Returns a time series with a new start and/or end.
USAGE:
window(x, start=start(x), end=end(x))
REQUIRED ARGUMENTS:
x:
univariate or multivariate time series. Missing values (NAs) are allowed.
OPTIONAL ARGUMENTS:
start:
new starting date for the series; if earlier than the starting date
of x, no change is made.
This can be either a single numeric value, or a length 2 integer vector
giving the period and the position within the period.
If start falls between two actual sampling times then it takes the value of the
later one.
end:
new ending date for the series; if later than the ending date of x,
no change is made.
This can be either a single numeric value, or a length 2 integer vector
giving the period and the position within the period.
If end falls between two actual sampling times then it takes the value of the
earlier one.
VALUE:
a univariate or multivariate time series like x
giving the data between the new start and end dates.