nunique {plyr} | R Documentation |
Number of unique values.
Description
Calculate number of unique values of a variable as efficiently as possible.
Usage
nunique(x)
Arguments
x |
vector |
[Package plyr version 1.8.9 Index]
nunique {plyr} | R Documentation |
Calculate number of unique values of a variable as efficiently as possible.
nunique(x)
x |
vector |