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Example 2.9: CALEDATA and WORKDATA data sets

   /* Set up a 6-day work week, with Sundays off */
   data calendar;
      _sun_='holiday';
      run;

   title 'Scheduling on the 6-Day Week';
   proc cpm data=widget9 holidata=holidays
            out=savec date='2dec91:07:00'dt
            interval=dtday daylength='08:30't
            calendar=calendar;
      activity task;
      succ     succ1 succ2 succ3;
      duration days;
      holiday  holiday / holifin=(holifin);
      run;

   proc cpm data=widget9 holidata=holidays
            out=savecw date='2dec91'd
            interval=day
            workday=workdat calendar=caldat;
      activity task;
      succ     succ1 succ2 succ3;
      duration days;
      holiday  holiday / holifin=(holifin);
      run;

Note that, in this case, it was not necessary to specify the DAYLENGTH=, DAYSTART=, or INTERVAL= option in the PROC CPM statement. The default value of INTERVAL=DAY is assumed, and the CALDAT and WORKDAT data sets define the workday and work week completely. The length of a standard working day is also included in the Calendar data set, completing all the necessary specifications.

To visualize the breaks in the work schedule created by these specifications, you can use the following simple data set with a dummy activity `Schedule Breaks' to produce a Gantt chart, shown in Output 2.9.6. The period illustrated on the chart is from December 20, 1991 to December 28, 1991. The breaks are denoted by *.

   /* To visualize the breaks, use following "dummy" data set
      to plot a schedule bar showing holidays and breaks */
   data temp;
      e_start='20dec91:08:00'dt;
      e_finish='28dec91:23:59:59'dt;
      task='Schedule Breaks';
      label task='Project Calendar';
      format e_start e_finish datetime16.;
      run;

   options ps=20;
   title2 'Holidays and Breaks in the Project Calendar';
   proc gantt data=temp lineprinter
              calendar=caldat holidata=holidays
              workday=workdat;
      chart / interval=dtday mininterval=dthour skip=0
              holiday=(holiday) holifin=(holifin) markbreak
              nojobnum nolegend increment=8 holichar='*';
      id task;
      run;

                          DEC     DEC     DEC     DEC     DEC     DEC           
       Project            20      20      21      21      21      22            
       Calendar           08:00   16:00   00:00   08:00   16:00   00:00         
                         -+-------+-------+-------+-------+-------+-            
       Schedule Breaks   |<-------****************----*************|            
                         -+-------+-------+-------+-------+-------+-            

         DEC     DEC     DEC     DEC     DEC     DEC     DEC     DEC            
         22      22      22      23      23      23      24      24             
         00:00   08:00   16:00   00:00   08:00   16:00   00:00   08:00          
        -+-------+-------+-------+-------+-------+-------+-------+-             
        |********************************--------****************-|             
        -+-------+-------+-------+-------+-------+-------+-------+-             

         DEC     DEC     DEC     DEC     DEC     DEC     DEC     DEC            
         24      24      25      25      25      26      26      26             
         08:00   16:00   00:00   08:00   16:00   00:00   08:00   16:00          
        -+-------+-------+-------+-------+-------+-------+-------+-             
        |--------*************************************************|             
        -+-------+-------+-------+-------+-------+-------+-------+-             

         DEC     DEC     DEC     DEC     DEC     DEC     DEC     DEC            
         26      27      27      27      28      28      28      29             
         16:00   00:00   08:00   16:00   00:00   08:00   16:00   00:00          
        -+-------+-------+-------+-------+-------+-------+-------+-             
        |****************************************----*************|             
        -+-------+-------+-------+-------+-------+-------+-------+-             

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