[BioC] scipt help

[James W. MacDonald]

Hi Marco,

marco fabbri wrote:
> As a  results of limma analysis I got a list of affy probesets.
> After annotation some probets point to the same gene symbol.
> I would like to produce an R script that remove duplicate, and for duplicate
> keep only the probests with the larger A.
> 
> To be clearer I have a table as the one below and I would like to remove the
> probe 2000_at because the symbol ccl5 is present twice and for the duplicate
> I remove 2000_at because A (1.5) is smaller than the  2003_at A 5.25.
> 
> Symbol  Probe chip1 chp2 A
> ccl5     2000_at 1.2 1.3 1.25
> ccl2    2001_at 1.2 1.3 1.25
> ccl5    2003_at 5.2 5.3 5.25

See ?findLargest in the Category package.

Best,

Jim



-- 
James W. MacDonald, M.S.
Biostatistician
Affymetrix and cDNA Microarray Core
University of Michigan Cancer Center
1500 E. Medical Center Drive
7410 CCGC
Ann Arbor MI 48109
734-647-5623


**********************************************************
Electronic Mail is not secure, may not be read every day, and should not be used for urgent or sensitive issues.