[R] [BioC] two questions associated with heatmap

[Weiwei Shi]

oh, i mean how it defines the group? i just want to confirm if it is
based on the whole matrix?

On 9/23/06, Sean Davis <sdavis2 at mail.nih.gov> wrote:
> Sean Davis wrote:
> > Weiwei Shi wrote:
> >
> >> hi, there:
> >> i have 2 questions associated with heatmap
> >>
> >> in heatmap.2{gplot}, there is a bar called "raw z-score" showing the
> >> coloring legend for each pixel. Where can I find that z-score's
> >> formulae?
> >>
> >>
> > A Z-score is the mean of the group divided by the standard deviation.
> >
> It's a bit late--what I meant to say is that the z-score is the ("actual
> value" minus the mean of the group) divided by the standard deviation.
>
> Sean
>


-- 
Weiwei Shi, Ph.D
Research Scientist
GeneGO, Inc.

"Did you always know?"
"No, I did not. But I believed..."
---Matrix III