I am trying to display a graph using the graphviz software. When I try to use the toDotR method, edgeData are ignored. When I look at the source code for toDotR it seems like it is expecting to be able to retrieve edge attribute for the edge using edgeL(g)[[i]][j]] using edgeL(g)[[i]][ optList$edgeLabelField ]] This seems not to work. It doesn't even seem like this expression could possibly work since it ignores j. -- Michael Altmann > library(graph) > from <- c("B","D") > to <- c("C", "A") > ft <- cbind (from, to) > g <- ftM2graphNEL(ft) > edgeDataDefaults(g,"label") <- "abc" > edgeData(g,"B","C", attr="label") <- "special label" > > drawing.opts = list( edgeLabelField ="label", useDirBack=TRUE) > toDotR(g,".AS.STRING", list(), drawing.opts) [1] "digraph G {\n \"B\" ;\n \"D\" ;\n \"C\" ;\n \"A\" ;\n edge [dir=back] \"C\" -> \"B\" ;\n edge [dir=back] \"A\" -> \"D\" ;\n}\n" > sessionInfo() R version 2.7.2 (2008-08-25) i386-pc-mingw32 locale: LC_COLLATE=English_United States.1252;LC_CTYPE=English_United States.1252;LC_MONETARY=English_United States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252 attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] graph_1.18.1 loaded via a namespace (and not attached): [1] cluster_1.11.11 tools_2.7.2 [[alternative HTML version deleted]]