isPm.AffymetrixCdfFile: Checks which cells (probes) are PMs and not
Description
Checks which cells (probes) are PMs and not.Usage
## S3 method for class 'AffymetrixCdfFile':
isPm(this, units=NULL, force=FALSE, cache=TRUE, ..., verbose=FALSE)
Arguments
units
The units to be read. If NULL, all units are read. force
If TRUE, cached results are ignored. cache
If TRUE, results are cached. Value
- Returns a
logical vector of length K, where K equals the total number
of cells in the requested units. Note that the cells are ordered as
they occur in the units, that is, not in incremental order.
Caching
This method caches a logical vector of length N, when N equals the
number of cells on the array. The size of this vector is approximately
4*N bytes. The vector indicates if a cell is a PM or not.