spec.taper               package:stats               R Documentation

Taper a Time Series by a Cosine Bell

Description:

     Apply a cosine-bell taper to a time series.

Usage:

     spec.taper(x, p = 0.1)

Arguments:

       x: A univariate or multivariate time series

       p: The proportion to be tapered at each end of the series,
          either a scalar (giving the proportion for all series) or a
          vector of the length of the number of series (giving the
          proportion for each series..

Details:

     The cosine-bell taper is applied to the first and last 'p[i]'
     observations of time series 'x[, i]'.

Value:

     A new time series object.

See Also:

     'spec.pgram', 'cpgram'

