combine_levels: Combine factor levels

In tern: Create Common TLGs Used in Clinical Trials

Combine factor levels

Description

Combine specified old factor Levels in a single new level.

Usage

combine_levels(x, levels, new_level = paste(levels, collapse = "/"))

Arguments

x	(factor) factor variable.
levels	(character) level names to be combined.
new_level	(string) name of new level.

Value

A factor with the new levels.

Examples

x <- factor(letters[1:5], levels = letters[5:1])
combine_levels(x, levels = c("a", "b"))

combine_levels(x, c("e", "b"))

tern documentation built on Sept. 24, 2024, 9:06 a.m.