Hi all,

I am doing a hierarchical clustering for 12,000 genes across 3 samples. The
gene expression is stored in a matrix called 'Gexpr' which is a 12000 by 3
matrix.

I plot the cluster using

heatmap.2(Gexpr, Rowv=TRUE,
Colv=FALSE,dendrogram="row",col=greenred(75),trace="none",dendrogram
="column")

I was finding a way to access the probe id's for one of the clusters. Could
anybody please give me some suggestions?

Thank you very much,
Wendy

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