Re: [R] igraph and tkgraph

From: Gábor Csárdi <csardi.gabor_at_gmail.com>
Date: Fri, 14 Nov 2008 14:02:29 +0100

Tom, you mean 'tkplot' in the igraph package? Look at ?igraph.plotting on how to set up plotting parameters, e.g. if you want different line types for the positive/negative relations, then you can make use of the 'lty' parameter:

A <- matrix(sample(c(-1,0,1), 100, replace=TRUE), 10)
g <- graph.adjacency(A, mode="upper", weighted=TRUE, diag=FALSE)
E(g)$lty <- ifelse(E(g)$weight > 0, 1, 2)
tkplot(g, layout=layout.kamada.kawai)

Gabor

On Fri, Nov 14, 2008 at 12:40 PM, Tom Backer Johnsen <backer_at_psych.uib.no> wrote:
> I have a number of (directed) graphs based on social groups, where the
> members have expresed likes and dislikes in respect to the other members.
> tkgraph makes it simple to draw the graphs in a very pleasing way, but I
> would like to differentiate between positive and negative relations in the
> graph by having the edges for the negative relations dashed and the positive
> ones continuous.
>
> Is that possible? If so how?
>
> Tom
>
> ______________________________________________
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>

-- 
Gabor Csardi <Gabor.Csardi_at_unil.ch>     UNIL DGM

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Received on Fri 14 Nov 2008 - 13:06:07 GMT

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