altair.topo_feature(url, feature, **kwargs)

A convenience function for extracting features from a topojson url

url : string

An URL from which to load the data set.

feature : string

The name of the TopoJSON object set to convert to a GeoJSON feature collection. For example, in a map of the world, there may be an object set named “countries”. Using the feature property, we can extract this set and generate a GeoJSON feature object for each country.

**kwargs :

additional keywords passed to TopoDataFormat