lagk: Create a lagged variable

In JWiley/JWileymisc: Miscellaneous Utilities and Functions

Create a lagged variable

Description

Given a variable, create a k lagged version, optionally do it by a grouping factor, such as an ID.

Usage

lagk(x, k = 1, by)

Arguments

x	the variable to lag
k	the length to lag it
by	a variable to lag by. Must be sorted.

Value

a vector of the lagged values

Examples

lagk(1:4, 1)

JWiley/JWileymisc documentation built on Feb. 15, 2024, 12:23 p.m.