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For those of you who use igraph is there a way to highlight (color) particular notes. For example if I want to color the "Peter" node red and everything else blue or leave default) how would I do that or can I do that. Seems as though I might create an attribute column - maybe?? Jeff library(igraph) # define links in data edges <- rbind(c("Dave", "Jenny"), c("Peter", "Jenny"), c("John", "Jenny"), c("Dave", "Peter"), c("Dave", "John"), c("Peter", "Sam"), c("Sam", "Albert"), c("Peter", "John")) # generate and plot graph # set argument directed = FALSE in graph.edgelist() to plot an undirected graph. g <- graph.edgelist(edges, directed = FALSE) plot(g, vertex.size = 1, vertex.label.dist = 0.5) [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.