[R] Heatmap.2 - eliminate cluster and dendrogram

From: Peter Scacheri <peter.scacheri_at_case.edu>
Date: Wed, 14 May 2008 12:40:01 -0400


Using the heatmap.2 function, I am trying to generate a heatmap of a 2 column x 500 row matrix of numeric values. I would like the 1st column of the matrix sorted from the highest to the lowest values - so that the colors reflected in the first column of the heatmap (top to bottom) go from red to green.

After sorting the matrix (z), I tried the following command, but the data remains clustered.

heatmap.2((z),col=greenred(100),dendrogram=NULL,Rowv=FALSE)

I also tried the following, but the data remained clustered.

heatmap.2((z),col=greenred(100),Colv=1:ncol(z))

ANY IDEAS??
Thanks so much,
Peter



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