first_unique: Retrieve the First Incidence of Each Element of a Vector

In danjamesadams/Dantools: A Veritable Plethora of Helper Functions

Description

This function returns a vector of indices of the first occurence of each unique element of a provided vector.

Usage

first_unique(redundantvec)

Arguments

redundantvec

The vector with repeated values. N.B. Providing a vector with no repeated values will return the equivalent of 1:length(redundantvec).

Examples

arbitraryvec <- c(1:5, rep(c(6, 7), times = 3), 8:10)
length(arbitraryvec)
[1] 14

first_unique(arbitraryvec)
[1] 1 2 3 4 5 6 7 12 13 14

danjamesadams/Dantools documentation built on Aug. 24, 2019, 6:15 p.m.