Hi! I have a problem generating a heatmap from a hierarchical clustering, and I haven't found a solution in the documentation: hv<-heatmap(x, keep.dendro=TRUE) heatmap(x, Rowv=hv$Rowv, Colv=reorder(hv$Colv,1:16, + agglo.FUN= mean), col = greenred.colors(256), margin = c(7,7), + ColSideColors=gr) This gives me the heatmap that I want, but in cases where there are many genes, the row dendrogram and the gene names become ugly and illegible. My question is: how can I generate a heatmap with rows ordered according to the dendrogram, but with row dendrogram and gene names omitted? Im am using R version 2.2.0, 2005-10-06, powerpc-apple-darwin7.9.0 Thanks a lot! Georg

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