R: Add additional levels to a factor

fct_expand {forcats} | R Documentation

## Add additional levels to a factor

### Description

Add additional levels to a factor

### Usage

    fct_expand(f, ...)

### Arguments

`f` | A factor (or character vector).
`...` | Additional levels to add to the factor. Levels that already exist will be silently ignored.

### Examples

    f <- factor(sample(letters[1:3], 20, replace = TRUE))
    f
    fct_expand(f, "d", "e", "f")
    fct_expand(f, letters[1:6])

[Package forcats version 0.3.0 Index]