[BioC] expression sets with probe names

[Karin Lagesen]

I am new to bioconductor, so please excuse me if my questions are a
faq somewhere...:)

I am working on a set of affymetrix chips that I want to do vsn on.
Now, I have external ways of examining the results from this, but this
is dependent on me being able to map the results from vsn. I am
working on the probe level, so in other cases, where the results have
been an affybatc, my solution to accessing the data has been to use
the command probes(abatch) to get a probe by probe listing of all the
intensities.

Now, the results from vsn is an exprset, and I cannot find any such
information associated with these objects. I am able to utilise not
only the probe name, but also the x and y positions on the chips too,
but I cannot find a way to associate intensities in the exprset object
to such information.

Could any of you give me any pointers to what I can do to work around
this problem?

Thanks!

Karin
-- 
Karin Lagesen, PhD student
karin.lagesen at medisin.uio.no
http://folk.uio.no/karinlag