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Re: [igraph] Question on igraph_community_fastgreedy
From: |
Gabor Csardi |
Subject: |
Re: [igraph] Question on igraph_community_fastgreedy |
Date: |
Wed, 27 Feb 2008 22:44:54 +0100 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
There is a MATRIX macro:
MATRIX(m, i, j) is the (i,j) element of 'm', you can also assign to it:
MATRIX(m, i, j) = 0;
See more here:
http://cneurocvs.rmki.kfki.hu/igraph/doc/html/igraph-Matrices.html
Feel free to ask if you have more questions,
G.
On Wed, Feb 27, 2008 at 04:39:15PM -0500, Richard Geddes wrote:
> Thanks.
>
> One other question: I've learned how to play with the igraph_vector_t
> container... I think Gabor showed me by example a while back... how can
> I iterate through the igraph_matrix_t? Is there a generalized
> description of the igraph containers?
>
> R
>
> Tamas Nepusz wrote:
> >> const igraph_vector_t *weights
> >>
> >> argument has no description... are these the weights described as the
> >> heuristics in the Wakita paper?
> > No, the heuristics described in the Wakita paper are still waiting to
> > be implemented... :( These are simply edge weights. In the weighted
> > case, the "degrees" of the vertices are defined as the sum of the
> > weights of their adjacent edges, and m (in the original formula) is
> > replaced by the sum of the weights along all the edges. This extension
> > was briefly mentioned in the original paper of Newman.
> >
> >> Also, if I'm not interested in weights, can I use NULL?
> > Yes.
> >
>
>
> _______________________________________________
> igraph-help mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/igraph-help
--
Csardi Gabor <address@hidden> UNIL DGM
- [igraph] Question on igraph_community_fastgreedy, Richard Geddes, 2008/02/27
- Re: [igraph] Question on igraph_community_fastgreedy, Tamas Nepusz, 2008/02/27
- Re: [igraph] Question on igraph_community_fastgreedy, Richard Geddes, 2008/02/27
- Re: [igraph] Question on igraph_community_fastgreedy,
Gabor Csardi <=
- RE: [igraph] Question on igraph_community_fastgreedy, Thomas F. Brantle, 2008/02/27
- Re: [igraph] Question on igraph_community_fastgreedy, Tamas Nepusz, 2008/02/27
- RE: [igraph] Question on igraph_community_fastgreedy, Thomas F. Brantle, 2008/02/27
- Re: [igraph] Question on igraph_community_fastgreedy, Tamas Nepusz, 2008/02/27
- Re: [igraph] Question on igraph_community_fastgreedy, Richard Geddes, 2008/02/28
- Re: [igraph] Question on igraph_community_fastgreedy, Gabor Csardi, 2008/02/28