Hi boyang zhe,
The dendrogram is stored in the object returned from heatmap.2
#e.g.
x <- heatmap.2(matrix(1:9,3))
dend.row <- x$rowDendrogram
class(dend.row)
[1] "dendrogram"
plot(tmp$rowDendrogram)
Amos Folarin
---------- Forwarded message ----------
From: boyang zhe <zheboy...@gmail.com>
To: r-help@r-project.org
Date: Mon, 11 Apr 2011 11:15:52 +0200
Subject: [R] heatmap clustering dendrogram export
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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