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Re: [igraph] weight in two-mode to one-mode conversion

From: Gábor Csárdi
Subject: Re: [igraph] weight in two-mode to one-mode conversion
Date: Thu, 7 Oct 2010 10:45:33 +0200

Simone, this is included in the 0.6 version:

M <- matrix( sample(0:1, 35, replace=TRUE), 5)
rownames(M) <- letters[1:5]
colnames(M) <- LETTERS[1:7]
g <- graph.incidence(M)

The only difficulty is that the 0.6 R package is not compatible with
the 0.5 version, because it has 1-based vertex and edge id indexing.

But you can download a little bit older version of the 0.6 R package,
that already has this feature, but not yet the 1-based indexing, from

I have just tried this and it seems to work fine.


On Wed, Oct 6, 2010 at 5:08 PM, Simone Gabbriellini
<address@hidden> wrote:
> Hello List,
> I would like to store the number of affiliations each dyads share in a 
> two-mode networks.
> I am wondering if there's a way, converting from the two-mode to the one-mode 
> using bipartite.projection(), to add a weight parameter to the links in the 
> one-mode that account for this.
> I am using  the R interface.
> thanks in advance and regards,
> Simone
> _______________________________________________
> igraph-help mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/igraph-help

Gabor Csardi <address@hidden>     UNIL DGM

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