this_by_n: Apply This By Every n Values

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

Description

Applies a function by every n values to a vector.

Usage

this_by_n(invec, n = 3, FUN = sum, fill = NA, include_first = TRUE)

Arguments

invec	The input vector.
n	By how many values?
FUN	The function to apply to each set of n values.
fill	The value to padd the resulting vector with. Defaults to NA.
include_first	Logical. Should the first value be included. Defaults to TRUE.

Value

A vector the same length as the input vector.

Author(s)

Ananda Mahto

References

http://stackoverflow.com/q/34563693/1270695

Examples

x <- c(1, 2, 3, 4, 7, 9, 2, 4)
this_by_n(x, 3, mean)
this_by_n(x, 2, max)
this_by_n(x, 4, min)
this_by_n(letters[1:10], 5, toString)

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