Small helper function to collapse factors using a Base R syntax
Usage
collapse_fct_levels(
x = appdata$ECG$status,
new_levels = list(old = "old", new = c("new", "updated")),
warn_non_existent_levels = FALSE
)
Arguments
- x
a character string or factor
- new_levels
a named list of levels that need to be relabeled. They
should be character values. If no names are provided, the first element
will be chosen as the factor label.
- warn_non_existent_levels
A logical, whether a warning should be given
if levels are not existent.
Value
a factor with newly calculated levels
Examples
collapse_fct_levels(
x = LETTERS,
new_levels = list("A-C" = c("A", "B", "C"))
)
#> [1] A-C A-C A-C D E F G H I J K L M N O P Q R S
#> [20] T U V W X Y Z
#> Levels: A-C D E F G H I J K L M N O P Q R S T U V W X Y Z
