diff {tframe} | R Documentation |
lag a tframed object.
diff(x, ...) diff(x, lag = 1, differences = 1, ...)
x |
a tframed object. |
lag |
difference calculated relative to lag periods previous. |
differences |
order of differencing. |
... |
arguments passed to other methods. |
A time framed object is created by differencing the number of times indicated by differences at a lagged number of periods indicated by lag. The default is take the difference from data one period previous. For lag see documentation for the generic (from library ts in R).
z <- ts(rnorm(100), start=c(1982,1), frequency=12) start(z) periods(z) z <- diff(z) start(z) periods(z)