* StateRegions2 Example
  Classify states by the four census regions:
  Northeast, Midwest, South, and West.
  Use a select statement;

options ls=64 nodate pageno=1;
data states;
   infile 'c:/datasets/states2.txt' truncover;
   input state $14.;
   select(state);
      when ('Maine', 'New Hampshire', 'Vermont', 'Massachusetts',
            'Rhode Island', 'Connecticut', 'New York', 'Pennsylvania',
            'New Jersey', 'Northeast') 
         region = 'Northeast';
      when ('Wisconsin', 'Michigan', 'Illinois', 'Indiana', 'Ohio',
            'Missouri', 'North Dakota', 'South Dakota', 'Nebraska', 
            'Kansas', 'Minnesota', 'Iowa') 
         region = 'Midwest';

      when ('Delaware', 'Maryland', 'Virginia', 'West Virginia',
             'North Carolina', 'South Carolina', 'Georgia', 'Florida',
             'Kentucky', 'Kentucky', 'Tennessee', 'Mississippi', 
             'Alabama', 'Oklahoma', 'Texas', 'Arkansas', 'Louisiana')
         region = 'South';

      when ('Idaho', 'Montana', 'Wyoming', 'Nevada', 'Utah', 'Colorado',
            'Arizona', 'New Mexico', 'Alaska', 'Washington', 'Oregon', 
            'California', 'Hawaii')
         region = 'West';
      otherwise;
   end;

proc print;

run;
quit;