base (version 3.5.3)

nlevels: The Number of Levels of a Factor

Description

Return the number of levels which its argument has.

Usage

nlevels(x)

Arguments

x

an object, usually a factor.

Value

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

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.

See Also

levels, factor.

Examples

Run this code
# NOT RUN {
nlevels(gl(3, 7)) # = 3
# }

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