[R] Heatmap.2 - eliminate cluster and dendrogram

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

Re: [R] Heatmap.2 - eliminate cluster and dendrogram

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

Re: [R] Heatmap.2 - eliminate cluster and dendrogram

Thanks Matthias, I tried that, but received the following error message: Error in image.default(1:nc, 1:nr, x, xlim = 0.5 + c(0, nc), ylim = 0.5 + : dimensions of z are not length(x)(+1) times length(y)(+1) -Peter At 10:18 AM +0200 5/15/08, Matthias Kohl wrote: Dear Peter, heatmap.

Re: [R] Heatmap.2 - eliminate cluster and dendrogram

heatmap.2(z, col = greenred(100), dendrogram = "none", Rowv = FALSE) NULL isn't one of the accepted values for the dendrogram argument. See ?heatmap.2 Best, Jim 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

Re: [R] Heatmap.2 - eliminate cluster and dendrogram

Dear Peter, the call works for me; e.g. x <- matrix(rnorm(100), ncol = 4) heatmap.2(x, dendrogram="none", Colv = FALSE, Rowv = FALSE) There seems to be something wrong with your matrix z ... Best, Matthias Peter Scacheri wrote: Thanks Matthias, I tried that, but received the following error