[BioC] gcRMA and normalization
claudio.is at libero.it
Tue Aug 30 10:21:37 CEST 2005
I want to use gcrma function, to get expression from a genechip experiment, but I don't want to use any normalization methods.
I tried to use expresso this way,
> n<-expresso(r, bgcorrect.method="gcrma", normalize.method= FALSE, pmcorrect.method="pmonly", summary.method="medianpolish")
background correction: gcrma
PM/MM correction : pmonly
expression values: medianpolish
background correcting...Error in bg.correct(afbatch, method = bgcorrect.method) :
Unknown method (cannot find function bg.correct.gcrma )
but as you can see it didn't works...
do ou have any other suggestion?
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