Hi,
I am analysing gene expression data using the heatmap.2 function in R and I
was wondering what is the formula of the "raw z-score" bar which shows the
colors for each pixel.
According to that post:
https://mailman.stat.ethz.ch/pipermail/r-help/2006-September/113598.html, it
is the
(actual value - mean of the group) / standard deviation.
But, mean of which group? Mean of the gene vector? And actual value of that
gene on a sample? I would be grateful if you could give me some more
details about it or even if there is a book/manual that I could address
to..
Thanks a lot,
Chrysanthi.
*
*
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
