I am trying to follow the mclust examples in "MCLUST: Software for Model Based Clustering, Density Estimation and Disriminant Analysis" by Chris Fraley and Adrian Raftery, but I cannot reproduce the density and uncertainty surfaces for the Lansing Woods maples. I am using R 1.8.1 with the code below. The same code works fine in S-Plus 6.2 Am I missing something or is this a bug? Thanks Mike White library(mclust) data(lansing) # R only maples<-lansing[as.character(lansing[,"species"]) == "maple", -3] maplesBIC <- EMclust(maples) maplesModel <- summary(maplesBIC, maples) plotMaples2 <- function(type, what, transformation) { out <- do.call("surfacePlot", c(maplesModel, list(data=maples, type=type, what=what,transformation=transformation))) invisible() } par(pty="s", mfrow=c(1,2)) plotMaples2(type="contour", what="density", transformation="log") par(pty="s") plotMaples2(type="contour", what="uncertainty", transformation = "log")