Unify the levels in a list of factors

Source: R/c.R

Unify the levels in a list of factors

fct_unify(fs, levels = lvls_union(fs))

Arguments

fs

A list of factors
levels

Set of levels to apply to every factor. Default to union of all factor levels

Examples

fs <- list(factor("a"), factor("b"), factor(c("a", "b")))
fct_unify(fs)

#> [[1]]
#> [1] a
#> Levels: a b
#> 
#> [[2]]
#> [1] b
#> Levels: a b
#> 
#> [[3]]
#> [1] a b
#> Levels: a b
#>