getParent: Returns the parents of a particular variety (if they exist)
Description
This function returns up to two values that indicate the parents of the inputted variety.
Usage
getParent(v1, geneal)
Arguments
v1
the label of the vertex of interest (in character string format)
geneal
the full genealogy (in data frame format)
References
Rutter L, VanderPlas S, Cook D, Graham MA (2019).
ggenealogy: An R Package for Visualizing Genealogical Data.
Journal of Statistical Software,
89(13), 1--31.
tools:::Rd_expr_doi("10.18637/jss.v089.i13")