How do I find the genomic location of each probe (cell)? Specifically,
a chromosome # and start site. Is this information stored in a
AffymetrixCelSet object?
I know the cdf object contains this information, via the
AromaCellPositionFile file, but this gives me 4,359,744 probes, where
as AffymetrixCelSet gives me 4,691,556. So I was wondering how I could
map these two files.
I know about the UGP files, but I believe it gives the unit locations,
whereas I'm interested in probe location.

When reporting problems on aroma.affymetrix, make sure 1) to run the latest 
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