04 cog mosaic

Creating a virtual mosaic of Cloud Optimized GeoTIFFs (COG)

Uncomment the following line to install leafmap if needed.

Important Note: This notebook no longer works. The add_cog_mosaic() has been removed from leafmap. See https://github.com/opengeos/leafmap/issues/180

In [1]:

# !pip install leafmap

# !pip install leafmap

In [2]:

import leafmap

import leafmap

In [3]:

# leafmap.update_package()

# leafmap.update_package()

Create an interactive map.

In [4]:

m = leafmap.Map()

m = leafmap.Map()

For this demo, we will use data from https://www.maxar.com/open-data/california-colorado-fires for mapping California and Colorado fires. A List of COGs can be found at:

• Pre-event: https://github.com/opengeos/leafmap/blob/master/examples/data/cog_pre_event.txt
• Post-event: https://github.com/opengeos/leafmap/blob/master/examples/data/cog_post_event.txt

In [5]:

pre_fire_url = 'https://raw.githubusercontent.com/opengeos/leafmap/master/examples/data/cog_pre_event.txt'

pre_fire_url = 'https://raw.githubusercontent.com/opengeos/leafmap/master/examples/data/cog_pre_event.txt'

Create an XYZ tile layer based on a txt file containing a list of COG URLs.

In [6]:

# leafmap.cog_mosaic_from_file(pre_fire_url)

# leafmap.cog_mosaic_from_file(pre_fire_url)

In [7]:

post_fire_url = 'https://raw.githubusercontent.com/opengeos/leafmap/master/examples/data/cog_post_event.txt'

post_fire_url = 'https://raw.githubusercontent.com/opengeos/leafmap/master/examples/data/cog_post_event.txt'

In [8]:

# leafmap.cog_mosaic_from_file(post_fire_url)

# leafmap.cog_mosaic_from_file(post_fire_url)

Add a COG mosaic tile layer to the map.

In [9]:

# m.add_cog_mosaic_from_file(pre_fire_url, name="Pre-event", show_footprints=True)  #This line might take a while to run

# m.add_cog_mosaic_from_file(pre_fire_url, name="Pre-event", show_footprints=True) #This line might take a while to run

In [10]:

# m.add_cog_mosaic_from_file(post_fire_url, name="Post-event", show_footprints=True)   #This line might take a while to run

# m.add_cog_mosaic_from_file(post_fire_url, name="Post-event", show_footprints=True) #This line might take a while to run

In [11]:

pre_event_tile = (
    'https://titiler.xyz/mosaicjson/anonymous.layer_pqmra/tiles/{z}/{x}/{y}@1x?'
)
m.add_tile_layer(pre_event_tile, name="Pre-event", attribution="Maxar")

pre_event_tile = ( 'https://titiler.xyz/mosaicjson/anonymous.layer_pqmra/tiles/{z}/{x}/{y}@1x?' ) m.add_tile_layer(pre_event_tile, name="Pre-event", attribution="Maxar")

In [12]:

post_event_tile = (
    'https://titiler.xyz/mosaicjson/anonymous.layer_qdano/tiles/{z}/{x}/{y}@1x?'
)
m.add_tile_layer(post_event_tile, name="Post-event", attribution="Maxar")

post_event_tile = ( 'https://titiler.xyz/mosaicjson/anonymous.layer_qdano/tiles/{z}/{x}/{y}@1x?' ) m.add_tile_layer(post_event_tile, name="Post-event", attribution="Maxar")

In [13]:

m.set_center(-122.0828, 37.0317, 11)

m.set_center(-122.0828, 37.0317, 11)

In [14]:

m

m

Out[14]:

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Last update: 2023-04-05
Created: 2021-03-10