Change NAs in a factor into a category

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Description

Extract all the missing values in a factor variable and turn them into a separate category.

Usage

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NAtoCategory(fact, label = "missing")

Arguments

fact

Factor variable.

label

Label to be given to the missing valus.

Value

Updated factor variable.

Author(s)

Kaspar Rufibach (maintainer), kaspar.rufibach@gmail.com,
http://www.kasparrufibach.ch

Examples

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set.seed(1977)
fact <- factor(sample(c(round(runif(10, 1, 3)), rep(NA, 10))), levels = 1:3, 
    labels = c("no", "maybe", "yes"))
NAtoCategory(fact)

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