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

vectors of values

na.rm

if TRUE missing values don't count

Aliases
  • n_distinct
Examples
# NOT RUN {
x <- sample(1:10, 1e5, rep = TRUE)
length(unique(x))
n_distinct(x)
# }
Documentation reproduced from package dplyr, version 0.7.3, License: MIT + file LICENSE

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