Dear all,

At the risk of looking like an idiot:
is rma background correction supposed to make log-intensity histograms bimodal?
I noticed this in my own data, then checked it using the Dilution set too 
(see below).
This seems weird to me........am I doing something wrong?

data(Dilution)
dil.rma<- bg.correct(Dilution, method="rma")
hist(Dilution[,1:2])
hist(dil.rma[,1:2])


Thanks!
Siobhan

S. A. Braybrook
Graduate Student, Harada Lab
Section of Plant Biology
University of California,  Davis
Davis, CA 95616
Ph 530.752.6980

The time is always right, to do what is right.
- Martin Luther King, Jr.  
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