count_distinct: Count Distinct Values

In KO112/KO: Kevin O'Brien's Personal Package

Description

Count the number of distinct values in a data frame/matrix/vector. If a data frame or matrix is passed, counts the number of distinct values by column. If a vector is passed, just counts the number of distinct values.

Usage

count_distinct(data, use_base = TRUE)

Arguments

data	A data frame/matrix/vector.
use_base	Whether to use base R functions (i.e. length/distinct) or dplyr::n_distinct, which seems to have some performance bugs.

Value

Integer vector, named for data frames or matrixes with column names.

Examples

count_distinct(mtcars)
count_distinct(as.matrix(mtcars))
count_distinct(mtcars$mpg)

KO112/KO documentation built on Oct. 2, 2020, 9:21 a.m.