[BioC] urgent..

James W. MacDonald jmacdon at med.umich.edu
Mon Apr 17 14:58:07 CEST 2006

Actually, if the data are .csv files then they most likely have already 
been processed using either MAS5 or GCOS. In that case you won't be able 
to do RMA or GCRMA. For that you need the .CEL files.

However, as Naomi noted the first few sections of the affy vignette 
should help get you going if/when you get the celfiles.



Naomi Altman wrote:
> You are in luck.  All you need to do is read the first few sections 
> of the affy manual, and you will see that this is easily done in 4 or 
> 5 lines of code.
> --Naomi Altman
> At 03:50 PM 4/16/2006, kst wrote:
>>   I need to do summarizations of the probe intensity values for 
>>each probeset of Affymetrix data in excel(.csv) format, by RMA, 
>>GCRMA and MAS5. Can you please suggest me how to do it in R? or is 
>>there any code available?
>>  Thank-you for your help.
>>  kavita
>>        [[alternative HTML version deleted]]
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James W. MacDonald, M.S.
Affymetrix and cDNA Microarray Core
University of Michigan Cancer Center
1500 E. Medical Center Drive
7410 CCGC
Ann Arbor MI 48109

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