window.tis: Time windows for Time Indexed Series
In tis: Time Indexes and Time Indexed Series

Description Usage Arguments Details Value Note Examples

window.tis extracts the subset of the object x observed between the times start and end.

1 2	## S3 method for class 'tis' window(x, start = NULL, end = NULL, extend = FALSE, noWarn = FALSE, ...)

`x`	a `tis` object
`start`	the start time of the period of interest.
`end`	the end time of the period of interest.
`extend`	logical. If `TRUE`, the `start` and `end` values are allowed to extend the series. If `FALSE`, attempts to extend the series are ignored and a warning is issued unless `noWarn` is `FALSE`.
`noWarn`	logical. If `FALSE` (the default), warnings are generated if `extend` is `FALSE` and either (i) `start` is earlier than the start of the series or (ii) `end` is later than the end of the series.
`...`	other arguments to this function are ignored.

The start and end times can be ti objects, or anything that ti(z, tif = tif, freq = frequency), can turn into a ti object.

A tis object that starts and ends at the given times.

The replacement method window<-.tis has not been implemented. Use the subscript operator with a ti argument to replace values of a tis object.

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z <- tis(1:24, start = c(2001,1), freq = 12)
z2 <- window(z, start = 19991231, extend = TRUE) ## z2 extends back with NA's
window(z, end = end(z) - 3)