lag_by_group: Generate lags in grouped data

In rdss: Companion Datasets and Functions for Research Design in the Social Sciences

Generate lags in grouped data

Description

See https://book.declaredesign.org/observational-causal.html#difference-in-differences

Usage

lag_by_group(x, groups, n = 1, order_by, default = NA)

Arguments

x	Vector of values
groups	Grouping variable
n	Positive integer of length 1, giving the number of positions to lead or lag by
order_by	Ordering variable withing group (e.g., time)
default	Value used for non-existent rows. Defaults to NA.

Value

vector of lagged values

rdss documentation built on Oct. 11, 2024, 1:08 a.m.