Graph matrix into network flow

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Hello,

I have this marix:

M=matrix(ZZ,6,9,[[1,1,1,0,0,0,0,0,0],[0,0,0,1,1,1,0,0,0],[0,0,0,0,0,0,1,1,1],[-1,0,0,-1,0,0,-1,0,0],[0,-1,0,0,-1,0,0,-1,0],[0,0,-1,0,0,-1,0,0,-1]])

and I am looking to get something like this:

image description

How can I do it?

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Hi,

If you just want the digraph, without the weights you can use

sage: D=DiGraph(M,format='incidence_matrix')

If you want to incorporate weights, you can try something like

sage: A=Matrix(ZZ,[[0,0,0,1,2,3],[0,0,0,4,5,6],[0,0,0,7,8,9],[0,0,0,0,0,0],[0,0,0,0,0,0],[0,0,0,0,0,0]])
sage: D=DiGraph(A,format='weighted_adjacency_matrix')

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posted Aug 06 '12

fidbc

908 ● 2 ● 9 ● 27

Thank you! I do no know if I am missing some package or something but I cannot make the graph 'behave' like the picture above.

brenogil (Aug 07 '12)

1

If you want the vertex labels to appear as in your picture you might want to consider using the relabel method. For the edge labels to appear in the plot you can send an edge_labels=True argument to the plot method.

fidbc (Aug 07 '12)

Thanks for the hand! I'll pay you a beer whenever I am in Canada!

brenogil (Aug 08 '12)

Graph matrix into network flow

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