qc.read.file: Read a file defining the QC parameters for a specified array and
set up the QC Environment
Description
Affymetrix define a series of QC parameters for their arrays. Many of
these rely on specific probeset that differ between arrays and are
used to calculate things like 3'/5' ratios. See qc.affy
for more details. This is usually done by a call to
setQCEnvironment; the function described here is the one
that does the actual loading of the
configuration file. See the package vignette for details of the config
file's syntax.