Evaluates the (
-day) Exponentially Weighted Moving Average (EWMA) of a time
series provided where
is the length of the time series array which is provided as a
parameter, for all periods for which sufficient data is provided.
- A collection of series objects. For example, to evaluate this indicator for two series
you will need to pass a series collection containing this two series.
- The number between 0 and 1 which is known as a smoothing factor.
The closer the value is to zero the more influence more resent measurements
will have on the EWMA.
- The number of periods over which the moving average is evaluated
for each period.
A series where the first term is the EWMA for the most recent period,
the second term is the EWMA for the previous period and so on.
|ArgumentException||Thrown if the Series is empty or if the value
given for the smoothing factor lies outside the closed range [0,1].|