Recursive Search for All Possible Paths Between 2 Nodes

Asked by czeslaw on 31 Jan 2018

Latest activity Answered by Peter Cook on 1 Feb 2018

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Hi all,

I am trying to look if there is any existing function or codes that can help me to find all possible paths from a starting node to a target node. The only restrictions is that the traveller cannot travel to any previously travelled path or vertex. I imagine this will need a recursive function if the path has some branches to check all possible paths to destination in each intersection.

The ideal input format would be function(coordinates, NodeConnectivityMatrix, startnode, targetnode).

The ideal output format would contain sets of vectors with NodeIndices describing all possible paths.

Please any suggestion. Thank you.

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Answer by Peter Cook on 1 Feb 2018

You should check out the graph class. https://www.mathworks.com/help/matlab/ref/graph.html

Most common graph operations are implemented

>> methods graph
Methods for class graph:
addedge           centrality        findnode          maxflow           plot              subgraph          
addnode           conncomp          graph             minspantree       reordernodes      
adjacency         degree            incidence         nearest           rmedge            
bctree            dfsearch          isisomorphic      neighbors         rmnode            
bfsearch          distances         isomorphism       numedges          shortestpath      
biconncomp        findedge          laplacian         numnodes          shortestpathtree

If need more graph methods than that and you have the python networkx library somewhere on your machine, you can create a nx graph like this and use whatever nx methods you want with dot notation:

g = py.networkx.Graph()

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