/*-----------------------------------------------------------------
            S A S   S A M P L E   L I B R A R Y                   
                                                                  
      NAME: GLMABSRB                                              
     TITLE: Details Example 3 for PROC GLM                        
   PRODUCT: STAT                                                  
    SYSTEM: ALL                                                   
      KEYS: Absorption in ANOVA                                   
     PROCS: GLM                                                   
      DATA:                                                       
                                                                  
   SUPPORT: sasrdt                                                
       REF: PROC GLM, DETAILS EXAMPLE 3.                          
      MISC:                                                       
-----------------------------------------------------------------*/

/* Savings in Computing by Using the ABSORB Statement ----------*/
data a;
   do herd=1 to 40;
      do cow=1 to 30;
         do treatment=1 to 3;
            do rep=1 to 2;
               y = herd/5 + cow/10 + treatment + rannor(1);
               output;
            end;
         end;
      end;
   end;
run;
proc glm data=a;
   absorb herd cow;
   class treatment;
   model y = treatment;
run;