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Re: [igraph] Community detection in unconnected graph
From: |
Gabor Csardi |
Subject: |
Re: [igraph] Community detection in unconnected graph |
Date: |
Mon, 31 Mar 2008 22:55:47 +0200 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
On Mon, Mar 31, 2008 at 11:54:26AM +0200, Tamas Nepusz wrote:
> >It is a pity that my graph is not connected, so the
> >walktrap.community and spinglass.community can not handle it.
> >However, I am only interested in the largest cluster of the graph,
> >how can I do that?
> >
> Use clusters(...) to determine the connected components of the graph,
> then find the largest one and use subgraph(...) to extract it. See:
> http://cneurocvs.rmki.kfki.hu/igraph/doc/R/clusters.html
Right, it should be something like:
cl <- clusters(g)
subgraph(g, which(cl$membership == which.max(cl$csize)-1)-1)
G.
> --
> T.
>
>
>
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--
Csardi Gabor <address@hidden> UNIL DGM