prunePed: Pedigree pruning
Description
Creates a subset of a pedigree by retaining the ancestors of a specified subset
of individuals
Usage
prunePed(pedigree, keep, make.base=FALSE)
Arguments
pedigree
pedigree with id in column 1 dam in column 2 and sire in
column 3
keep
individuals in pedigree for which the ancestors should be
retained
make.base
logical: should ancestors that do not provide additional information be discarded?