diff_i: Lagged Differences for Integer Values

In dvmisc: Faster Computation of Common Statistics and Miscellaneous Functions

Description

Written in C++, this function should always run faster than diff for calculating lagged differences for an integer vector.

Usage

diff_i(x, lag = 1L)

Arguments

x	Integer vector.
lag	Integer value.

Value

Integer vector.

Examples

# diff_i is typically much faster than diff
x <- rpois(1000, lambda = 5)
all.equal(diff(x, 2), diff_i(x, 2))
benchmark(diff(x, 2), diff_i(x, 2), replications = 2000)

dvmisc documentation built on May 2, 2019, 5:51 p.m.