Plot a basemap

Kaufmann, 2021.

[1]:

from geometron.plot import plot_basemap

Define extent in EPSG:4326 coordinates (WGS84) and a cache directory for reusing downloaded tiles

[2]:

extent = (3.6, 4.1, 50.32, 50.52)
cache_dir = './tmp_files/.tiles_cache'

Plot the basemap in a matplotlib.pyplot axes

The defaut tile server and display parameters are used here…

[3]:

ax = plot_basemap(extent, figsize=(20,20), cache_dir=cache_dir)

../../_images/examples_mapping_Basemaps_Plot_basemap_5_0.png

When using a cache_dir images retrieved from the server are stored in a cache directory on your disk. If the same tile is needed again, the cached tile will be used. The process limits the number of requests to the servers and speeds-up the display.

Several other named tile servers are available

[4]:

ax = plot_basemap(extent, figsize=(20,20), cache_dir=cache_dir, xyz_server='openstreetmap')

../../_images/examples_mapping_Basemaps_Plot_basemap_8_0.png

[5]:

ax = plot_basemap(extent, figsize=(20,20), cache_dir=cache_dir, xyz_server='google terrain')

../../_images/examples_mapping_Basemaps_Plot_basemap_9_0.png

[6]:

ax = plot_basemap(extent, figsize=(20,20), cache_dir=cache_dir, xyz_server='esri world imagery')

../../_images/examples_mapping_Basemaps_Plot_basemap_10_0.png

Extra xyz tile servers can also be used by providing the entire url

[7]:

ax = plot_basemap(extent, figsize=(20,20), cache_dir=cache_dir,
                  xyz_server='http://services.arcgisonline.com/ArcGIS/rest/services/Elevation/World_Hillshade/MapServer/tile/{z}/{y}/{x}')