options nodate;
data candidates;
do trt=1 to 6;
output;
end;
proc optex data=candidates;
   class trt;
   model trt;
   blocks structure=(15)2;
   examine design info variance;
   run;


























































                                      Point      Block
                                     Number     Number     trt
                                     ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ
                                          1          1      6
                                          2          1      2
                                          3          2      5
                                          4          2      3
                                          5          3      4
                                          6          3      1
                                          7          4      5
                                          8          4      2
                                          9          5      4
                                         10          5      6
                                         11          6      3
                                         12          6      6
                                         13          7      2
                                         14          7      1
                                         15          8      1
                                         16          8      5
                                         17          9      3
                                         18          9      4
                                         19         10      4
                                         20         10      5
                                         21         11      2
                                         22         11      3
                                         23         12      1
                                         24         12      6
                                         25         13      1
                                         26         13      3
                                         27         14      5
                                         28         14      6
                                         29         15      2
                                         30         15      4




























                                          The SAS System                                         21

                                        The OPTEX Procedure
                                     Examining Design Number 1

                                   Treatment Information Matrix

                                trt1      trt2      trt3      trt4      trt5

                      trt1         6         3         3         3         3
                      trt2         3         6         3         3         3
                      trt3         3         3         6         3         3
                      trt4         3         3         3         6         3
                      trt5         3         3         3         3         6


                                    Treatment Variance Matrix

                             trt1        trt2        trt3        trt4        trt5

                 trt1       0.278      -0.056      -0.056      -0.056      -0.056
                 trt2      -0.056       0.278      -0.056      -0.056      -0.056
                 trt3      -0.056      -0.056       0.278      -0.056      -0.056
                 trt4      -0.056      -0.056      -0.056       0.278      -0.056
                 trt5      -0.056      -0.056      -0.056      -0.056       0.278