Hi,
  I need to generate a heatmap on a square matrix and wouldn't want to reorder the columns and the rows on the heatmap display.  
  I have used the options Rowv=NULL and Colv=NULL but doesn't seem to work. Following is a snippet of the heatmap function i am using.

args <- commandArgs();
inputfile <- args[2]
imgfile   <- args[3]

bitmap(imgfile, height=15, width=15, res=100, pointsize=9)

library(gplots)
library(RColorBrewer)
data <- read.table(inputfile)
matrix <- as.matrix(data)
cp <- colorRampPalette(c("red","yellow","darkgreen"),space="Lab", bias=1.5)
heatmap.2(matrix, Colv=1:ncol(matrix), dendogram="row", hclustfun=function(m) hclust(m,method="complete"),col=cp(25),scale="none",trace="none",keysize=1,margins=c(5,12), cexCol=1, cexRow=1)
q()
dev.off()

The alternative that i tried to avoid the reordering was 

heatmap.2(matrix, Rowv=NULL, Colv=NULL, col=cp(25), scale="none", trace="none", keysize=1, margins=c(5,12), cexCol=1, cexRow=1)

But the above command doesnt generate the heatmap. So could anyone let me know what are the options to avoid reordering the rows and columns of the heatmap and i dont want the dendogram. I am using the R version 2.8.0 (2008-10-20)".

Thanks,
Tanuja




      
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