Perform running mean smoothing of an EWS object
Performs running mean smoothing of bandwidth s of
an EWS, such as that returned by the
The spectrum to smooth
The bandwidth (or number of ordinates to include in the running mean)
Each level of the EWS is subject to a running mean smooth. After smoothing a level the resultant smooth is shorter than the original level (due to the mean not being able to overlap the boundaries). This deficit is made up by augmenting the start of the smooth with a right number of smoothed values taken from the first smoothed value.
A EWS object contained in a
wd object of type "station"
which contains the smoothed spectrum.
Cardinali, A. and Nason, Guy P. (2013) Costationarity of Locally Stationary Time Series Using costat. Journal of Statistical Software, 55, Issue 1.
Cardinali, A. and Nason, G.P. (2010) Costationarity of locally stationary time series. J. Time Series Econometrics, 2, Issue 2, Article 1.
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