j.joshua thomas <researchjj <at> gmail.com> writes: > > Dear List > > RGui Version : 2.3.0 > User : 1 month > > I am having the *dendrogram plotting problem * > > The code i tried: > > >library(cluster) > DD<-DataSetS01022 # 575 x 2 matrix > > VC<-hclust(dist(DD),"ave") > *Warning message: > NAs introduced by coercion* ( what does it mean? Is that the problem?) > > plot(VC,hang=-2) > > Output: http://roughjade.blogspot.com
I think the problem is ploting too many branches (575) in the same dendrogram. You may consider reading help(dendrogram) to find alternative ways of visualizing such huge amount of data. I would try something like VCd<-as.dendrogram(VC) plot(VCd, nodePar=list(pch = c(NA,NA), cex=0.8, lab.cex = 0.01)) and use a magnifying glass to se the labels ;) or better VCd2 <- cut(VCd, h=5) plot(VCd2$upper) #to visualize the general structure of the dendrogram and then plot(VCd 2$lower[[1]]) plot(VCd 2$lower[[2]]) plot(VCd 2$lower[[3]]) ... etc, to visualize every branch. Marcelino de la Cruz Departamento de Biologia Vegetal Universidad Politecnica de Madrid ______________________________________________ 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