Re: [igraph] Problem with dimacs file

[Gábor Csárdi]

On Tue, Nov 12, 2013 at 2:52 PM, Raphael Clifford <address@hidden> wrote:
[...]
> 1624, in Read_DIMACS
>     graph, source, target, cap = super(Graph, cls).Read_DIMACS(f, directed)
> igraph._igraph.InternalError: Error at foreign.c:820: 'a' lines are
> allowed only in MAX problem files, Parse error
>
> What is igraph expecting as input?

A max-flow problem file.
http://igraph.sourceforge.net/doc/python/igraph.Graph-class.html#Read_DIMACS

There are a bunch of different DIMACS files, and yours (sp) is not
supported. You can report a bug for this at
http://github.com/igraph/igraph/issues
It helps if you can collect the various DIMACS file versions.

Thanks,
Gabor

> Raphael
>
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