[BioC] CDF/CEL files

[Ann Hess]

I am trying to use the information in CDF files from the BioConductor
website (www.bioconductor.org/data/cdfenvs/cdfenvs.html).

Although there are 287296 (536x536) probes on an hu6800 chip, I only get
281966 probes (from 7129 "genes") in the hu6800cdf data.  I counted the
probes for each "gene" and added to get a total of 281966.

Am I missing duplicates?  What am I doing wrong?  My objective is to merge
the CEL and CDF files so that I can perform my own analysis.