[R] Rgraphviz - neato layout - edge weights do not have an effect
Dear all, neato makes layouts according to a physical model in which the length of the edges is determined by springs. The weight of the edge is the strength of the spring. However, I was not able to find any influence of edge weight on the layout. In the http://www.graphviz.org/Documentation/neatoguide.pdf the attribute len is another parameter of the neato layout. set.seed(31) V=letters[1:5] g2=randomEGraph(V,0.5) plot(g2,neato,main=All weights 1) # change and edge weight edgeData(g2, from = d, to = e, attr = weight) - 20 plot(g2,neato,main=Nothing changed!) #try out length attribute change edgeDataDefaults(g2,len)=1 edgeData(g2, from = d, to = e, attr = len) - 5 plot(g2,neato,main=Nothing changed again!) Has anyone an idea how to achieve a change in the graph layout ? Best Franz Quehenberger -- -- Franz Quehenberger Institute for Medical Informatics, Statistics and Documentation Graz, Austria __ R-help@stat.math.ethz.ch 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.
Re: [R] Rgraphviz - neato layout - edge weights do not have an effect
Hi Franz, This might be better directed to the bioconductor mail list. Franz Quehenberger [EMAIL PROTECTED] writes: Dear all, neato makes layouts according to a physical model in which the length of the edges is determined by springs. The weight of the edge is the strength of the spring. However, I was not able to find any influence of edge weight on the layout. In the http://www.graphviz.org/Documentation/neatoguide.pdf the attribute len is another parameter of the neato layout. set.seed(31) V=letters[1:5] g2=randomEGraph(V,0.5) plot(g2,neato,main=All weights 1) # change and edge weight edgeData(g2, from = d, to = e, attr = weight) - 20 plot(g2,neato,main=Nothing changed!) #try out length attribute change edgeDataDefaults(g2,len)=1 edgeData(g2, from = d, to = e, attr = len) - 5 plot(g2,neato,main=Nothing changed again!) Has anyone an idea how to achieve a change in the graph layout ? Have you read through the Rgraphviz vignettes? Rgraphviz currently ignores attributes of the graph. This is currently by design: display attributes are Rgraphviz's business. There are ways to specify node and edge attributes for Rgraphviz, but I'm not sure if the feature you want is implemented. + seth __ R-help@stat.math.ethz.ch 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.
