sortEnds: Select the Top-n Highest or Lowest Values in a Vector

In mrdwab/SOfun: Functions From Answers to R Questions on Stack Overflow

Description

Takes "n" values from the head or tail of a sorted vector. Utilizes the "partial" argument from sort for increased efficiency.

Usage

sortEnds(invec, n, where = "head")

Arguments

invec	The input vector
n	The number of values desired
where	Either "head" or "tail".

Value

A sorted vector of length = n

Note

The "tail" approach may not be consideraby faster than the standard approach.

Author(s)

Ananda Mahto

Examples

set.seed(1)
x <- sample(300, 45, TRUE)
sortEnds(x, 3)
sortEnds(x, 3, "tail")

## Compare with
head(sort(x), 3)
tail(sort(x), 3)

mrdwab/SOfun documentation built on June 20, 2020, 6:15 p.m.