Command Reference : Function Reference : Function Reference: M
  
 
@movcovs
Trailing moving sample covariance (d.f. adjusted; propagate NAs).
n-period trailing moving Pearson product moment sample covariances between a pair of variables, with d.f. correction, propagating NAs.
Syntax: @movcovs(x, y, n)
x: series
y: series
n integer, series
Return: series
For each observation and integer , compute the sample covariance () 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 @movcov(x, y, 12)
produces a linked series of the moving sample covariance of the series x and y where NAs are propagated.
Cross-references
See also @movcov and @movcovp.
See @mcov for NA-excluding version of this function.