check_nlevels: Check nlevels

In checkr: Check the Properties of Common R Objects

Description

Checks the number of levels of an object.

Usage

check_nlevels(x, nlevels = TRUE, x_name = substitute(x),
  error = TRUE)

Arguments

x	The data to check.
nlevels	A flag indicating whether x should have elements (versus no elements) or a missing value indicating no requirements or a count or count range of the number of elements.
x_name	A string of the name of the object.
error	A flag indicating whether to throw an informative error or immediately generate an informative message if the check fails.

Value

An invisible copy of x (if it doesn't throw an error).

See Also

check_levels and check_vector

Examples

check_nlevels(factor(1), error = FALSE)
check_nlevels(factor(1), nlevels = 2, error = FALSE)

checkr documentation built on May 1, 2019, 6:59 p.m.