[Bug] [pydeck] Incorrect default map style for Google basemap

[bijanvakili]

Description

By default, pydeck.Deck sets the base map to Carto’s Dark Matter map. As per the documentation, users can set the base map provider to Google setting the map_provider and api_keys parameters as per the documentation:

However, it will still fail to use a Google base map if the map_style parameter is not set explicitly to a value supported by Google. This is not clear from the documentation. This is because the map_style parameter still defaults here to dark which is not supported by Google maps.

Flavors

• Script tag
• React
• Python/Jupyter notebook
• MapboxOverlay
• GoogleMapsOverlay
• CartoLayer
• ArcGIS

Expected Behavior

If map_provider='google_maps', map_style should properly default to "roadmap".

This relation is instead as already specified here in the styles map. It may make sense to simply make a default style per supported provider.

Steps to Reproduce

Instantiate a Deck by following documentation instructions which only specify map_provider and api_keys.

r = pydeck.Deck(
    layers=[...],
    initial_view_state=...,
    map_provider='google_maps',
    api_keys={'google_maps': '...'},
)
r.show()

This causes the call from here to get_from_map_identifier to not find any Google style for dark listed here. The end result is a blank/white basemap.

Environment

• Framework version: pydeck 0.9.1
• Browser: Google Chrome Version 132.0.6834.84 (Official Build) (arm64)
• OS: Mac OS/X

Logs

None