[BioC] Basic question about GENE 1.0 ST

[David Ruau]

Dear Guido,

I too recently analyzed my first mouse gene 1.0 ST arrays. I used the oligo package.
You have an option to compute directly the "transcript" signal in the oligo::rma function.
Vignette 05 provide an example. http://www.bioconductor.org/packages/release/bioc/html/oligo.html

David
---
David Ruau, Ph.D.
Postdoc Butte + Angst Labs
Div. Systems Medicine and Dept. of Anesthesia
Stanford University

On Jan 5, 2012, at 1:54 AM, Guido Leoni wrote:

> Dear List I've a generic question about Gene 1.0St arrays not strictly
> related to bioconductor analysis.
> I'm new to Gene 1.0 St  chips.
> Utilizing oneChannelGUi I've obtained the normalized expression (GCRMA) for
> my probesets.
> With biomart each probeset was remapped to the corresponding gene
> Now : In order to obtain the global gene expression is it  sufficient to
> compute the median of the expressions of all the probeset mapped on a gene?
> thank you very much
> Guido
> 
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