n_distinct

0th

Percentile

Efficiently count the number of unique values in a set of vector

This is a faster and more concise equivalent of length(unique(x))

Usage
n_distinct(..., na.rm = FALSE)
Arguments
na.rm

id TRUE missing values don't count

vectors of values

Aliases
  • n_distinct
Examples
library(dplyr) x <- sample(1:10, 1e5, rep = TRUE) length(unique(x)) n_distinct(x)
Documentation reproduced from package dplyr, version 0.5.0, License: MIT + file LICENSE

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