[BioC] How to obtain summarized data without normalization

[Li, Aiguo (NIH/NCI) [E]]

Hi all,

I want to get a probeset level data set without mas5 normalization and used the following script.  Could someone tell me this is right or not?

affydata <- ReadAffy()
ExprNonorm<-mas5(affydata,normalize=F)

Does these script do the background correction? Or only summarize the probeset level data?

Thanks,

AG