Command Reference : Function Reference : Function Reference: M
  
 
@msum
Trailing moving sums (ignore NAs).
n-period trailing moving sums, ignoring NAs.
Syntax: @msum(x, n)
x: series
n integer, series
Return: series
For each observation and integer , compute the sum () using the current and previous observations of the series,
and ignoring missing values (NAs).
If n is not an integer, the integer floor will be used.
Examples
show @msum(x, 12)
produces a linked series of the moving sum of the series x where NAs are ignored.
Cross-references
See also @msumsq.
For the NA-propagating variant of this function, see @movsum.