Returns the id numbers of the half-founders. Half-founders are defined as the individuals with only one known parent in the genealogy (i.e., either mother id=0 or father id=0).
Usage
gen.half.founder( gen, ...)
Arguments
gen
An object of class GLgen obtained with gen.genealogy, gen.lineages or gen.branching. Required.
...
Option to pass additionnal arguments automaticaly between methods. Internal use only.