momepy.proportion#
- momepy.proportion(graph, radius=5, three=None, four=None, dead=None, degree='degree', distance=None, verbose=True)[source]#
Calculates the proportion of intersection types for subgraph around each node if radius is set, or for whole graph, if
radius=None
. A subgraph is generated around each node within set radius. Ifdistance=None
, the radius will define topological distance, otherwise it uses values indistance
attribute.- Parameters:
- graphnetworkx.Graph
A Graph representing a street network. Ideally generated from GeoDataFrame using
momepy.gdf_to_nx()
.- radius: int
Include all neighbors of distance <= radius from
n
.- threestr, optional
The attribute name for 3-way intersections proportion.
- fourstr, optional
The attribute name for 4-way intersections proportion.
- deadstr, optional
The attribute name for deadends proportion.
- degreestr
The name of attribute of node degree (
momepy.node_degree()
).- distancestr, optional
Use specified edge data key as distance. For example, setting
distance=’weight’
will use the edgeweight
to measure the distance from the noden
.- verbosebool (default True)
If
True
, shows progress bars in loops and indication of steps.
- Returns:
- netxGraph
A networkx.Graph object if
radius
is set.- resultdict
A dict with proportions for the graph if
radius=None
.
Examples
>>> network_graph = mm.proportion( ... network_graph, three='threeway', four='fourway', dead='deadends' ... ) # noqa