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Re: [igraph] Leading Eigenvector Community

From: Gabor Csardi
Subject: Re: [igraph] Leading Eigenvector Community
Date: Wed, 23 Apr 2008 20:51:18 +0200
User-agent: Mutt/1.5.13 (2006-08-11)

On Wed, Apr 23, 2008 at 07:16:12PM +0200, Tamas Nepusz wrote:
> >My guess is because it's calculating matrix eigenvectors, there's an  
> >upper limit for graph size?
> Theoretically there isn't any upper limit, but the eigenvector  
> calculations may fail to converge if your network is large. You have  
> to explicitly instruct the ARPACK solver to allow more iterations  
> using the options argument of leading.eigenvector.community -- I'm not  
> sure about the details, however, since I don't use the R interface.  
> See the documentation for more details. I guess you'll have to modify  
> the variable called igraph.arpack.default (more precisely its element  
> called "maxiter").

Just supply the 'options' argument to leading.eigenvector.community,

leading.eigenvector.community(g, options=list(maxiter=1000))


> -- 
> Tamas
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Csardi Gabor <address@hidden>    UNIL DGM

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