[BioC] omit row dendrogram in heatmap

[Georg Otto]

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