Trailing moving missing observations.

n-period trailing number of missing observations, ignoring NAs.

Syntax: @mnas(x, n)

x: series, alpha

n integer, series

Return: series

For each observation and integer , count the number of missing (NA) observations in the current and previous observations of the series,

Equivalent to @movnas.

Examples

show @mnas(x, 12)

produces a linked series of NA counts based on a 12-period moving window over the series x.

Cross-references

See also
@mobs.