| nIndividual {GeneticsPed} | R Documentation |
nIndividual returns number of individuals (subjects and/or
ascendants) in a pedigree object.
nIndividual(x, col=NULL, extend=TRUE, drop=TRUE)
x |
pedigree |
col |
character, which id column should be the source: "subject" (default) or particular ascendant i.e. "father" and "mother" |
extend |
logical, extend pedigree |
drop |
logical, drop unused levels in case factors are used |
FIXME - this will change a lot!!!!
There is always one additional level in levels in case factors are
used to represent subjects in a pedigree as described in
Pedigree. However, nlevels.Pedigree prints out
the number of levels actually used to represent subjects i.e. level
unknown is not included into the result.
Gregor Gorjanc
summary.Pedigree, extend
# Deafult example ped <- generatePedigree(5) nIndividual(ped) # Other id columns nIndividual(ped, col="father") nIndividual(ped, col="mother") # Remove subjects with unknown fathers - FIXME # ped <- ped[!is.na(ped, col="father"), ] # nIndividual(ped) # nIndividual(ped, extend=FALSE)