cityImage.identify_regions#

cityImage.identify_regions(dual_graph, edges_gdf, weight=None)[source]#

It identifies regions in the street network, using the dual graph representation. The modularity optimisation technique is used to identify urban regions.

Parameters:

  • dual_graph (Networkx.Graph) – The dual graph of an urban area.

  • edges_gdf (LineString GeoDataFrame) – The (primal) street segments GeoDataFrame.

  • weight (string) – The edges’ attribute to use when extracting the communities. If None is passed, only the topological relations influence the resulting communities.

Returns:

regions – A dictionary where to each primal edgeID (key) corresponds a region code (value).

Return type:

dict