uniqueP: Unique collapse of character vector

In NRGI/nrgiR: Use R at NRGI

Unique collapse of character vector

Description

Paste a character vector's unique values into a single string.

Usage

uniqueP(x, collapse="; ", sort=TRUE)

Arguments

x	character vector.
collapse	character string to be pasted between x elements.
sort	TRUE/FALSE. Sorted the elements alphabetically before being collapsed?

Examples

vec = c("apple","banana","banana","corn","corn","tomato")

uniqueP(vec)

#Use with \emph{data.table} syntax
dt = data.table(group=c("A","A","A","B","B","B","B"), name=c("Mary","Mary","Jim","Bill","Fred","Bill","Anne"))

dt[, uniqueP(name), by=.(group)]

NRGI/nrgiR documentation built on April 3, 2022, 9:20 a.m.