Model Identification

/*--------------------------------------------------------------

                    SAS Sample Library

        Name: x13ex01.sas
 Description: Example program from SAS/ETS User's Guide,
              The X13 Procedure
       Title: Model Identification
     Product: SAS/ETS Software
        Keys: seasonal adjustment of time series
        PROC: X13
       Notes:

--------------------------------------------------------------*/

ods graphics on;

data sales;
   set sashelp.air;
   sales = air;
   date = intnx( 'month', '01sep78'd, _n_-1 );
   format date monyy.;
run;

proc x13 data=sales date=date;
   var sales;
   transform power=0;
   identify diff=(0,1) sdiff=(0,1);
run;