Example 2 (DATE command)

DATE WEEK DAY 1 5 HOUR 1 8.

• This command creates four variables (DATE_, WEEK_, DAY_, and HOUR_) in a file where observations occur hourly in a 5-day, 40-hour week.
• For WEEK, the default starting value is 1 and the default periodicity is none.
• For DAY_, the starting value has to be specified, even though it is the same as the default, because a periodicity is specified. The periodicity of 5 means that observations are measured in a 5-day week.
• For HOUR_, a starting value of 1 is specified. The periodicity of 8 means that observations occur in an 8-hour day.

DATE reports the following:

  Name        Label

  WEEK_       WEEK, not periodic
  DAY_        DAY, period 5
  HOUR_       HOUR, period 24
  DATE_       DATE.  FORMAT:  "WWW D HH"

The following is a partial listing of the new variables:

   WEEK_ DAY_ HOUR_ DATE_

       1   1     1    1 1  1
       1   1     2    1 1  2
       1   1     3    1 1  3
       1   1     4    1 1  4
       1   1     5    1 1  5
       ...
       1   1    22    1 1 22
       1   1    23    1 1 23
       1   2     0    1 2  0
       1   2     1    1 2  1
       1   2     2    1 2  2
       ...
       4   5    16    4 5 16
       4   5    17    4 5 17
       4   5    18    4 5 18