[R] [BioC] two questions associated with heatmap

[Sean Davis]

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