momepy.straightness_centrality¶

momepy.
straightness_centrality
(graph, weight='mm_len', normalized=True, name='straightness', radius=None, distance=None)[source]¶ Calculates the straightness centrality for nodes.
\[C_{S}(i)=\frac{1}{n1} \sum_{j \in V, j \neq i} \frac{d_{i j}^{E u}}{d_{i j}}\]where \(\mathrm{d}^{\mathrm{E} \mathrm{u}}_{\mathrm{ij}}\) is the Euclidean distance between nodes i and j along a straight line.
Adapted from [PCL06].
 Parameters
 graphnetworkx.Graph
Graph representing street network. Ideally generated from GeoDataFrame using
momepy.gdf_to_nx()
 weightstr (default ‘mm_len’)
attribute holding length of edge
 normalizedbool
normalize to number of nodes1 in connected part (for local straightness is recommended to set to normalized False)
 namestr, optional
calculated attribute name
 radius: int
Include all neighbors of distance <= radius from n
 distancestr, optional
Use specified edge data key as distance. For example, setting
distance=’weight’
will use the edgeweight
to measure the distance from the node n during ego_graph generation.
 Returns
 Graph
networkx.Graph
Examples
>>> network_graph = mm.straightness_centrality(network_graph)