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This documents an unmaintained version of NetworkX. Please upgrade to a maintained version and see the current NetworkX documentation.

single_source_dijkstra_path

single_source_dijkstra_path(G, source, cutoff=None, weight='weight')[source]

Compute shortest path between source and all other reachable nodes for a weighted graph.

Parameters:
  • G (NetworkX graph) –
  • source (node) – Starting node for path.
  • weight (string, optional (default=’weight’)) – Edge data key corresponding to the edge weight
  • cutoff (integer or float, optional) – Depth to stop the search. Only paths of length <= cutoff are returned.
Returns:

paths – Dictionary of shortest path lengths keyed by target.
Return type:

dictionary

Examples

>>> G=nx.path_graph(5)
>>> path=nx.single_source_dijkstra_path(G,0)
>>> path[4]
[0, 1, 2, 3, 4]

Notes

Edge weight attributes must be numerical. Distances are calculated as sums of weighted edges traversed.

See also

single_source_dijkstra()