[BioC] reading .gpr w/limma - error (bug??)

[Mayte Suarez-Farinas]

I just would like to report an error while reading .gpr with limma

If I use:
files<-dir(pattern="*\\.gpr")
RG<-read.maimages(files,source='genepix')
Read BG01.gpr
Read BG02.gpr
Read GE01.gpr
Error in "[.data.frame"(obj, , columns$Rf) :
        undefined columns selected

but if I read separatly::
	RG.13<-read.maimages(files[1:3],source='genepix',wt.fun=wtflags(0.1))
	RG.56<-read.maimages(files[5:6],source='genepix',wt.fun=wtflags(0.1))
	RG.4<-read.maimages(files[4],source='genepix',wt.fun=wtflags(0))
	RG<-cbind(RG.13,RG.4,RG.56)

then it works.

I also succeed reading the whole batch of files together  with function 
from  marray package.

-- 
Mayte Suarez Farinas
The Rockefeller University
1230 York Avenue, Box 212
New York, NY 10021
phone: 1-212-327-8186
fax:   1-212-327-7422