tidyft: lag_lead – R documentation

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lag_lead

Fast lead/lag for vectors

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

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

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

`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`

A vector

lead(1:5)
lag(1:5)
lead(1:5,2)
lead(1:5,n = 2,fill = 0)

Tidy Verbs for Fast Data Operations by Reference

v0.4.5

MIT + file LICENSE

Authors

Tian-Yuan Huang [aut, cre] (<https://orcid.org/0000-0002-3591-4203>)

Initial release