[igraph] community structure detection gives modularity to be NAN?

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[igraph] community structure detection gives modularity to be NAN?

From:	Gang Su
Subject:	[igraph] community structure detection gives modularity to be NAN?
Date:	Tue, 27 Jan 2009 15:05:47 -0500
User-agent:	Thunderbird 2.0.0.19 (Windows/20081209)

I used igraph 0.50 before on this before, no problem.

I got a graph, simplified, connected, but all community detectionalgorithms give NaN on the modularity score. I wonder anyone has runinto similar issues?

Thanks developers.

Gang

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