I wonder if anyone could tell me how I can plot a Minimum Spanning Tree using the functions provided in the "graph" and "RBGL" packages? I am able to build the MST using the following set of commands:> library(graph)> library(RBGL)> x <- read.table("h:/pole.tab",header=T,row.names=1)> y <- dist(x)> g1 <- new("distGraph",y)> g2 <- mstree.kruskal(g1)However, there doesn't seem to be a function that allows the command "plot(g2)" to draw it. Many thanks, Andrew Wilson