Hi,

I am a beginner for R.

I had use gplots to generate a heatmap as following:

>heatmap.2(matrix, col=topo.colors(75), dendrogram="column", Rowv=FALSE,
trace="none", key=TRUE, keysize=0.8, density.info="none", cexRow=0.2,
cexCol=0.6)

It work well. It generate heatmap whith rcolumn clustering dendrogram and I
can export a very nice graph. But I don not know how to export the column
clustering dendrogram out. Because I want to get the dendrogram for next
step analysis. If I can export it as the newick format (or nexus format), it
will be much easy for me.

Thank you very much!

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