(image)
elif isinstance(image, dict):
image_dict = image
elif isinstance(image, np.ndarray):
image_dict = {
"width": width,
"height": height,
"data": image.flatten().tolist(),
}
else:
raise ValueError(
"The image must be a URL, a local file path, or a numpy array."
)
super().add_call("addImage", id, image_dict)
if coordinates is not None:
source = {
"type": "geojson",
"data": {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": coordinates,
},
}
],
},
}
self.add_source("image_point", source)
kwargs["id"] = "image_points"
kwargs["type"] = "symbol"
kwargs["source"] = "image_point"
if "layout" not in kwargs:
kwargs["layout"] = {}
kwargs["layout"]["icon-image"] = id
kwargs["layout"]["icon-size"] = icon_size
self.add_layer(kwargs)
add_layer(self, layer, before_id=None, name=None)
¶
Adds a layer to the map.
This method adds a layer to the map. If a name is provided, it is used as the key to store the layer in the layer dictionary. Otherwise, the layer's ID is used as the key. If a before_id is provided, the layer is inserted before the layer with that ID.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
layer |
Layer |
The layer object to add to the map. |
required |
before_id |
str |
The ID of an existing layer before which the new layer should be inserted. |
None |
name |
str |
The name to use as the key to store the layer in the layer dictionary. If None, the layer's ID is used as the key. |
None |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_layer(
self,
layer: "Layer",
before_id: Optional[str] = None,
name: Optional[str] = None,
) -> None:
"""
Adds a layer to the map.
This method adds a layer to the map. If a name is provided, it is used
as the key to store the layer in the layer dictionary. Otherwise,
the layer's ID is used as the key. If a before_id is provided, the
layer is inserted before the layer with that ID.
Args:
layer (Layer): The layer object to add to the map.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
name (str, optional): The name to use as the key to store the layer
in the layer dictionary. If None, the layer's ID is used as the key.
Returns:
None
"""
if isinstance(layer, dict):
if "minzoom" in layer:
layer["min-zoom"] = layer.pop("minzoom")
if "maxzoom" in layer:
layer["max-zoom"] = layer.pop("maxzoom")
layer = replace_top_level_hyphens(layer)
layer = Layer(**layer)
if name is None:
name = layer.id
if (
"paint" in layer.to_dict()
and f"{layer.type}-color" in layer.paint
and isinstance(layer.paint[f"{layer.type}-color"], str)
):
color = check_color(layer.paint[f"{layer.type}-color"])
else:
color = None
self.layer_dict[name] = {
"layer": layer,
"opacity": 1.0,
"visible": True,
"type": layer.type,
"color": color,
}
super().add_layer(layer, before_id=before_id)
add_layer_control(self, layer_ids=None, theme='default', css_text=None, position='top-left', bg_layers=False)
¶
Adds a layer control to the map.
This function creates and adds a layer switcher control to the map, allowing users to toggle the visibility of specified layers. The appearance and functionality of the layer control can be customized with parameters such as theme, CSS styling, and position on the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
layer_ids |
Optional[List[str]] |
A list of layer IDs to include in the control. If None, all layers in the map will be included. Defaults to None. |
None |
theme |
str |
The theme for the layer switcher control. Can be "default" or other custom themes. Defaults to "default". |
'default' |
css_text |
Optional[str] |
Custom CSS text for styling the layer control. If None, a default style will be applied. Defaults to None. |
None |
position |
str |
The position of the layer control on the map. Can be "top-left", "top-right", "bottom-left", or "bottom-right". Defaults to "top-left". |
'top-left' |
bg_layers |
bool |
If True, background layers will be included in the control. Defaults to False. |
False |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_layer_control(
self,
layer_ids: Optional[List[str]] = None,
theme: str = "default",
css_text: Optional[str] = None,
position: str = "top-left",
bg_layers: Optional[Union[bool, List[str]]] = False,
) -> None:
"""
Adds a layer control to the map.
This function creates and adds a layer switcher control to the map, allowing users to toggle the visibility
of specified layers. The appearance and functionality of the layer control can be customized with parameters
such as theme, CSS styling, and position on the map.
Args:
layer_ids (Optional[List[str]]): A list of layer IDs to include in the control. If None, all layers
in the map will be included. Defaults to None.
theme (str): The theme for the layer switcher control. Can be "default" or other custom themes. Defaults to "default".
css_text (Optional[str]): Custom CSS text for styling the layer control. If None, a default style will be applied.
Defaults to None.
position (str): The position of the layer control on the map. Can be "top-left", "top-right", "bottom-left",
or "bottom-right". Defaults to "top-left".
bg_layers (bool): If True, background layers will be included in the control. Defaults to False.
Returns:
None
"""
from maplibre.controls import LayerSwitcherControl
if layer_ids is None:
layer_ids = list(self.layer_dict.keys())
if layer_ids[0] == "background":
layer_ids = layer_ids[1:]
if isinstance(bg_layers, list):
layer_ids = bg_layers + layer_ids
elif bg_layers:
background_ids = list(self.style_dict.keys())
layer_ids = background_ids + layer_ids
if css_text is None:
css_text = "padding: 5px; border: 1px solid darkgrey; border-radius: 4px;"
if len(layer_ids) > 0:
control = LayerSwitcherControl(
layer_ids=layer_ids,
theme=theme,
css_text=css_text,
)
self.add_control(control, position=position)
add_legend(self, title='Legend', legend_dict=None, labels=None, colors=None, fontsize=15, bg_color='white', position='bottom-right', builtin_legend=None, **kwargs)
¶
Adds a legend to the map.
This method allows for the addition of a legend to the map. The legend can be customized with a title, labels, colors, and more. A built-in legend can also be specified.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
title |
str |
The title of the legend. Defaults to "Legend". |
'Legend' |
legend_dict |
Optional[Dict[str, str]] |
A dictionary with legend items as keys and colors as values.
If provided, |
None |
labels |
Optional[List[str]] |
A list of legend labels. Defaults to None. |
None |
colors |
Optional[List[str]] |
A list of colors corresponding to the labels. Defaults to None. |
None |
fontsize |
int |
The font size of the legend text. Defaults to 15. |
15 |
bg_color |
str |
The background color of the legend. Defaults to "white". To make the background transparent, set this to "transparent". To make the background half transparent, set this to "rgba(255, 255, 255, 0.5)". |
'white' |
position |
str |
The position of the legend on the map. Can be one of "top-left", "top-right", "bottom-left", "bottom-right". Defaults to "bottom-right". |
'bottom-right' |
builtin_legend |
Optional[str] |
The name of a built-in legend to use. Defaults to None. |
None |
**kwargs |
Union[str, int, float] |
Additional keyword arguments for future use. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_legend(
self,
title: str = "Legend",
legend_dict: Optional[Dict[str, str]] = None,
labels: Optional[List[str]] = None,
colors: Optional[List[str]] = None,
fontsize: int = 15,
bg_color: str = "white",
position: str = "bottom-right",
builtin_legend: Optional[str] = None,
**kwargs: Union[str, int, float],
) -> None:
"""
Adds a legend to the map.
This method allows for the addition of a legend to the map. The legend can be customized with a title,
labels, colors, and more. A built-in legend can also be specified.
Args:
title (str, optional): The title of the legend. Defaults to "Legend".
legend_dict (Optional[Dict[str, str]], optional): A dictionary with legend items as keys and colors as values.
If provided, `labels` and `colors` will be ignored. Defaults to None.
labels (Optional[List[str]], optional): A list of legend labels. Defaults to None.
colors (Optional[List[str]], optional): A list of colors corresponding to the labels. Defaults to None.
fontsize (int, optional): The font size of the legend text. Defaults to 15.
bg_color (str, optional): The background color of the legend. Defaults to "white".
To make the background transparent, set this to "transparent".
To make the background half transparent, set this to "rgba(255, 255, 255, 0.5)".
position (str, optional): The position of the legend on the map. Can be one of "top-left",
"top-right", "bottom-left", "bottom-right". Defaults to "bottom-right".
builtin_legend (Optional[str], optional): The name of a built-in legend to use. Defaults to None.
**kwargs: Additional keyword arguments for future use.
Returns:
None
"""
import pkg_resources
from .legends import builtin_legends
pkg_dir = os.path.dirname(
pkg_resources.resource_filename("leafmap", "leafmap.py")
)
legend_template = os.path.join(pkg_dir, "data/template/legend.html")
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 = [
"top-left",
"top-right",
"bottom-left",
"bottom-right",
]
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)
self.add_html(
legend_text,
fontsize=fontsize,
bg_color=bg_color,
position=position,
**kwargs,
)
add_marker(self, marker=None, lng_lat=[], popup={}, options={})
¶
Adds a marker to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
marker |
Marker |
A Marker object. Defaults to None. |
None |
lng_lat |
List[Union[float, float]] |
A list of two floats representing the longitude and latitude of the marker. |
[] |
popup |
Optional[str] |
The text to display in a popup when the marker is clicked. Defaults to None. |
{} |
options |
Optional[Dict] |
A dictionary of options to customize the marker. Defaults to None. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_marker(
self,
marker: Marker = None,
lng_lat: List[Union[float, float]] = [],
popup: Optional[Dict] = {},
options: Optional[Dict] = {},
) -> None:
"""
Adds a marker to the map.
Args:
marker (Marker, optional): A Marker object. Defaults to None.
lng_lat (List[Union[float, float]]): A list of two floats
representing the longitude and latitude of the marker.
popup (Optional[str], optional): The text to display in a popup when
the marker is clicked. Defaults to None.
options (Optional[Dict], optional): A dictionary of options to
customize the marker. Defaults to None.
Returns:
None
"""
if marker is None:
marker = Marker(lng_lat=lng_lat, popup=popup, options=options)
super().add_marker(marker)
add_pmtiles(self, url, style=None, visible=True, opacity=1.0, exclude_mask=False, tooltip=True, properties=None, template=None, attribution='PMTiles', fit_bounds=True, **kwargs)
¶
Adds a PMTiles layer to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
url |
str |
The URL of the PMTiles file. |
required |
style |
dict |
The CSS style to apply to the layer. Defaults to None. See https://docs.mapbox.com/style-spec/reference/layers/ for more info. |
None |
visible |
bool |
Whether the layer should be shown initially. Defaults to True. |
True |
opacity |
float |
The opacity of the layer. Defaults to 1.0. |
1.0 |
exclude_mask |
bool |
Whether to exclude the mask layer. Defaults to False. |
False |
tooltip |
bool |
Whether to show tooltips on the layer. Defaults to True. |
True |
properties |
dict |
The properties to use for the tooltips. Defaults to None. |
None |
template |
str |
The template to use for the tooltips. Defaults to None. |
None |
attribution |
str |
The attribution to use for the layer. Defaults to 'PMTiles'. |
'PMTiles' |
fit_bounds |
bool |
Whether to zoom to the layer extent. Defaults to True. |
True |
**kwargs |
Any |
Additional keyword arguments to pass to the PMTilesLayer constructor. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_pmtiles(
self,
url: str,
style: Optional[Dict] = None,
visible: bool = True,
opacity: float = 1.0,
exclude_mask: bool = False,
tooltip: bool = True,
properties: Optional[Dict] = None,
template: Optional[str] = None,
attribution: str = "PMTiles",
fit_bounds: bool = True,
**kwargs: Any,
) -> None:
"""
Adds a PMTiles layer to the map.
Args:
url (str): The URL of the PMTiles file.
style (dict, optional): The CSS style to apply to the layer. Defaults to None.
See https://docs.mapbox.com/style-spec/reference/layers/ for more info.
visible (bool, optional): Whether the layer should be shown initially. Defaults to True.
opacity (float, optional): The opacity of the layer. Defaults to 1.0.
exclude_mask (bool, optional): Whether to exclude the mask layer. Defaults to False.
tooltip (bool, optional): Whether to show tooltips on the layer. Defaults to True.
properties (dict, optional): The properties to use for the tooltips. Defaults to None.
template (str, optional): The template to use for the tooltips. Defaults to None.
attribution (str, optional): The attribution to use for the layer. Defaults to 'PMTiles'.
fit_bounds (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"]
pmtiles_source = {
"type": "vector",
"url": f"pmtiles://{url}",
"attribution": attribution,
}
if style is None:
style = pmtiles_style(url)
if "sources" in style:
source_name = list(style["sources"].keys())[0]
elif "layers" in style:
source_name = style["layers"][0]["source"]
else:
source_name = "source"
self.add_source(source_name, pmtiles_source)
style = replace_hyphens_in_keys(style)
for params in style["layers"]:
if exclude_mask and params.get("source_layer") == "mask":
continue
layer = Layer(**params)
self.add_layer(layer)
self.set_visibility(params["id"], visible)
self.set_opacity(params["id"], opacity)
if tooltip:
self.add_tooltip(params["id"], properties, template)
if fit_bounds:
metadata = pmtiles_metadata(url)
bounds = metadata["bounds"] # [minx, miny, maxx, maxy]
self.fit_bounds([[bounds[0], bounds[1]], [bounds[2], bounds[3]]])
except Exception as e:
print(e)
add_raster(self, source, indexes=None, colormap=None, vmin=None, vmax=None, nodata=None, attribution='Localtileserver', name='Raster', before_id=None, fit_bounds=True, visible=True, opacity=1.0, array_args={}, client_args={'cors_all': 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 |
indexes |
int |
The band(s) to use. Band indexing starts at 1. Defaults to None. |
None |
colormap |
str |
The name of the colormap 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. |
'Localtileserver' |
layer_name |
str |
The layer name to use. Defaults to 'Raster'. |
required |
layer_index |
int |
The index of the layer. Defaults to None. |
required |
zoom_to_layer |
bool |
Whether to zoom to the extent of the layer. Defaults to True. |
required |
visible |
bool |
Whether the layer is visible. Defaults to True. |
True |
opacity |
float |
The opacity of the layer. Defaults to 1.0. |
1.0 |
array_args |
dict |
Additional arguments to pass to
|
{} |
client_args |
dict |
Additional arguments to pass to localtileserver.TileClient. Defaults to { "cors_all": False }. |
{'cors_all': True} |
Source code in leafmap/maplibregl.py
def add_raster(
self,
source,
indexes=None,
colormap=None,
vmin=None,
vmax=None,
nodata=None,
attribution="Localtileserver",
name="Raster",
before_id=None,
fit_bounds=True,
visible=True,
opacity=1.0,
array_args={},
client_args={"cors_all": 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.
indexes (int, optional): The band(s) to use. Band indexing starts
at 1. Defaults to None.
colormap (str, optional): The name of the colormap from `matplotlib`
to use when plotting a single band.
See https://matplotlib.org/stable/gallery/color/colormap_reference.html.
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 'Raster'.
layer_index (int, optional): The index of the layer. Defaults to None.
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.
opacity (float, optional): The opacity of the layer. Defaults to 1.0.
array_args (dict, optional): Additional arguments to pass to
`array_to_memory_file` when reading the raster. Defaults to {}.
client_args (dict, optional): Additional arguments to pass to
localtileserver.TileClient. Defaults to { "cors_all": False }.
"""
import numpy as np
import xarray as xr
if isinstance(source, np.ndarray) or isinstance(source, xr.DataArray):
source = array_to_image(source, **array_args)
tile_layer, tile_client = get_local_tile_layer(
source,
indexes=indexes,
colormap=colormap,
vmin=vmin,
vmax=vmax,
nodata=nodata,
opacity=opacity,
attribution=attribution,
layer_name=name,
client_args=client_args,
return_client=True,
**kwargs,
)
self.add_tile_layer(
tile_layer.url,
name=name,
opacity=opacity,
visible=visible,
attribution=attribution,
before_id=before_id,
)
bounds = tile_client.bounds() # [ymin, ymax, xmin, xmax]
bounds = [[bounds[2], bounds[0]], [bounds[3], bounds[1]]]
# [minx, miny, maxx, maxy]
if fit_bounds:
self.fit_bounds(bounds)
add_source(self, id, source)
¶
Adds a source to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
id |
str |
The ID of the source. |
required |
source |
str or dict |
The source data. . |
required |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_source(self, id: str, source: Union[str, Dict]) -> None:
"""
Adds a source to the map.
Args:
id (str): The ID of the source.
source (str or dict): The source data. .
Returns:
None
"""
super().add_source(id, source)
self.source_dict[id] = source
add_stac_layer(self, url=None, collection=None, item=None, assets=None, bands=None, titiler_endpoint=None, name='STAC Layer', attribution='', opacity=1.0, visible=True, fit_bounds=True, before_id=None, **kwargs)
¶
Adds a STAC TileLayer to the map.
This method adds a STAC TileLayer to the map. The STAC TileLayer is created from the specified URL, collection, item, assets, and bands, and it is added to the map with the specified name, attribution, opacity, visibility, and fit bounds.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
url |
str |
HTTP URL to a STAC item, e.g., https://bit.ly/3VlttGm. Defaults to None. |
None |
collection |
str |
The Microsoft Planetary Computer STAC collection ID, e.g., landsat-8-c2-l2. Defaults to None. |
None |
item |
str |
The Microsoft Planetary Computer STAC item ID, e.g., LC08_L2SP_047027_20201204_02_T1. Defaults to None. |
None |
assets |
str | list |
The Microsoft Planetary Computer STAC asset ID, e.g., ["SR_B7", "SR_B5", "SR_B4"]. Defaults to None. |
None |
bands |
list |
A list of band names, e.g., ["SR_B7", "SR_B5", "SR_B4"]. Defaults to None. |
None |
titiler_endpoint |
str |
Titiler endpoint, e.g., "https://titiler.xyz", "https://planetarycomputer.microsoft.com/api/data/v1", "planetary-computer", "pc". Defaults to None. |
None |
name |
str |
The layer name to use for the layer. Defaults to 'STAC Layer'. |
'STAC Layer' |
attribution |
str |
The attribution to use. Defaults to ''. |
'' |
opacity |
float |
The opacity of the layer. Defaults to 1. |
1.0 |
visible |
bool |
A flag indicating whether the layer should be on by default. Defaults to True. |
True |
fit_bounds |
bool |
A flag indicating whether the map should be zoomed to the layer extent. Defaults to True. |
True |
before_id |
str |
The ID of an existing layer before which the new layer should be inserted. |
None |
**kwargs |
Any |
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 |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_stac_layer(
self,
url: Optional[str] = None,
collection: Optional[str] = None,
item: Optional[str] = None,
assets: Optional[Union[str, List[str]]] = None,
bands: Optional[List[str]] = None,
titiler_endpoint: Optional[str] = None,
name: str = "STAC Layer",
attribution: str = "",
opacity: float = 1.0,
visible: bool = True,
fit_bounds: bool = True,
before_id: Optional[str] = None,
**kwargs: Any,
) -> None:
"""
Adds a STAC TileLayer to the map.
This method adds a STAC TileLayer to the map. The STAC TileLayer is
created from the specified URL, collection, item, assets, and bands, and
it is added to the map with the specified name, attribution, opacity,
visibility, and fit bounds.
Args:
url (str, optional): HTTP URL to a STAC item, e.g., https://bit.ly/3VlttGm.
Defaults to None.
collection (str, optional): The Microsoft Planetary Computer STAC
collection ID, e.g., landsat-8-c2-l2. Defaults to None.
item (str, optional): The Microsoft Planetary Computer STAC item ID, e.g.,
LC08_L2SP_047027_20201204_02_T1. Defaults to None.
assets (str | list, optional): The Microsoft Planetary Computer STAC asset ID,
e.g., ["SR_B7", "SR_B5", "SR_B4"]. Defaults to None.
bands (list, optional): A list of band names, e.g.,
["SR_B7", "SR_B5", "SR_B4"]. Defaults to None.
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.
visible (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.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
**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"]`.
Returns:
None
"""
import numpy as np
if "nodata" not in kwargs:
kwargs["nodata"] = np.nan
if "colormap_name" in kwargs and kwargs["colormap_name"] is None:
kwargs.pop("colormap_name")
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, visible, before_id=before_id
)
if fit_bounds:
self.fit_bounds([[bounds[0], bounds[1]], [bounds[2], bounds[3]]])
add_text(self, text, fontsize=20, fontcolor='black', bold=False, padding='5px', bg_color='white', border_radius='5px', position='bottom-right', **kwargs)
¶
Adds text to the map with customizable styling.
This method allows adding a text widget to the map with various styling options such as font size, color, background color, and more. The text's appearance can be further customized using additional CSS properties passed through kwargs.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
text |
str |
The text to add to the map. |
required |
fontsize |
int |
The font size of the text. Defaults to 20. |
20 |
fontcolor |
str |
The color of the text. Defaults to "black". |
'black' |
bold |
bool |
If True, the text will be bold. Defaults to False. |
False |
padding |
str |
The padding around the text. Defaults to "5px". |
'5px' |
bg_color |
str |
The background color of the text widget. Defaults to "white". To make the background transparent, set this to "transparent". To make the background half transparent, set this to "rgba(255, 255, 255, 0.5)". |
'white' |
border_radius |
str |
The border radius of the text widget. Defaults to "5px". |
'5px' |
position |
str |
The position of the text widget on the map. Defaults to "bottom-right". |
'bottom-right' |
**kwargs |
Any |
Additional CSS properties to apply to the text widget. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_text(
self,
text: str,
fontsize: int = 20,
fontcolor: str = "black",
bold: bool = False,
padding: str = "5px",
bg_color: str = "white",
border_radius: str = "5px",
position: str = "bottom-right",
**kwargs: Any,
) -> None:
"""
Adds text to the map with customizable styling.
This method allows adding a text widget to the map with various styling options such as font size, color,
background color, and more. The text's appearance can be further customized using additional CSS properties
passed through kwargs.
Args:
text (str): The text to add to the map.
fontsize (int, optional): The font size of the text. Defaults to 20.
fontcolor (str, optional): The color of the text. Defaults to "black".
bold (bool, optional): If True, the text will be bold. Defaults to False.
padding (str, optional): The padding around the text. Defaults to "5px".
bg_color (str, optional): The background color of the text widget. Defaults to "white".
To make the background transparent, set this to "transparent".
To make the background half transparent, set this to "rgba(255, 255, 255, 0.5)".
border_radius (str, optional): The border radius of the text widget. Defaults to "5px".
position (str, optional): The position of the text widget on the map. Defaults to "bottom-right".
**kwargs (Any): Additional CSS properties to apply to the text widget.
Returns:
None
"""
from maplibre.controls import InfoBoxControl
if bg_color == "transparent" and "box-shadow" not in kwargs:
kwargs["box-shadow"] = "none"
css_text = f"""font-size: {fontsize}px; color: {fontcolor};
font-weight: {'bold' if bold else 'normal'}; padding: {padding};
background-color: {bg_color}; border-radius: {border_radius};"""
for key, value in kwargs.items():
css_text += f" {key.replace('_', '-')}: {value};"
control = InfoBoxControl(content=text, css_text=css_text)
self.add_control(control, position=position)
add_tile_layer(self, url, name='Tile Layer', attribution='', opacity=1.0, visible=True, tile_size=256, before_id=None, source_args={}, **kwargs)
¶
Adds a TileLayer to the map.
This method adds a TileLayer to the map. The TileLayer is created from the specified URL, and it is added to the map with the specified name, attribution, visibility, and tile size.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
url |
str |
The URL of the tile layer. |
required |
name |
str |
The name to use for the layer. Defaults to ' Tile Layer'. |
'Tile Layer' |
attribution |
str |
The attribution to use for the layer. Defaults to ''. |
'' |
visible |
bool |
Whether the layer should be visible by default. Defaults to True. |
True |
tile_size |
int |
The size of the tiles in the layer. Defaults to 256. |
256 |
before_id |
str |
The ID of an existing layer before which the new layer should be inserted. |
None |
source_args |
dict |
Additional keyword arguments that are passed to the RasterTileSource class. |
{} |
**kwargs |
Any |
Additional keyword arguments that are passed to the Layer class. See https://eodagmbh.github.io/py-maplibregl/api/layer/ for more information. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_tile_layer(
self,
url: str,
name: str = "Tile Layer",
attribution: str = "",
opacity: float = 1.0,
visible: bool = True,
tile_size: int = 256,
before_id: Optional[str] = None,
source_args: Dict = {},
**kwargs: Any,
) -> None:
"""
Adds a TileLayer to the map.
This method adds a TileLayer to the map. The TileLayer is created from
the specified URL, and it is added to the map with the specified
name, attribution, visibility, and tile size.
Args:
url (str): The URL of the tile layer.
name (str, optional): The name to use for the layer. Defaults to '
Tile Layer'.
attribution (str, optional): The attribution to use for the layer.
Defaults to ''.
visible (bool, optional): Whether the layer should be visible by
default. Defaults to True.
tile_size (int, optional): The size of the tiles in the layer.
Defaults to 256.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
source_args (dict, optional): Additional keyword arguments that are
passed to the RasterTileSource class.
**kwargs: Additional keyword arguments that are passed to the Layer class.
See https://eodagmbh.github.io/py-maplibregl/api/layer/ for more information.
Returns:
None
"""
raster_source = RasterTileSource(
tiles=[url.strip()],
attribution=attribution,
tile_size=tile_size,
**source_args,
)
layer = Layer(id=name, source=raster_source, type=LayerType.RASTER, **kwargs)
self.add_layer(layer, before_id=before_id, name=name)
self.set_visibility(name, visible)
self.set_opacity(name, opacity)
add_vector(self, data, layer_type=None, filter=None, paint=None, name=None, fit_bounds=True, visible=True, before_id=None, source_args={}, **kwargs)
¶
Adds a vector layer to the map.
This method adds a vector layer to the map. The vector data can be a URL or local file path to a vector file. If a name is provided, it is used as the key to store the layer in the layer dictionary. Otherwise, a random name is generated.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
data |
str | dict |
The vector data. This can be a URL or local file path to a vector file. |
required |
layer_type |
str |
The type of the layer. If None, the type is inferred from the GeoJSON data. |
None |
filter |
dict |
The filter to apply to the layer. If None, no filter is applied. |
None |
paint |
dict |
The paint properties to apply to the layer. If None, no paint properties are applied. |
None |
name |
str |
The name of the layer. If None, a random name is generated. |
None |
fit_bounds |
bool |
Whether to adjust the viewport of the map to fit the bounds of the GeoJSON data. Defaults to True. |
True |
visible |
bool |
Whether the layer is visible or not. Defaults to True. |
True |
before_id |
str |
The ID of an existing layer before which the new layer should be inserted. |
None |
source_args |
dict |
Additional keyword arguments that are passed to the GeoJSONSource class. |
{} |
**kwargs |
Any |
Additional keyword arguments that are passed to the Layer class. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Exceptions:
| Type | Description |
|---|---|
ValueError |
If the data is not a URL or a GeoJSON dictionary. |
Source code in leafmap/maplibregl.py
def add_vector(
self,
data: Union[str, Dict],
layer_type: Optional[str] = None,
filter: Optional[Dict] = None,
paint: Optional[Dict] = None,
name: Optional[str] = None,
fit_bounds: bool = True,
visible: bool = True,
before_id: Optional[str] = None,
source_args: Dict = {},
**kwargs: Any,
) -> None:
"""
Adds a vector layer to the map.
This method adds a vector layer to the map. The vector data can be a
URL or local file path to a vector file. If a name is provided, it
is used as the key to store the layer in the layer dictionary. Otherwise,
a random name is generated.
Args:
data (str | dict): The vector data. This can be a URL or local file
path to a vector file.
layer_type (str, optional): The type of the layer. If None, the type
is inferred from the GeoJSON data.
filter (dict, optional): The filter to apply to the layer. If None,
no filter is applied.
paint (dict, optional): The paint properties to apply to the layer.
If None, no paint properties are applied.
name (str, optional): The name of the layer. If None, a random name
is generated.
fit_bounds (bool, optional): Whether to adjust the viewport of the
map to fit the bounds of the GeoJSON data. Defaults to True.
visible (bool, optional): Whether the layer is visible or not.
Defaults to True.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
source_args (dict, optional): Additional keyword arguments that are
passed to the GeoJSONSource class.
**kwargs: Additional keyword arguments that are passed to the Layer class.
Returns:
None
Raises:
ValueError: If the data is not a URL or a GeoJSON dictionary.
"""
if not isinstance(data, gpd.GeoDataFrame):
data = gpd.read_file(data).__geo_interface__
else:
data = data.__geo_interface__
self.add_geojson(
data,
layer_type=layer_type,
filter=filter,
paint=paint,
name=name,
fit_bounds=fit_bounds,
visible=visible,
before_id=before_id,
source_args=source_args,
**kwargs,
)
add_video(self, urls, coordinates, layer_id='video', before_id=None)
¶
Adds a video layer to the map.
This method allows embedding a video into the map by specifying the video URLs and the geographical coordinates that the video should cover. The video will be stretched and fitted into the specified coordinates.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
urls |
Union[str, List[str]] |
A single video URL or a list of video URLs. These URLs must be accessible from the client's location. |
required |
coordinates |
List[List[float]] |
A list of four coordinates in [longitude, latitude] format, specifying the corners of the video. The coordinates order should be top-left, top-right, bottom-right, bottom-left. |
required |
layer_id |
str |
The ID for the video layer. Defaults to "video". |
'video' |
before_id |
Optional[str] |
The ID of an existing layer to insert the new layer before. If None, the layer will be added on top. Defaults to None. |
None |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_video(
self,
urls: Union[str, List[str]],
coordinates: List[List[float]],
layer_id: str = "video",
before_id: Optional[str] = None,
) -> None:
"""
Adds a video layer to the map.
This method allows embedding a video into the map by specifying the video URLs and the geographical coordinates
that the video should cover. The video will be stretched and fitted into the specified coordinates.
Args:
urls (Union[str, List[str]]): A single video URL or a list of video URLs. These URLs must be accessible
from the client's location.
coordinates (List[List[float]]): A list of four coordinates in [longitude, latitude] format, specifying
the corners of the video. The coordinates order should be top-left, top-right, bottom-right, bottom-left.
layer_id (str): The ID for the video layer. Defaults to "video".
before_id (Optional[str]): The ID of an existing layer to insert the new layer before. If None, the layer
will be added on top. Defaults to None.
Returns:
None
"""
if isinstance(urls, str):
urls = [urls]
source = {
"type": "video",
"urls": urls,
"coordinates": coordinates,
}
self.add_source("video_source", source)
layer = {
"id": layer_id,
"type": "raster",
"source": "video_source",
}
self.add_layer(layer, before_id=before_id)
add_wms_layer(self, url, layers, format='image/png', name='WMS Layer', attribution='', opacity=1.0, visible=True, tile_size=256, before_id=None, source_args={}, **kwargs)
¶
Adds a WMS layer to the map.
This method adds a WMS layer to the map. The WMS is created from the specified URL, and it is added to the map with the specified name, attribution, visibility, and tile size.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
url |
str |
The URL of the tile layer. |
required |
layers |
str |
The layers to include in the WMS request. |
required |
format |
str |
The format of the tiles in the layer. |
'image/png' |
name |
str |
The name to use for the layer. Defaults to 'WMS Layer'. |
'WMS Layer' |
attribution |
str |
The attribution to use for the layer. Defaults to ''. |
'' |
visible |
bool |
Whether the layer should be visible by default. Defaults to True. |
True |
tile_size |
int |
The size of the tiles in the layer. Defaults to 256. |
256 |
before_id |
str |
The ID of an existing layer before which the new layer should be inserted. |
None |
source_args |
dict |
Additional keyword arguments that are passed to the RasterTileSource class. |
{} |
**kwargs |
Any |
Additional keyword arguments that are passed to the Layer class. See https://eodagmbh.github.io/py-maplibregl/api/layer/ for more information. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def add_wms_layer(
self,
url: str,
layers: str,
format: str = "image/png",
name: str = "WMS Layer",
attribution: str = "",
opacity: float = 1.0,
visible: bool = True,
tile_size: int = 256,
before_id: Optional[str] = None,
source_args: Dict = {},
**kwargs: Any,
) -> None:
"""
Adds a WMS layer to the map.
This method adds a WMS layer to the map. The WMS is created from
the specified URL, and it is added to the map with the specified
name, attribution, visibility, and tile size.
Args:
url (str): The URL of the tile layer.
layers (str): The layers to include in the WMS request.
format (str, optional): The format of the tiles in the layer.
name (str, optional): The name to use for the layer. Defaults to
'WMS Layer'.
attribution (str, optional): The attribution to use for the layer.
Defaults to ''.
visible (bool, optional): Whether the layer should be visible by
default. Defaults to True.
tile_size (int, optional): The size of the tiles in the layer.
Defaults to 256.
before_id (str, optional): The ID of an existing layer before which
the new layer should be inserted.
source_args (dict, optional): Additional keyword arguments that are
passed to the RasterTileSource class.
**kwargs: Additional keyword arguments that are passed to the Layer class.
See https://eodagmbh.github.io/py-maplibregl/api/layer/ for more information.
Returns:
None
"""
url = f"{url.strip()}?service=WMS&request=GetMap&layers={layers}&styles=&format={format.replace('/', '%2F')}&transparent=true&version=1.1.1&height=256&width=256&srs=EPSG%3A3857&bbox={{bbox-epsg-3857}}"
self.add_tile_layer(
url,
name=name,
attribution=attribution,
opacity=opacity,
visible=visible,
tile_size=tile_size,
before_id=before_id,
source_args=source_args,
**kwargs,
)
find_first_symbol_layer(self)
¶
Find the first symbol layer in the map's current style.
Returns:
| Type | Description |
|---|---|
Optional[Dict] |
The first symbol layer as a dictionary if found, otherwise None. |
Source code in leafmap/maplibregl.py
def find_first_symbol_layer(self) -> Optional[Dict]:
"""
Find the first symbol layer in the map's current style.
Returns:
Optional[Dict]: The first symbol layer as a dictionary if found, otherwise None.
"""
layers = self.get_style_layers()
for layer in layers:
if layer["type"] == "symbol":
return layer
return None
find_style_layer(self, id)
¶
Searches for a style layer in the map's current style by its ID and returns it if found.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
id |
str |
The ID of the style layer to find. |
required |
Returns:
| Type | Description |
|---|---|
Optional[Dict] |
The style layer as a dictionary if found, otherwise None. |
Source code in leafmap/maplibregl.py
def find_style_layer(self, id: str) -> Optional[Dict]:
"""
Searches for a style layer in the map's current style by its ID and returns it if found.
Args:
id (str): The ID of the style layer to find.
Returns:
Optional[Dict]: The style layer as a dictionary if found, otherwise None.
"""
layers = self.get_style_layers()
for layer in layers:
if layer["id"] == id:
return layer
return None
fit_bounds(self, bounds)
¶
Adjusts the viewport of the map to fit the specified geographical bounds in the format of [[lon_min, lat_min], [lon_max, lat_max]] or [lon_min, lat_min, lon_max, lat_max].
This method adjusts the viewport of the map so that the specified geographical bounds are visible in the viewport. The bounds are specified as a list of two points, where each point is a list of two numbers representing the longitude and latitude.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
bounds |
list |
A list of two points representing the geographical bounds that should be visible in the viewport. Each point is a list of two numbers representing the longitude and latitude. For example, [[32.958984, -5.353521],[43.50585, 5.615985]] |
required |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def fit_bounds(self, bounds: List[Tuple[float, float]]) -> None:
"""
Adjusts the viewport of the map to fit the specified geographical bounds
in the format of [[lon_min, lat_min], [lon_max, lat_max]] or
[lon_min, lat_min, lon_max, lat_max].
This method adjusts the viewport of the map so that the specified geographical bounds
are visible in the viewport. The bounds are specified as a list of two points,
where each point is a list of two numbers representing the longitude and latitude.
Args:
bounds (list): A list of two points representing the geographical bounds that
should be visible in the viewport. Each point is a list of two
numbers representing the longitude and latitude. For example,
[[32.958984, -5.353521],[43.50585, 5.615985]]
Returns:
None
"""
if isinstance(bounds, list):
if len(bounds) == 4 and all(isinstance(i, (int, float)) for i in bounds):
bounds = [[bounds[0], bounds[1]], [bounds[2], bounds[3]]]
self.add_call("fitBounds", bounds)
fly_to(self, lon, lat, zoom=None, speed=None, essential=True, **kwargs)
¶
Makes the map fly to a specified location.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
lon |
float |
The longitude of the location to fly to. |
required |
lat |
float |
The latitude of the location to fly to. |
required |
zoom |
Optional[float] |
The zoom level to use when flying to the location. Defaults to None. |
None |
speed |
Optional[float] |
The speed of the fly animation. Defaults to None. |
None |
essential |
bool |
Whether the flyTo animation is considered essential and not affected by prefers-reduced-motion. Defaults to True. |
True |
**kwargs |
Any |
Additional keyword arguments to pass to the flyTo function. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def fly_to(
self,
lon: float,
lat: float,
zoom: Optional[float] = None,
speed: Optional[float] = None,
essential: bool = True,
**kwargs: Any,
) -> None:
"""
Makes the map fly to a specified location.
Args:
lon (float): The longitude of the location to fly to.
lat (float): The latitude of the location to fly to.
zoom (Optional[float], optional): The zoom level to use when flying
to the location. Defaults to None.
speed (Optional[float], optional): The speed of the fly animation.
Defaults to None.
essential (bool, optional): Whether the flyTo animation is considered
essential and not affected by prefers-reduced-motion. Defaults to True.
**kwargs: Additional keyword arguments to pass to the flyTo function.
Returns:
None
"""
center = [lon, lat]
kwargs["center"] = center
if zoom is not None:
kwargs["zoom"] = zoom
if speed is not None:
kwargs["speed"] = speed
if essential:
kwargs["essential"] = essential
super().add_call("flyTo", kwargs)
get_style(self)
¶
Get the style of the map.
Returns:
| Type | Description |
|---|---|
Dict |
The style of the map. |
Source code in leafmap/maplibregl.py
def get_style(self):
"""
Get the style of the map.
Returns:
Dict: The style of the map.
"""
if self._style is not None:
if isinstance(self._style, str):
response = requests.get(self._style)
style = response.json()
elif isinstance(self._style, dict):
style = self._style
return style
else:
return {}
get_style_layers(self, return_ids=False, sorted=True)
¶
Get the names of the basemap layers.
Returns:
| Type | Description |
|---|---|
List[str] |
The names of the basemap layers. |
Source code in leafmap/maplibregl.py
def get_style_layers(self, return_ids=False, sorted=True) -> List[str]:
"""
Get the names of the basemap layers.
Returns:
List[str]: The names of the basemap layers.
"""
style = self.get_style()
if "layers" in style:
layers = style["layers"]
if return_ids:
ids = [layer["id"] for layer in layers]
if sorted:
ids.sort()
return ids
else:
return layers
else:
return []
jump_to(self, options={}, **kwargs)
¶
Jumps the map to a specified location.
This function jumps the map to the specified location with the specified options. Additional keyword arguments can be provided to control the jump. For more information, see https://maplibre.org/maplibre-gl-js/docs/API/classes/Map/#jumpto
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
options |
Dict[str, Any] |
Additional options to control the jump. Defaults to {}. |
{} |
**kwargs |
Any |
Additional keyword arguments to control the jump. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def jump_to(self, options: Dict[str, Any] = {}, **kwargs: Any) -> None:
"""
Jumps the map to a specified location.
This function jumps the map to the specified location with the specified options.
Additional keyword arguments can be provided to control the jump. For more information,
see https://maplibre.org/maplibre-gl-js/docs/API/classes/Map/#jumpto
Args:
options (Dict[str, Any], optional): Additional options to control the jump. Defaults to {}.
**kwargs (Any): Additional keyword arguments to control the jump.
Returns:
None
"""
super().add_call("jumpTo", options, **kwargs)
layer_interact(self, name=None)
¶
Create a layer widget for changing the visibility and opacity of a layer.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
name |
str |
The name of the layer. |
None |
Returns:
| Type | Description |
|---|---|
ipywidgets.Widget |
The layer widget. |
Source code in leafmap/maplibregl.py
def layer_interact(self, name=None):
"""Create a layer widget for changing the visibility and opacity of a layer.
Args:
name (str): The name of the layer.
Returns:
ipywidgets.Widget: The layer widget.
"""
import ipywidgets as widgets
layer_names = list(self.layer_dict.keys())
if name is None:
name = layer_names[-1]
elif name not in layer_names:
raise ValueError(f"Layer {name} not found.")
style = {"description_width": "initial"}
dropdown = widgets.Dropdown(
options=layer_names,
value=name,
description="Layer",
style=style,
)
checkbox = widgets.Checkbox(
description="Visible",
value=self.layer_dict[name]["visible"],
style=style,
layout=widgets.Layout(width="120px"),
)
opacity_slider = widgets.FloatSlider(
description="Opacity",
min=0,
max=1,
step=0.01,
value=self.layer_dict[name]["opacity"],
style=style,
)
color_picker = widgets.ColorPicker(
concise=True,
value="white",
style=style,
)
if self.layer_dict[name]["color"] is not None:
color_picker.value = self.layer_dict[name]["color"]
color_picker.disabled = False
else:
color_picker.value = "white"
color_picker.disabled = True
def color_picker_event(change):
if self.layer_dict[dropdown.value]["color"] is not None:
self.set_color(dropdown.value, change.new)
color_picker.observe(color_picker_event, "value")
hbox = widgets.HBox(
[dropdown, checkbox, opacity_slider, color_picker],
layout=widgets.Layout(width="750px"),
)
def dropdown_event(change):
name = change.new
checkbox.value = self.layer_dict[dropdown.value]["visible"]
opacity_slider.value = self.layer_dict[dropdown.value]["opacity"]
if self.layer_dict[dropdown.value]["color"] is not None:
color_picker.value = self.layer_dict[dropdown.value]["color"]
color_picker.disabled = False
else:
color_picker.value = "white"
color_picker.disabled = True
dropdown.observe(dropdown_event, "value")
def update_layer(change):
self.set_visibility(dropdown.value, checkbox.value)
self.set_opacity(dropdown.value, opacity_slider.value)
checkbox.observe(update_layer, "value")
opacity_slider.observe(update_layer, "value")
return hbox
open_geojson(self, **kwargs)
¶
Creates a file uploader widget to upload a GeoJSON file. When a file is uploaded, it is written to a temporary file and added to the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
**kwargs |
Any |
Additional keyword arguments to pass to the add_geojson method. |
{} |
Returns:
| Type | Description |
|---|---|
widgets.FileUpload |
The file uploader widget. |
Source code in leafmap/maplibregl.py
def open_geojson(self, **kwargs: Any) -> "widgets.FileUpload":
"""
Creates a file uploader widget to upload a GeoJSON file. When a file is
uploaded, it is written to a temporary file and added to the map.
Args:
**kwargs: Additional keyword arguments to pass to the add_geojson method.
Returns:
widgets.FileUpload: The file uploader widget.
"""
import ipywidgets as widgets
uploader = widgets.FileUpload(
accept=".geojson", # Accept GeoJSON files
multiple=False, # Only single file upload
description="Open GeoJSON",
)
def on_upload(change):
content = uploader.value[0]["content"]
temp_file = temp_file_path(extension=".geojson")
with open(temp_file, "wb") as f:
f.write(content)
self.add_geojson(temp_file, **kwargs)
uploader.observe(on_upload, names="value")
return uploader
pan_to(self, lnglat, options={}, **kwargs)
¶
Pans the map to a specified location.
This function pans the map to the specified longitude and latitude coordinates. Additional options and keyword arguments can be provided to control the panning. For more information, see https://maplibre.org/maplibre-gl-js/docs/API/classes/Map/#panto
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
lnglat |
List[float, float] |
The longitude and latitude coordinates to pan to. |
required |
options |
Dict[str, Any] |
Additional options to control the panning. Defaults to {}. |
{} |
**kwargs |
Any |
Additional keyword arguments to control the panning. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def pan_to(
self,
lnglat: List[float],
options: Dict[str, Any] = {},
**kwargs: Any,
) -> None:
"""
Pans the map to a specified location.
This function pans the map to the specified longitude and latitude coordinates.
Additional options and keyword arguments can be provided to control the panning.
For more information, see https://maplibre.org/maplibre-gl-js/docs/API/classes/Map/#panto
Args:
lnglat (List[float, float]): The longitude and latitude coordinates to pan to.
options (Dict[str, Any], optional): Additional options to control the panning. Defaults to {}.
**kwargs (Any): Additional keyword arguments to control the panning.
Returns:
None
"""
super().add_call("panTo", lnglat, options, **kwargs)
remove_layer(self, name)
¶
Removes a layer from the map.
This method removes a layer from the map using the layer's name.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
name |
str |
The name of the layer to remove. |
required |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def remove_layer(self, name: str) -> None:
"""
Removes a layer from the map.
This method removes a layer from the map using the layer's name.
Args:
name (str): The name of the layer to remove.
Returns:
None
"""
super().add_call("removeLayer", name)
if name in self.layer_dict:
self.layer_dict.pop(name)
rotate_to(self, bearing, options={}, **kwargs)
¶
Rotate the map to a specified bearing.
This function rotates the map to a specified bearing. The bearing is specified in degrees counter-clockwise from true north. If the bearing is not specified, the map will rotate to true north. Additional options and keyword arguments can be provided to control the rotation. For more information, see https://maplibre.org/maplibre-gl-js/docs/API/classes/Map/#rotateto
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
bearing |
float |
The bearing to rotate to, in degrees counter-clockwise from true north. |
required |
options |
Dict[str, Any] |
Additional options to control the rotation. Defaults to {}. |
{} |
**kwargs |
Any |
Additional keyword arguments to control the rotation. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def rotate_to(
self, bearing: float, options: Dict[str, Any] = {}, **kwargs: Any
) -> None:
"""
Rotate the map to a specified bearing.
This function rotates the map to a specified bearing. The bearing is specified in degrees
counter-clockwise from true north. If the bearing is not specified, the map will rotate to
true north. Additional options and keyword arguments can be provided to control the rotation.
For more information, see https://maplibre.org/maplibre-gl-js/docs/API/classes/Map/#rotateto
Args:
bearing (float): The bearing to rotate to, in degrees counter-clockwise from true north.
options (Dict[str, Any], optional): Additional options to control the rotation. Defaults to {}.
**kwargs (Any): Additional keyword arguments to control the rotation.
Returns:
None
"""
super().add_call("rotateTo", bearing, options, **kwargs)
save_draw_features(self, filepath, indent=4, **kwargs)
¶
Saves the drawn features to a file.
This method saves all features created with the drawing control to a specified file in GeoJSON format. If there are no features to save, the file will not be created.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
filepath |
str |
The path to the file where the GeoJSON data will be saved. |
required |
**kwargs |
Any |
Additional keyword arguments to be passed to |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Exceptions:
| Type | Description |
|---|---|
ValueError |
If the feature collection is empty. |
Source code in leafmap/maplibregl.py
def save_draw_features(self, filepath: str, indent=4, **kwargs) -> None:
"""
Saves the drawn features to a file.
This method saves all features created with the drawing control to a
specified file in GeoJSON format. If there are no features to save, the
file will not be created.
Args:
filepath (str): The path to the file where the GeoJSON data will be saved.
**kwargs (Any): Additional keyword arguments to be passed to
json.dump for custom serialization.
Returns:
None
Raises:
ValueError: If the feature collection is empty.
"""
if len(self.draw_feature_collection_all) > 0:
with open(filepath, "w") as f:
json.dump(self.draw_feature_collection_all, f, indent=indent, **kwargs)
else:
print("There are no features to save.")
set_center(self, lon, lat, zoom=None)
¶
Sets the center of the map.
This method sets the center of the map to the specified longitude and latitude. If a zoom level is provided, it also sets the zoom level of the map.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
lon |
float |
The longitude of the center of the map. |
required |
lat |
float |
The latitude of the center of the map. |
required |
zoom |
int |
The zoom level of the map. If None, the zoom level is not changed. |
None |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def set_center(self, lon: float, lat: float, zoom: Optional[int] = None) -> None:
"""
Sets the center of the map.
This method sets the center of the map to the specified longitude and latitude.
If a zoom level is provided, it also sets the zoom level of the map.
Args:
lon (float): The longitude of the center of the map.
lat (float): The latitude of the center of the map.
zoom (int, optional): The zoom level of the map. If None, the zoom
level is not changed.
Returns:
None
"""
center = [lon, lat]
self.add_call("setCenter", center)
if zoom is not None:
self.add_call("setZoom", zoom)
set_color(self, name, color)
¶
Set the color of a layer.
This method sets the color of the specified layer to the specified value.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
name |
str |
The name of the layer. |
required |
color |
str |
The color value to set. |
required |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def set_color(self, name: str, color: str) -> None:
"""
Set the color of a layer.
This method sets the color of the specified layer to the specified value.
Args:
name (str): The name of the layer.
color (str): The color value to set.
Returns:
None
"""
color = check_color(color)
super().set_paint_property(
name, f"{self.layer_dict[name]['layer'].type}-color", color
)
self.layer_dict[name]["color"] = color
set_layout_property(self, name, prop, value)
¶
Set the layout property of a layer.
This method sets the layout property of the specified layer to the specified value.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
name |
str |
The name of the layer. |
required |
prop |
str |
The layout property to set. |
required |
value |
Any |
The value to set. |
required |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def set_layout_property(self, name: str, prop: str, value: Any) -> None:
"""
Set the layout property of a layer.
This method sets the layout property of the specified layer to the specified value.
Args:
name (str): The name of the layer.
prop (str): The layout property to set.
value (Any): The value to set.
Returns:
None
"""
super().set_layout_property(name, prop, value)
if name in self.style_dict:
layer = self.style_dict[name]
if "layout" in layer:
layer["layout"][prop] = value
set_opacity(self, name, opacity)
¶
Set the opacity of a layer.
This method sets the opacity of the specified layer to the specified value.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
name |
str |
The name of the layer. |
required |
opacity |
float |
The opacity value to set. |
required |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def set_opacity(self, name: str, opacity: float) -> None:
"""
Set the opacity of a layer.
This method sets the opacity of the specified layer to the specified value.
Args:
name (str): The name of the layer.
opacity (float): The opacity value to set.
Returns:
None
"""
if name in self.layer_dict:
layer_type = self.layer_dict[name]["layer"].to_dict()["type"]
prop_name = f"{layer_type}-opacity"
self.layer_dict[name]["opacity"] = opacity
elif name in self.style_dict:
layer = self.style_dict[name]
layer_type = layer.get("type")
prop_name = f"{layer_type}-opacity"
if "paint" in layer:
layer["paint"][prop_name] = opacity
super().set_paint_property(name, prop_name, opacity)
set_paint_property(self, name, prop, value)
¶
Set the opacity of a layer.
This method sets the opacity of the specified layer to the specified value.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
name |
str |
The name of the layer. |
required |
opacity |
float |
The opacity value to set. |
required |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def set_paint_property(self, name: str, prop: str, value: Any) -> None:
"""
Set the opacity of a layer.
This method sets the opacity of the specified layer to the specified value.
Args:
name (str): The name of the layer.
opacity (float): The opacity value to set.
Returns:
None
"""
super().set_paint_property(name, prop, value)
if "opacity" in prop and name in self.layer_dict:
self.layer_dict[name]["opacity"] = value
elif name in self.style_dict:
layer = self.style_dict[name]
if "paint" in layer:
layer["paint"][prop] = value
set_pitch(self, pitch, **kwargs)
¶
Sets the pitch of the map.
This function sets the pitch of the map to the specified value. The pitch is the angle of the camera measured in degrees where 0 is looking straight down, and 60 is looking towards the horizon. Additional keyword arguments can be provided to control the pitch. For more information, see https://maplibre.org/maplibre-gl-js/docs/API/classes/Map/#setpitch
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
pitch |
float |
The pitch value to set. |
required |
**kwargs |
Any |
Additional keyword arguments to control the pitch. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def set_pitch(self, pitch: float, **kwargs: Any) -> None:
"""
Sets the pitch of the map.
This function sets the pitch of the map to the specified value. The pitch is the
angle of the camera measured in degrees where 0 is looking straight down, and 60 is
looking towards the horizon. Additional keyword arguments can be provided to control
the pitch. For more information, see https://maplibre.org/maplibre-gl-js/docs/API/classes/Map/#setpitch
Args:
pitch (float): The pitch value to set.
**kwargs (Any): Additional keyword arguments to control the pitch.
Returns:
None
"""
super().add_call("setPitch", pitch, **kwargs)
set_visibility(self, name, visible)
¶
Set the visibility of a layer.
This method sets the visibility of the specified layer to the specified value.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
name |
str |
The name of the layer. |
required |
visible |
bool |
The visibility value to set. |
required |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def set_visibility(self, name: str, visible: bool) -> None:
"""
Set the visibility of a layer.
This method sets the visibility of the specified layer to the specified value.
Args:
name (str): The name of the layer.
visible (bool): The visibility value to set.
Returns:
None
"""
super().set_visibility(name, visible)
self.layer_dict[name]["visible"] = visible
set_zoom(self, zoom=None)
¶
Sets the zoom level of the map.
This method sets the zoom level of the map to the specified value.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
zoom |
int |
The zoom level of the map. |
None |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def set_zoom(self, zoom: Optional[int] = None) -> None:
"""
Sets the zoom level of the map.
This method sets the zoom level of the map to the specified value.
Args:
zoom (int): The zoom level of the map.
Returns:
None
"""
self.add_call("setZoom", zoom)
show(self)
¶
Displays the map.
Source code in leafmap/maplibregl.py
def show(self) -> None:
"""Displays the map."""
return Container(self)
style_layer_interact(self, id=None)
¶
Create a layer widget for changing the visibility and opacity of a style layer.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
id |
str |
The is of the layer. |
None |
Returns:
| Type | Description |
|---|---|
ipywidgets.Widget |
The layer widget. |
Source code in leafmap/maplibregl.py
def style_layer_interact(self, id=None):
"""Create a layer widget for changing the visibility and opacity of a style layer.
Args:
id (str): The is of the layer.
Returns:
ipywidgets.Widget: The layer widget.
"""
import ipywidgets as widgets
layer_ids = list(self.style_dict.keys())
layer_ids.sort()
if id is None:
id = layer_ids[0]
elif id not in layer_ids:
raise ValueError(f"Layer {id} not found.")
layer = self.style_dict[id]
layer_type = layer.get("type")
style = {"description_width": "initial"}
dropdown = widgets.Dropdown(
options=layer_ids,
value=id,
description="Layer",
style=style,
)
visibility = layer.get("layout", {}).get("visibility", "visible")
if visibility == "visible":
visibility = True
else:
visibility = False
checkbox = widgets.Checkbox(
description="Visible",
value=visibility,
style=style,
layout=widgets.Layout(width="120px"),
)
opacity = layer.get("paint", {}).get(f"{layer_type}-opacity", 1.0)
opacity_slider = widgets.FloatSlider(
description="Opacity",
min=0,
max=1,
step=0.01,
value=opacity,
style=style,
)
def extract_rgb(rgba_string):
import re
# Extracting the RGB values using regex
rgb_tuple = tuple(map(int, re.findall(r"\d+", rgba_string)[:3]))
return rgb_tuple
color = layer.get("paint", {}).get(f"{layer_type}-color", "white")
if color.startswith("rgba"):
color = extract_rgb(color)
color = check_color(color)
color_picker = widgets.ColorPicker(
concise=True,
value=color,
style=style,
)
def color_picker_event(change):
self.set_paint_property(dropdown.value, f"{layer_type}-color", change.new)
color_picker.observe(color_picker_event, "value")
hbox = widgets.HBox(
[dropdown, checkbox, opacity_slider, color_picker],
layout=widgets.Layout(width="750px"),
)
def dropdown_event(change):
name = change.new
layer = self.style_dict[name]
layer_type = layer.get("type")
visibility = layer.get("layout", {}).get("visibility", "visible")
if visibility == "visible":
visibility = True
else:
visibility = False
checkbox.value = visibility
opacity = layer.get("paint", {}).get(f"{layer_type}-opacity", 1.0)
opacity_slider.value = opacity
color = layer.get("paint", {}).get(f"{layer_type}-color", "white")
if color.startswith("rgba"):
color = extract_rgb(color)
color = check_color(color)
if color:
color_picker.value = color
color_picker.disabled = False
else:
color_picker.value = "white"
color_picker.disabled = True
dropdown.observe(dropdown_event, "value")
def update_layer(change):
self.set_layout_property(
dropdown.value, "visibility", "visible" if checkbox.value else "none"
)
self.set_paint_property(
dropdown.value, f"{layer_type}-opacity", opacity_slider.value
)
checkbox.observe(update_layer, "value")
opacity_slider.observe(update_layer, "value")
return hbox
to_html(self, output=None, title='My Awesome Map', width='100%', height='100%', replace_key=False, remove_port=True, preview=False, overwrite=False, **kwargs)
¶
Render the map to an HTML page.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
output |
str |
The output HTML file. If None, the HTML content is returned as a string. Defaults |
None |
title |
str |
The title of the HTML page. Defaults to 'My Awesome Map'. |
'My Awesome Map' |
width |
str |
The width of the map. Defaults to '100%'. |
'100%' |
height |
str |
The height of the map. Defaults to '100%'. |
'100%' |
replace_key |
bool |
Whether to replace the API key in the HTML.
If True, the API key is replaced with the public API key.
The API key is read from the environment variable |
False |
remove_port |
bool |
Whether to remove the port number from the HTML. |
True |
preview |
bool |
Whether to preview the HTML file in a web browser. Defaults to False. |
False |
overwrite |
bool |
Whether to overwrite the output file if it already exists. |
False |
**kwargs |
Additional keyword arguments that are passed to the
|
{} |
Returns:
| Type | Description |
|---|---|
str |
The HTML content of the map. |
Source code in leafmap/maplibregl.py
def to_html(
self,
output: str = None,
title: str = "My Awesome Map",
width: str = "100%",
height: str = "100%",
replace_key: bool = False,
remove_port: bool = True,
preview: bool = False,
overwrite: bool = False,
**kwargs,
):
"""Render the map to an HTML page.
Args:
output (str, optional): The output HTML file. If None, the HTML content
is returned as a string. Defaults
title (str, optional): The title of the HTML page. Defaults to 'My Awesome Map'.
width (str, optional): The width of the map. Defaults to '100%'.
height (str, optional): The height of the map. Defaults to '100%'.
replace_key (bool, optional): Whether to replace the API key in the HTML.
If True, the API key is replaced with the public API key.
The API key is read from the environment variable `MAPTILER_KEY`.
The public API key is read from the environment variable `MAPTILER_KEY_PUBLIC`.
Defaults to False.
remove_port (bool, optional): Whether to remove the port number from the HTML.
preview (bool, optional): Whether to preview the HTML file in a web browser.
Defaults to False.
overwrite (bool, optional): Whether to overwrite the output file if it already exists.
**kwargs: Additional keyword arguments that are passed to the
`maplibre.ipywidget.MapWidget.to_html()` method.
Returns:
str: The HTML content of the map.
"""
if isinstance(height, int):
height = f"{height}px"
if isinstance(width, int):
width = f"{width}px"
if "style" not in kwargs:
kwargs["style"] = f"width: {width}; height: {height};"
else:
kwargs["style"] += f"width: {width}; height: {height};"
html = super().to_html(title=title, **kwargs)
if isinstance(height, str) and ("%" in height):
style_before = """</style>\n"""
style_after = (
"""html, body {height: 100%; margin: 0; padding: 0;} #pymaplibregl {width: 100%; height: """
+ height
+ """;}\n</style>\n"""
)
html = html.replace(style_before, style_after)
div_before = f"""<div id="pymaplibregl" style="width: 100%; height: {height};"></div>"""
div_after = f"""<div id="pymaplibregl"></div>"""
html = html.replace(div_before, div_after)
div_before = f"""<div id="pymaplibregl" style="height: {height};"></div>"""
html = html.replace(div_before, div_after)
if replace_key or (os.getenv("MAPTILER_REPLACE_KEY") is not None):
key_before = get_api_key("MAPTILER_KEY")
key_after = get_api_key("MAPTILER_KEY_PUBLIC")
if key_after is not None:
html = html.replace(key_before, key_after)
if remove_port:
html = remove_port_from_string(html)
if output is None:
output = os.getenv("MAPLIBRE_OUTPUT", None)
if output:
if not overwrite and os.path.exists(output):
import glob
num = len(glob.glob(output.replace(".html", "*.html")))
output = output.replace(".html", f"_{num}.html")
with open(output, "w") as f:
f.write(html)
if preview:
import webbrowser
webbrowser.open(output)
else:
return html
to_streamlit(self, width=None, height=600, scrolling=False, **kwargs)
¶
Convert the map to a Streamlit component.
This function converts the map to a Streamlit component by encoding the HTML representation of the map as base64 and embedding it in an iframe. The width, height, and scrolling parameters control the appearance of the iframe.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
width |
Optional[int] |
The width of the iframe. If None, the width will be determined by Streamlit. |
None |
height |
Optional[int] |
The height of the iframe. Default is 600. |
600 |
scrolling |
Optional[bool] |
Whether the iframe should be scrollable. Default is False. |
False |
**kwargs |
Any |
Additional arguments to pass to the Streamlit iframe function. |
{} |
Returns:
| Type | Description |
|---|---|
Any |
The Streamlit component. |
Exceptions:
| Type | Description |
|---|---|
Exception |
If there is an error in creating the Streamlit component. |
Source code in leafmap/maplibregl.py
def to_streamlit(
self,
width: Optional[int] = None,
height: Optional[int] = 600,
scrolling: Optional[bool] = False,
**kwargs: Any,
) -> Any:
"""
Convert the map to a Streamlit component.
This function converts the map to a Streamlit component by encoding the
HTML representation of the map as base64 and embedding it in an iframe.
The width, height, and scrolling parameters control the appearance of
the iframe.
Args:
width (Optional[int]): The width of the iframe. If None, the width
will be determined by Streamlit.
height (Optional[int]): The height of the iframe. Default is 600.
scrolling (Optional[bool]): Whether the iframe should be scrollable.
Default is False.
**kwargs (Any): Additional arguments to pass to the Streamlit iframe
function.
Returns:
Any: The Streamlit component.
Raises:
Exception: If there is an error in creating the Streamlit component.
"""
try:
import streamlit.components.v1 as components
import base64
raw_html = self.to_html().encode("utf-8")
raw_html = base64.b64encode(raw_html).decode()
return components.iframe(
f"data:text/html;base64,{raw_html}",
width=width,
height=height,
scrolling=scrolling,
**kwargs,
)
except Exception as e:
raise Exception(e)
zoom_to(self, zoom, options={}, **kwargs)
¶
Zooms the map to a specified zoom level.
This function zooms the map to the specified zoom level. Additional options and keyword arguments can be provided to control the zoom. For more information, see https://maplibre.org/maplibre-gl-js/docs/API/classes/Map/#zoomto
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
zoom |
float |
The zoom level to zoom to. |
required |
options |
Dict[str, Any] |
Additional options to control the zoom. Defaults to {}. |
{} |
**kwargs |
Any |
Additional keyword arguments to control the zoom. |
{} |
Returns:
| Type | Description |
|---|---|
None |
None |
Source code in leafmap/maplibregl.py
def zoom_to(self, zoom: float, options: Dict[str, Any] = {}, **kwargs: Any) -> None:
"""
Zooms the map to a specified zoom level.
This function zooms the map to the specified zoom level. Additional options and keyword
arguments can be provided to control the zoom. For more information, see
https://maplibre.org/maplibre-gl-js/docs/API/classes/Map/#zoomto
Args:
zoom (float): The zoom level to zoom to.
options (Dict[str, Any], optional): Additional options to control the zoom. Defaults to {}.
**kwargs (Any): Additional keyword arguments to control the zoom.
Returns:
None
"""
super().add_call("zoomTo", zoom, options, **kwargs)
construct_maptiler_style(style, api_key=None)
¶
Constructs a URL for a MapTiler style with an optional API key.
This function generates a URL for accessing a specific MapTiler map style. If an API key is not provided, it attempts to retrieve one using a predefined method. If the request to MapTiler fails, it defaults to a "dark-matter" style.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
style |
str |
The name of the MapTiler style to be accessed. It can be one of the following: aquarelle, backdrop, basic, bright, dataviz, landscape, ocean, openstreetmap, outdoor, satellite, streets, toner, topo, winter, etc. |
required |
api_key |
Optional[str] |
An optional API key for accessing MapTiler services. If None, the function attempts to retrieve the API key using a predefined method. Defaults to None. |
None |
Returns:
| Type | Description |
|---|---|
str |
The URL for the requested MapTiler style. If the request fails, returns a URL for the "dark-matter" style. |
Exceptions:
| Type | Description |
|---|---|
requests.exceptions.RequestException |
If the request to the MapTiler API fails. |
Source code in leafmap/maplibregl.py
def construct_maptiler_style(style: str, api_key: Optional[str] = None) -> str:
"""
Constructs a URL for a MapTiler style with an optional API key.
This function generates a URL for accessing a specific MapTiler map style. If an API key is not provided,
it attempts to retrieve one using a predefined method. If the request to MapTiler fails, it defaults to
a "dark-matter" style.
Args:
style (str): The name of the MapTiler style to be accessed. It can be one of the following:
aquarelle, backdrop, basic, bright, dataviz, landscape, ocean, openstreetmap, outdoor,
satellite, streets, toner, topo, winter, etc.
api_key (Optional[str]): An optional API key for accessing MapTiler services. If None, the function
attempts to retrieve the API key using a predefined method. Defaults to None.
Returns:
str: The URL for the requested MapTiler style. If the request fails, returns a URL for the "dark-matter" style.
Raises:
requests.exceptions.RequestException: If the request to the MapTiler API fails.
"""
if api_key is None:
api_key = get_api_key("MAPTILER_KEY")
url = f"https://api.maptiler.com/maps/{style}/style.json?key={api_key}"
response = requests.get(url)
if response.status_code != 200:
print(
"Failed to retrieve the MapTiler style. Defaulting to 'dark-matter' style."
)
url = "dark-matter"
return url
maptiler_3d_style(style='satellite', exaggeration=1, tile_size=512, tile_type=None, max_zoom=24, hillshade=True, token='MAPTILER_KEY', api_key=None)
¶
Get the 3D terrain style for the map.
This function generates a style dictionary for the map that includes 3D terrain features. The terrain exaggeration and API key can be specified. If the API key is not provided, it will be retrieved using the specified token.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
style |
str |
The name of the MapTiler style to be accessed. It can be one of the following: aquarelle, backdrop, basic, bright, dataviz, hillshade, landscape, ocean, openstreetmap, outdoor, satellite, streets, toner, topo, winter, etc. |
'satellite' |
exaggeration |
float |
The terrain exaggeration. Defaults to 1. |
1 |
tile_size |
int |
The size of the tiles. Defaults to 512. |
512 |
tile_type |
str |
The type of the tiles. It can be one of the following: webp, png, jpg. Defaults to None. |
None |
max_zoom |
int |
The maximum zoom level. Defaults to 24. |
24 |
hillshade |
bool |
Whether to include hillshade. Defaults to True. |
True |
token |
str |
The token to use to retrieve the API key. Defaults to "MAPTILER_KEY". |
'MAPTILER_KEY' |
api_key |
Optional[str] |
The API key. If not provided, it will be retrieved using the token. |
None |
Returns:
| Type | Description |
|---|---|
Dict[str, Any] |
The style dictionary for the map. |
Exceptions:
| Type | Description |
|---|---|
ValueError |
If the API key is not provided and cannot be retrieved using the token. |
Source code in leafmap/maplibregl.py
def maptiler_3d_style(
style="satellite",
exaggeration: float = 1,
tile_size: int = 512,
tile_type: str = None,
max_zoom: int = 24,
hillshade: bool = True,
token: str = "MAPTILER_KEY",
api_key: Optional[str] = None,
) -> Dict[str, Any]:
"""
Get the 3D terrain style for the map.
This function generates a style dictionary for the map that includes 3D terrain features.
The terrain exaggeration and API key can be specified. If the API key is not provided,
it will be retrieved using the specified token.
Args:
style (str): The name of the MapTiler style to be accessed. It can be one of the following:
aquarelle, backdrop, basic, bright, dataviz, hillshade, landscape, ocean, openstreetmap, outdoor,
satellite, streets, toner, topo, winter, etc.
exaggeration (float, optional): The terrain exaggeration. Defaults to 1.
tile_size (int, optional): The size of the tiles. Defaults to 512.
tile_type (str, optional): The type of the tiles. It can be one of the following:
webp, png, jpg. Defaults to None.
max_zoom (int, optional): The maximum zoom level. Defaults to 24.
hillshade (bool, optional): Whether to include hillshade. Defaults to True.
token (str, optional): The token to use to retrieve the API key. Defaults to "MAPTILER_KEY".
api_key (Optional[str], optional): The API key. If not provided, it will be retrieved using the token.
Returns:
Dict[str, Any]: The style dictionary for the map.
Raises:
ValueError: If the API key is not provided and cannot be retrieved using the token.
"""
if api_key is None:
api_key = get_api_key(token)
if api_key is None:
print("An API key is required to use the 3D terrain feature.")
return "dark-matter"
if style == "terrain":
style = "satellite"
elif style == "hillshade":
style = None
if tile_type is None:
image_types = {
"aquarelle": "webp",
"backdrop": "png",
"basic": "png",
"basic-v2": "png",
"bright": "png",
"bright-v2": "png",
"dataviz": "png",
"hybrid": "jpg",
"landscape": "png",
"ocean": "png",
"openstreetmap": "jpg",
"outdoor": "png",
"outdoor-v2": "png",
"satellite": "jpg",
"toner": "png",
"toner-v2": "png",
"topo": "png",
"topo-v2": "png",
"winter": "png",
"winter-v2": "png",
}
if style in image_types:
tile_type = image_types[style]
else:
tile_type = "png"
layers = []
if isinstance(style, str):
layers.append({"id": style, "type": "raster", "source": style})
if hillshade:
layers.append(
{
"id": "hillshade",
"type": "hillshade",
"source": "hillshadeSource",
"layout": {"visibility": "visible"},
"paint": {"hillshade-shadow-color": "#473B24"},
}
)
if style == "ocean":
sources = {
"terrainSource": {
"type": "raster-dem",
"url": f"https://api.maptiler.com/tiles/ocean-rgb/tiles.json?key={api_key}",
"tileSize": tile_size,
},
"hillshadeSource": {
"type": "raster-dem",
"url": f"https://api.maptiler.com/tiles/ocean-rgb/tiles.json?key={api_key}",
"tileSize": tile_size,
},
}
else:
sources = {
"terrainSource": {
"type": "raster-dem",
"url": f"https://api.maptiler.com/tiles/terrain-rgb-v2/tiles.json?key={api_key}",
"tileSize": tile_size,
},
"hillshadeSource": {
"type": "raster-dem",
"url": f"https://api.maptiler.com/tiles/terrain-rgb-v2/tiles.json?key={api_key}",
"tileSize": tile_size,
},
}
if isinstance(style, str):
sources[style] = {
"type": "raster",
"tiles": [
"https://api.maptiler.com/maps/"
+ style
+ "/{z}/{x}/{y}."
+ tile_type
+ "?key="
+ api_key
],
"tileSize": tile_size,
"attribution": "© MapTiler",
"maxzoom": max_zoom,
}
style = {
"version": 8,
"sources": sources,
"layers": layers,
"terrain": {"source": "terrainSource", "exaggeration": exaggeration},
}
return style