levels {base} | R Documentation |
Level Names for a Factor
Description
levels
provides access to the levels attribute of factor.
The first form prints the levels of the observations
and the second sets the levels.
In this case,
value
must be a vector of character strings with
length equal to the number of levels of x
.
To find out how many levels a factor has user the function
nlevels
.
Usage
levels(x)
levels(x) <- value
See Also
factor
, nlevels
.