networkx.single_source_dijkstra_path_length

single_source_dijkstra_path_length(G, source)

Returns the shortest path lengths from source to all other reachable nodes in a weighted graph G.

Returns a dictionary of shortest path lengths keyed by target. Uses Dijkstra’s algorithm.

Parameters:

G : NetworkX graph

source : node label

Starting node for path

See also

single_source_dijkstra

Notes

Edge data must be numerical values for XGraph and XDiGraphs.

Examples

>>> G=nx.path_graph(5)
>>> length=nx.single_source_dijkstra_path_length(G,0)
>>> length[4]
4
>>> print length
{0: 0, 1: 1, 2: 2, 3: 3, 4: 4}