[BioC] combining HGU133a2 and U133plus2 chips

[David Ruau]

Hi Anne,

You need to normalize your data separately. Please refer to this  
really recent thread:
https://stat.ethz.ch/pipermail/bioconductor/2008-April/022062.html

Regarding you memory problem have a look at justGCRMA or justRMA and  
the various option for memory optimization they provide. running  
justGCRMA on your data should run just fine and eat less than 2Gb RAM.

David

On Apr 25, 2008, at 1:58 PM, Anne wrote:

> Hi,
>
> I need to combine a set of HGU133a2 (68) and HGU133plus2 (57) chips.  
> Found
> the package matchprobes to be usefull for this purpose.... but since  
> I have
> to load my data by the read.affybatch function it takes up to much  
> memory
> just to do this part.
>
> Any smart short cut to avoid this memory problem?
>
> best regards
> Anne
>
> 	[[alternative HTML version deleted]]
>
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