minimum finds the minimum of two factors, i.e. the finest factors that is coarser than both of the factors.
Usage
minimum(x, y, concatenate.names = TRUE)
Value
A factor with the minimum.
Arguments
x
vector that will be interpreted as a factor.
y
vector that will be interpreted as a factor.
concatenate.names
boolean. If TRUE then the levels of the minimum are constructed as the concatenation of the levels for x and y. If FALSE then the levels of the minimum are given as numbers. Defaults to TRUE.