[R] calculatingmean value for duplicates in affy array

[Uwe Ligges]

Dren Scott wrote:

> Hi ,
>  
> I was trying read in an affy array/matrix and then to calculate the mean value for all the duplicates. Is there a function in the R package that would do this?
>  
> I tried the help function and searched for 'duplicate'. Although it provides a list of functions that would eliminate the duplicate probe ids, I couldn't find one that would calculate the mean for the duplicates.
>  
> Any help would be appreciated.
>


See ?tapply
(for sure you are aware of the Bioconductor project).

Uwe Ligges


> thanks.
> 
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