Add Stadia tiles

[geofurb]

Leaflet has a few Stadia tiles that don't seem to work by passing the URL to Contextily.

http://leaflet-extras.github.io/leaflet-providers/preview/#filter=Stadia.AlidadeSmooth
http://leaflet-extras.github.io/leaflet-providers/preview/#filter=Stadia.AlidadeSmoothDark
http://leaflet-extras.github.io/leaflet-providers/preview/#filter=Stadia.OSMBright
http://leaflet-extras.github.io/leaflet-providers/preview/#filter=Stadia.Outdoors

Not sure what the incompatibility is. I get PIL.UnidentifiedImageError: cannot identify image file <_io.BytesIO object at 0x000001E410D79630> when trying the URLs in bounds2img.

[martinfleis]

@geofurb providers management is moving to a separate package, I have transferred the issue.

We have recently fetched new providers from leaflet, so these mentioned here are part of the current package offered by xyzervices and will be available in the next release of contextily as well.

[martinfleis]

The loading issue seems to be due to some restrictions on Stadia side. If you try to access the tile directly (e.g. https://tiles.stadiamaps.com/tiles/alidade_smooth/7/60/38.png), you get error 403 Forbidden even without contextily being involved. You can normally load the tile this way with no issue. I don't really understand how come it works in the leaflet presentation.

[martinfleis]

Just FYI, Stadia maps may or may not require an access token - https://docs.stadiamaps.com/#api-keys. It seems that within folium/leaflet, tiles will work but within contextily they won't.

[martinfleis]

Stadia tiles are now part of the leaflet-based JSON.