Dear Peter,

heatmap.2(z, dendrogram = "none", Rowv = FALSE, Colv = FALSE)

should do what you want.

Best,
Matthias

Peter Scacheri wrote:
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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