| nlevels {base} | R Documentation |
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. |
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
Examples
nlevels(gl(3, 7)) # = 3
[Package base version 4.4.1 Index]