Using the Output Delivery System

You can use the ODS SELECT statement to deliver only a subset of the tables or graphs to ODS destinations. The following statements create an input SAS data set and use PROC GLM to perform an analysis of an unbalanced two-way experimental design:

title 'Unbalanced Two-way Design';
data twoway;
   input Treatment Block y @@;
   datalines;
1 1 17   1 1 28   1 1 19   1 1 21   1 1 19   1 2 43   
1 2 30   1 2 39   1 2 44   1 2 44   1 3 16
2 1 21   2 1 21   2 1 24   2 1 25   2 2 39   2 2 45   
2 2 42   2 2 47   2 3 19   2 3 22   2 3 16
3 1 22   3 1 30   3 1 33   3 1 31   3 2 46   3 3 26   
3 3 31   3 3 26   3 3 33   3 3 29   3 3 25
;

proc glm data=twoway;
   class Treatment Block;
   model y = Treatment | Block;
   means Treatment;
   lsmeans Treatment;
   ods select ModelANOVA Means;
   ods trace on;
   ods show;
run;

The ODS SELECT statement selects only two tables (ModelANOVA and Means) for display in the ODS destinations. In this example, no ODS destinations are explicitly opened. Therefore, only the default destination (usually LISTING or HTML) receives the procedure output. See the section Output Defaults for more information about default destinations. The ODS SHOW statement displays the current overall selection list in the SAS log. The ODS SHOW statement is not required; it is used here simply to show the effects of the ODS SELECT statement. The results of the ODS SHOW statement are as follows:

   Current OVERALL select list is:
   1. ModelANOVA
   2. Means

The ODS TRACE statement writes the trace record of the ODS output objects to the SAS log. The trace record is as follows:

   Output Added:
   -------------
   Name:       ModelANOVA
   Label:      Type I Model ANOVA
   Template:   stat.GLM.Tests
   Path:       GLM.ANOVA.y.ModelANOVA
   -------------

   Output Added:
   -------------
   Name:       ModelANOVA
   Label:      Type III Model ANOVA
   Template:   stat.GLM.Tests
   Path:       GLM.ANOVA.y.ModelANOVA
   -------------

   Output Added:
   -------------
   Name:       Means
   Label:      Means
   Template:   stat.GLM.Means
   Path:       GLM.Means.Treatment.Means
   -------------

There are two tables with the name ModelANOVA. One contains the "Type I Model ANOVA" table, and the other contains the "Type III Model ANOVA" table. If you want to select only one of them, you can specify either of the labels in the ODS SELECT statement instead of the name. You specify one of the following:

   ods select 'Type I Model ANOVA' Means;
   ods select 'Type III Model ANOVA' Means;

In the following statements, the ODS SHOW statement writes the current overall selection list to the SAS log, the QUIT statement ends the PROC GLM step, and the second ODS SHOW statement writes the selection list to the log after PROC GLM terminates:

ods show;
quit;
ods show;

The results of these statements are as follows:

ods show;

   Current OVERALL select list is:
   1. ModelANOVA
   2. Means

quit;
ods show;

   Current OVERALL select list is: ALL

PROC GLM supports interactive RUN-group processing. Before the QUIT statement is executed, PROC GLM is active and the ODS selection list remains at its previous setting. The list includes only the two tables, ModelANOVA and Means. After the QUIT statement, when PROC GLM is no longer active, the selection list is reset to ALL. The displayed output, shown in Output 20.2.1, consists of the three selected tables (two ModelANOVA tables and the Means table). The LS-means results are not displayed even though an LSMEANS statement was specified. This is because the LS-means table, named LSMeans, is not specified in the ODS SELECT statement. Other tables are suppressed as well.

For more information about ODS exclusion and selection lists, see the section The ODS Statement.