| Details of the OPTEX Procedure |
EXAMINE Statement
- EXAMINE <options> ;
-
You use the EXAMINE statement to display the characteristics of a selected
design. By default, the EXAMINE statement lists certain measures of design
efficiency for the best design. (See the "Output" section.)
The following options can be used to modify the output:
- DESIGN
-
lists the actual points in the selected design.
- INFORMATION
- INFO
- I
-
lists the information matrix X'X for the selected design.
- NUMBER=design-number
-
selects a design to examine by specifying its design-number.
Designs are ordered by the value of the efficiency criterion that
is being optimized. Thus, a design-number of 1 corresponds
to the best design found, a design-number of 2 corresponds
to the second best design, and so on. The
default design-number is 1. To modify the number of
designs created, see the
ITER= option.
- VARIANCE
- VAR
- V
-
lists the variance matrix (X'X)-1 for the parameter estimates
for the selected design.
For details on design efficiencies, see "Design Efficiency Measures"
.
If you use the OPTEX procedure interactively, you must enter the options
for every EXAMINE statement. For example, the following statements list
default information and the design points for the best design but only
default information for the second-best design:
examine number=1 design;
examine number=2;
The following statements list default information and design points
for both the best and second-best designs:
examine number=1 design;
examine number=2 design;
Copyright © 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.
