(from a newbie...)
 
1. When I 
> ReadAffy(widget=T) for over about 20 HGU133aplus2 chips, I get the
following message:
Error: cannot allocate vector of size 232872 Kb
In addition: Warning messages:
1: Reached total allocation of 1500Mb: see help(memory.size) 
2: Reached total allocation of 1500Mb: see help(memory.size)
 
I'm running Windows XP, 2Gb Ram, 3Ghz. Surely, I should be able to
analyze more than 20 chips at a time with this system (?) I've already
upped my memory.limit...
Is there a cheaper way to create an Affy batch?
 
2. When I want to update to the next version of R, how do I avoid having
to re-install all of the Bioconductor packages I already have installed
on my current version? At the moment, when I re-install, I can't load
any of the prior packages...
 
thanks
 
Tarun
Genome Sciences Centre, BC

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