momepy.proportion(graph, radius=5, three=None, four=None, dead=None, degree='degree', distance=None)[source]¶Calculates the proportion of intersection types for subgraph around each node.
Subgraph is generated around each node within set radius. If distance=None, radius will define topological distance, otherwise it uses values in distance attribute.
Graph representing street network.
Ideally genereated from GeoDataFrame using momepy.gdf_to_nx()
number of topological steps defining the extent of subgraph
attribute name for 3-way intersections proportion
attribute name for 4-way intersections proportion
attribute name for deadends proportion
name of attribute of node degree (momepy.node_degree())
Use specified edge data key as distance. For example, setting distance=’weight’ will use the edge weight to measure the distance from the node n.
networkx.Graph
Examples
>>> network_graph = mm.proportion(network_graph, three='threeway', four='fourway', dead='deadends')