Thanks Paul, I will try that package.

best,
Xiaowei

On Tue, Dec 21, 2010 at 7:21 AM, Paul Geeleher <paulgeeleher@gmail.com>wrote:

> If you're using affy arrays the different affy IDs correspond to
> different splice variants. If you want to reorganise probes so that
> there is one gene to one probe google "Brainarray" and that should
> answer your question.
>
> Paul
>
> On Fri, Dec 17, 2010 at 10:21 PM, Xiaowei Guan <xxg39@case.edu> wrote:
> > Dear Biodonductor group,
> >
> > I have a question relevant to gene expression dataset. Usually, we will
> have
> > probes, while a probe set will corresponding to one gene. What should we
> do
> > about this?
> >
> > Do we use probes as our targets or derive only one value from the probe
> set
> > corresponding to one gene?
> >
> > Do you know which R package will do this job? Thanks very much for your
> > help.
> >
> > Have a wonderful weekend!
> >
> > best,
> > Xiaowei
> >
> >        [[alternative HTML version deleted]]
> >
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> >
>
>
>
> --
> Paul Geeleher
> School of Mathematics, Statistics and Applied Mathematics
> National University of Ireland
> Galway
> Ireland
> --
> www.bioinformaticstutorials.com
>

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