[aroma.affymetrix] Error: cannot allocate vector of size 692.8 Mb

Hi, all: I am using FIRMA model for my Mouse Exon array analysis. I am testing the FULL annotation. After I used FirmaModel and fit it, I used the following code to extract Firma Scores: exFirma<-extractDataFrame(firmaScore,addNames=TRUE); however, I got the following error: Error: cannot alloc

[aroma.affymetrix] use a few normal samples as the reference set

Hi Henrik, "For each location, the raw CN is calculated as the chip effect relative to the chip effect of a normal reference sample. If no reference sample is available, a robust average across all samples can be used instead." Current documentation shows how to use the whole datase