Mega2GenABEL: generate gwaa.data-class object from a Mega2R database
Description
Call the Mega2R functions to: create a .tped file, a .tfam file and a .phe file.
Then call the GenABEL functions to process these files: the .tped and the .tfam
file are processed by convert.snp.tped to produce a tped.raw file. The latter
is combined with a .phe (phenotype) file by load.gwaa.data to create a gwaa.data-class
object in memory. All these files are deleted when the exits.