Day of observation.
Syntax: @day
Return: series
Returns the day of the month (1-31) associated with each observation in the workfile.
• If the workfile is of lower than daily frequency, all observations will be set to 1.
• If the workfile is undated, observations will be set to -1.
Examples
series dt = @day
saves the days of the month into the series DT.
The command
smpl if @day > 29
sets the sample to only use days 30 and 31 of months.
Cross-references