Moving average function for dynamic arrays
With increasing use of dynamic arrays for time series data such as stock prices we need a way of doing moving averages with dynamic arrays.
I suggest something like
MOVAVG (RangeArray, N, MAMethod [, Down] [,StartExp])
where N is the number of periods in the moving average and MA-Method controls the MA calculation method method (Simple, Central, Cumulative, Weighted, Exponential, Double Exponential etc)