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How to get a graph back from canonical_label graph6_string

asked 2012-12-04 08:46:46 -0500

dngraph gravatar image

updated 2012-12-04 09:31:40 -0500

I have a list of graphs that I take their canonical_label 's graph6_string and then I save that list to a file.

Now I want to open that file and get sage graphs from the list of canonical_label graph6_string

How can I do it?

Thank you!

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answered 2012-12-04 13:04:05 -0500

fidbc gravatar image

updated 2012-12-04 13:13:09 -0500

You could define the following function.

def get_graphs_from_file(filename):
    f = open( filename, 'r')
    graph_list=[ Graph( l[:-1] ) for l in f ]
    f.close()
    return graph_list

And now, assuming the file graphs.g6 contains a graph6 string per line, just run

sage: L=get_graphs_from_file( 'graphs.g6')

That should leave you with a list L of graphs.

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Asked: 2012-12-04 08:46:46 -0500

Seen: 551 times

Last updated: Dec 04 '12