[BioC] RMA question

[Rafael A. Irizarry]

yes. and notice that rownames(data3) should give you the same thing as 
geneNames(data2)

if you are interested in exporting use the method exprs2excel 
On Wed, 27 Aug 2003 Phguardiol at aol.com wrote:

> Hi,
> a simple question I guess:
> I have 8 CEL files from U133A
> I run:
> library(affy)
> data<-ReadAffy()
> data2<-rma(data)
> data3<-exprs(data2)
> 
> then:
> colnames(data3)
> and it start with the name of the first sample not with the probesetID
> 
> If I run:
> dim(data3) 
> I get:
> [1] 22283  8 
> 
> Can I add this probeset column by doing this :
> 
> tab <- data.frame(Name=geneNames(data2), data3)
> 
> in this case dim(tab) gives me [1] 22283 9 which I like more...but am I right ?
> will it be the same with gcrma ?
> thanks
> Philippe
> 
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