get all descendants of an individual
Usage
GetDescendants(id, Pedigree)
Arguments
- id
id of the individual
- Pedigree
dataframe with columns id - parent1 - parent2; only the
first 3 columns will be used.
Value
a list with as first element id, second offspring, third
grand-offspring, etc.. Each element is a vector with ids, the first three
elements are named, the rest numbered.