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Re: [igraph] two-mode network in igraph

From: Tamas Nepusz
Subject: Re: [igraph] two-mode network in igraph
Date: Fri, 24 Sep 2010 12:09:33 +0100
User-agent: Mutt/1.5.20 (2009-06-14)

> when I run this I have an error:
> bipartite<-graph.bipartite(vertices, edges, directed=TRUE)
> Errore in graph.bipartite(vertices, edges, directed = TRUE) : 
>   At bipartite.c:438 : Invalid (negative) vertex id, Invalid vertex id
Your vertex IDs seem to be strings and not numbers, maybe that is the


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