Thank you I saw this page however did not help. The program sets the range automatically to -3 :3 because of the max values and when I use this script and change values to see the problem , I still can't set the value between -5:5. But I will write to this website too, thank you for your reply.
How to set value range of heatmap plotted with R?
Hello,
I have fold expression change data for three species and I want to plot a heatmap in R ggplot2 package. To compare them I want to set the range fixed for all, for example -5 to 5. Here is my script to plot
heatmap.2( pos_matrix, col = greenred(70),cexRow = 1, cexCol = 1)
If you make a suggestion I will be appreciated.
1 answer
Check the "breaks" parameter.
Here is a detailed explanation: http://stackoverflow.com/questions/17820143/how-to-change-heatmap-2-color-range-in-r
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I'd recommend checking stackoverflow.