indexProbes.CdfEnvAffy(object, which, probeSetNames = NULL)CdfEnvAffyNULL, all the probe sets are considered. list of indexes.
which let one specify which category of probes
are of interest. In the case of Affymetrix chips, probes can be "pm"
probes or "mm" probes. It the parameter is set to c("pm",
"mm"), both are returned. Should other categories be defined, they
can be handled as well.
CdfEnvAffy-class, AffyBatch-class