[BioC] Affy: reading several types of affymetrix arrays at once

[James W. MacDonald]

Hi HyunJi,

On 11/1/2010 7:56 AM, Hyun Ji wrote:
> Hi,
>
> I would like to read thousands of different Affymetrix arrays (HG-U133A,
> HT_HC-U133A_EA, and HT_HG-U133A). It doesn't seem to automatically
> detect different arrays and download relevant CDF files. Is there a way
> to do it with affy package?

I'm not sure how the thousands of different arrays comes into the 
equation (note that you cannot read different chip types into a single 
AffyBatch), but simply reading the data into an AffyBatch won't result 
in the download and install of the required CDF.

However, doing almost anything else with the AffyBatch will result in 
that happening. As an example, you can use the show() method:

abatch <- ReadAffy()
show(abatch)

Best,

Jim


>
> BW
> HyunJi
>
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-- 
James W. MacDonald, M.S.
Biostatistician
Douglas Lab
University of Michigan
Department of Human Genetics
5912 Buhl
1241 E. Catherine St.
Ann Arbor MI 48109-5618
734-615-7826
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