Re: [igraph] write to file problem

[Tamas Nepusz]

Your code should work; actually, it works fine for me on Linux. Which OS
are you using?

Just one comment, though: the time required by add_edges() is almost the
same for one edge as for many edges, so I'd probably generate a list of
edges to be added and then pass that list to add_edges() at once:

g.add_edges([(v.index, ...) for v in random.sample(...)])

-- 
T.

On 01/20/2011 03:49 PM, Simone Gabbriellini wrote:
> Hello list,
>
> I am trying to write to file a graph that I have just generated with:
>
> # build graph
> g = igraph.Graph(top+bottom, directed = False)
> # add attributes
> g.vs["type"] = [int(i >= top) for i in xrange(top+bottom)]
> g.vs["name"] = [v.index for v in g.vs]
> # add some random edges between top and bottom nodes
> [g.add_edges((v.index, random.choice(g.vs(type=1)).index)) for v in
> random.sample(g.vs(type=0), bottom)]
> # write file
> g.write_graphml('test.graphml')
>
> but nothing happens... is there something I am missing in the writing method?
>
> Best regards,
> Simone
>
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