Lag: Contextual lag with intrapolation

In gmonette/spida2: Collection of tools developed for the Summer Programme in Data Analysis 2000-2012

Contextual lag with intrapolation

Description

Lags within clusters based on a time vector with possibly unequal intervals

Usage

Lag(
  x,
  id = rep(1, length(x)),
  idx = 1:length(x),
  lag = 1,
  at = NULL,
  check = T
)

Arguments

x	vector to be lagged
id	clustering variable
idx	time variable
lag	(default 1)
at	alternative to 'lag': evaluate x at a particular value of 'idx'
check	(default TRUE) check for unique values of idx within each cluster

Value

return the value of 'x' in the position 'idx - lag' in the same cluster

See Also

LagI, DiffI, Diff,

gmonette/spida2 documentation built on Aug. 11, 2024, 7:52 p.m.