Extract all the missing values in a factor variable and turn them into a separate category.
NAtoCategory(fact, label = "missing")
Label to be given to the missing valus.
Updated factor variable.
Kaspar Rufibach (maintainer), firstname.lastname@example.org, http://www.kasparrufibach.ch
fact <- factor(sample(c(round(runif(10, 1, 3)), rep(NA, 10))), levels = 1:3,
labels = c("no", "maybe", "yes"))
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