Hi,
I am learning Bioconductor and would like to normalize affymetrix data using dCHIP and RMA. This is my code to point:

# dCHIP normalization
eset <- expresso(raw.data, normalize.method="invariantset", bg.correct=FALSE, pmcorrect.method="pmonly", summary.method="liwong") 

#Writing eset expression data to an excel file:
write.exprs(eset, file="eset_export.xls")

Is this correct?

 		 	   		  
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