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 <[EMAIL PROTECTED]> 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 > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Gabor Csardi <[EMAIL PROTECTED]> UNIL DGM ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.