Re: [igraph] Error in using graph.bipartite()

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Thank you

 

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From: Gábor Csárdi

Date: 2014-03-05 22:02

To: Help for igraph users

Subject: Re: [igraph] Error in using graph.bipartite()

This is not how graph.bipartite() works. See the example and especially the graph it creates, at the bottom of http://igraph.org/r/doc/graph.bipartite.html.

Gabor

On Wed, Mar 5, 2014 at 8:26 AM, address@hidden <address@hidden> wrote:

Hi

 

I am using graph.bipartite to generate a bipartite graph.

Here is the source code and the error information:

 

> v<-0:7

> e<-c(0,4,1,6,3,7,2,6,1,5)

> g<-graph.bipartite(v,e)

error in graph.bipartite(v, e) :

  At bipartite.c:497 : Invalid (negative) vertex id, Invalid vertex id

 

Where am I making mistakes?

 

Moreover, I want to convert a directed graph into a bipartite graph by splitting each vertice into two vertices. Is there any function can do this?

 

Thanks

 

best

Xueming

 

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