n_distinct: Count the number of unique values in a vector

In tidytable: Tidy Interface to 'data.table'

Count the number of unique values in a vector

Description

This is a faster version of length(unique(x)) that calls data.table::uniqueN().

Usage

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

Arguments

...	vectors of values
na.rm	If TRUE missing values don't count

Examples

x <- sample(1:10, 1e5, rep = TRUE)
n_distinct(x)

tidytable documentation built on Oct. 5, 2023, 5:07 p.m.