search for: wrlink

...easing > with date of birth (therefore sire and dam always have > lower identifiers than their offspring) and with missing > values coded as 0. > > How would I go about doing this? > You might look at http://www.qimr.edu.au/davidD/sib-pair.R, specifically the read.pedigree() and wrlink() functions. The former is not very impressive speedwise -- I usually perform these tasks in the my Sib-pair (Fortran) program, which is on the same webpage. It will order the pedigree by generational position, so a DOB is not required to do the sort. Terry Therneau's kinship package does th...