nlevels

0th

Percentile

The Number of Levels of a Factor

Return the number of levels which its argument has.

Keywords
category
Usage
nlevels(x)
Arguments
x
an object, usually a factor.
Details

This is usually applied to a factor, but other objects can have levels.

The actual factor levels (if they exist) can be obtained with the levels function.

Value

The length of levels(x), which is zero if x has no levels.

See Also

levels, factor.

Aliases
  • nlevels
Examples
library(base) nlevels(gl(3, 7)) # = 3
Documentation reproduced from package base, version 3.3, License: Part of R @VERSION@

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