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Mixed-Level Designs Using Pseudofactors

/****************************************************************/
/*          S A S   S A M P L E   L I B R A R Y                 */
/*                                                              */
/*    NAME: FACTEX6A                                            */
/*   TITLE: Mixed-Level Designs Using Pseudofactors             */
/* PRODUCT: QC                                                  */
/*  SYSTEM: ALL                                                 */
/*    KEYS: Design of Experiments, Factorial Designs,           */
/*   PROCS: FACTEX                                              */
/*    DATA:                                                     */
/*                                                              */
/*     REF: SAS/QC Software:  Usage and Reference, Version 6,   */
/*          First Edition, Volume 1 and Volume 2                */
/*    MISC:                                                     */
/*                                                              */
/****************************************************************/

proc factex;
   factors A1 A2 B C D;
   model estimate     =(B C D   A1|A2                  )
         nonnegligible=(B|C|D@2 A1|A2|B A1|A2|C A1|A2|D);
   size design=16;
   output out=DesignA [A1 A2]=A cvals = ('A' 'B' 'C' 'D');
run;
proc print;
   var A B C D;
run;