On 11/03/2010 02:50 AM, Hua wrote:
...
When I try to make heatmap based on this gene expression value table, I found
that, when I set 'scale' to 'column', the heatmap will be always be red. I
think this is because, there's very large values in the matrix (gene Actb),
while the most are just ve
Before plotting a heatmap we usually standardize all genes to mean
zero and variance 1. That way the green/red represent under/over
expression with respect to the mean expression, which is roughly what
the original 2-color arrays (that literally produced such heatmaps)
were measuring. Of course, st
Dear R-helper:
Suppose we have a matrix:
Genesample1 sample2
Gcnt112.52.8
Max 8.800039.1
Tmem176b 67.9000 304.7
Shmt2 8.600042.4
Rtn4 11.500057.7
Il17re7.600038.8
B
3 matches
Mail list logo
