funique: A faster unique function

In funique: A Faster Unique Function

Description

Similar to unique, only optimized for working with date-time columns.

Usage

funique(x)

Arguments

x	Input data. If x is not a data frame or date-time object, then it is simply passed to unique

Value

The unique rows/values of x.

Examples

## create example data set
d <- data.frame(
  x = rnorm(1000),
  y = seq.POSIXt(as.POSIXct("2018-01-01"),
    as.POSIXct("2018-12-31"), length.out = 10)
)

## sample to create version with duplicates
dd <- d[c(1:1000, sample(1:1000, 500, replace = TRUE)), ]

## get only unique rows
head(funique(dd))

## check output
identical(unique(dd), funique(dd))

funique documentation built on May 1, 2019, 8:07 p.m.