*********************************************************;
*** FINDING IV-EFFICIENT DESIGN USING THE D-CRITERION ***;
***        AVERAGING OVER 5^3 CANDIDATE POINTS        ***;
*********************************************************;

OPTION PS=60 LS=64 NODATE NONUMBER;

DATA IN;
     DO X1=-1 TO 1 BY .5;
     DO X2=-1 TO 1 BY .5;
     DO X3=-1 TO 1 BY .5; OUTPUT; END; END; END;
TITLE;

PROC OPTEX DATA=IN SEED=1087;
  EXAMINE DESIGN;
  MODEL X1|X2|X3@2 X1*X1 X2*X2 X3*X3;
  GENERATE METHOD=FEDOROV ITER=40 CRITERION=D N=16;
  OUTPUT OUT=DSGN1 NUMBER=VBEST;
TITLE 'FIND IV-EFFICIENT DESIGN USING THE D-CRITERION';
TITLE2 'AVERAGING OVER 5^3 CANDIDATE POINTS';
PROC PRINT DATA=DSGN1;

*********************************************************;
*** FINDING IV-EFFICIENT DESIGN USING THE D-CRITERION ***;
***       AVERAGING OVER 11^3 CANDIDATE POINTS        ***;
*********************************************************;

DATA IN;
     DO X1=-1 TO 1 BY .2;
     DO X2=-1 TO 1 BY .2;
     DO X3=-1 TO 1 BY .2; OUTPUT; END; END; END;
TITLE;

PROC OPTEX DATA=IN SEED=1087;
  EXAMINE DESIGN;
  MODEL X1|X2|X3@2 X1*X1 X2*X2 X3*X3;
  GENERATE METHOD=FEDOROV ITER=40 CRITERION=D N=16;
  OUTPUT OUT=DSGN2 NUMBER=VBEST;
TITLE  'FIND IV-EFFICIENT DESIGN USING THE D-CRITERION';
TITLE2 'AVERAGING OVER 11^3 CANDIDATE POINTS';
PROC PRINT DATA=DSGN2;

RUN;