[BioC] LIMMA ignoring background

[Guoneng Zhong]

Hi,

I have two-channel image result files that don't have background information,
just median and mean intensity readings.  But read.maimages requires that I
provide Rb, Rf, Gb, Gf values, and I don't have the Rb and Gb values.  How do I
make the analysis ignore those columns?  I am doing a simple lmFit and topTable.

THanks!
G

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