This generic function returns the geometry for a chip/platform.
Usage
getGeometry(object)
Arguments
object
See showMethods("getGeometry"), but generally
object will be a subclass of PkgSeed.
Value
A list with two elements nrows and ncols
Details
The idea is that the input files can be used to determine the
geometry for each platform. For example, the method for
AffySNPPDInfoPkgSeed objects reads the header of the CDF file
to extract the geometry.