Re: [R] heatmap for plotting categorical matrix

not sure about gplots, but the one in base R should work well if you specify the scaling method to be 'none': heatmap(a4[1:40, ], Rowv=NA, Colv=NA, col=c("grey", "blue", "purple", "red"), scale='none') Regards, Yihui -- Yihui Xie Phone: 515-294-2465 Web: http://yihui.name Department of Statisti

[R] heatmap for plotting categorical matrix

Hi there, I have a matrix like this: > a4[1:20, 1:5] 194 211 294 314 315 GO:003 1 1 1 1 1 GO:072 0 0 0 0 0 GO:076 1 0 0 0 0 GO:082 1 3 1 1 1 GO:083 1 0 0 0 1 GO:086 0 1 0 1 1 GO:114 0 0 0 0