# lag

0th

Percentile

##### Lag a Time Series

Compute a lagged version of a time series, shifting the time base back by a given number of observations. lag is a generic function; this page documents its default method.

Keywords
ts
##### Usage
lag(x, ...)
"lag"(x, k = 1, ...)
##### Arguments
x
A vector or matrix or univariate or multivariate time series
k
The number of lags (in units of observations).
...
further arguments to be passed to or from methods.
##### Details

Vector or matrix arguments x are given a tsp attribute via hasTsp.

##### Value

A time series object with the same class as x.

##### Note

Note the sign of k: a series lagged by a positive k starts earlier.

##### References

Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.

diff, deltat
library(stats) lag(ldeaths, 12) # starts one year earlier