lag_lead: Fast lead/lag for vectors

In hope-data-science/tidydt: Tidy Verbs for 'data.table'

Description

Analogous function for lead and lag in dplyr by wrapping data.table's shift.

Usage

lead_dt(x, n = 1L, fill = NA)

lag_dt(x, n = 1L, fill = NA)

Arguments

x	A vector
n	a positive integer of length 1, giving the number of positions to lead or lag by. Default uses 1
fill	Value to use for padding when the window goes beyond the input length. Default uses NA

Value

A vector

See Also

lead,shift

Examples

lead_dt(1:5)
lag_dt(1:5)
lead_dt(1:5,2)
lead_dt(1:5,n = 2,fill = 0)

hope-data-science/tidydt documentation built on Feb. 21, 2020, 10:25 a.m.