/****************************************************************/

  /*          SAS SAMPLE LIBRARY                                  */

  /*                                                              */

  /*    NAME: CLUSTEX1                                            */

  /*   TITLE: DOCUMENTATION EXAMPLE 1 FROM PROC CLUSTER           */

  /* PRODUCT: STAT                                                */

  /*  SYSTEM: ALL                                                 */

  /*    KEYS: CLUSTER                                             */

  /*   PROCS: CLUSTER TREE STANDARD                               */

  /*    DATA:                                                     */

  /*                                                              */

  /*     REF:                                                     */

  /*    MISC:                                                     */

  /*                                                              */

  /****************************************************************/

 TITLE 'CLUSTER ANALYSIS OF FLYING MILEAGES BETWEEN 10 AMERICAN CITIES';

 

 DATA   MILEAGES(TYPE=DISTANCE);

 INPUT  (ATLANTA CHICAGO DENVER HOUSTON LOSANGEL

        MIAMI NEWYORK SANFRAN SEATTLE WASHDC) (5.)

        @56 CITY $15.;

 CARDS;

     0                                                  ATLANTA

   587    0                                             CHICAGO

  1212  920    0                                        DENVER

   701  940  879    0                                   HOUSTON

  1936 1745  831 1374    0                              LOS ANGELES

   604 1188 1726  968 2339    0                         MIAMI

   748  713 1631 1420 2451 1092    0                    NEW YORK

  2139 1858  949 1645  347 2594 2571    0               SAN FRANCISCO

  2182 1737 1021 1891  959 2734 2408  678    0          SEATTLE

   543  597 1494 1220 2300  923  205 2442 2329    0     WASHINGTON D.C.

 ;

 

 PROC CLUSTER DATA=MILEAGES METHOD=AVERAGE PSEUDO;

    ID CITY;

 PROC TREE HORIZONTAL SPACES=2;

    ID CITY;

 

 PROC CLUSTER DATA=MILEAGES METHOD=CENTROID PSEUDO;

    ID CITY;

 PROC TREE HORIZONTAL SPACES=2;

    ID CITY;

 

 PROC CLUSTER DATA=MILEAGES METHOD=DENSITY K=3;

    ID CITY;

 PROC TREE HORIZONTAL SPACES=2;

    ID CITY;

 

 PROC CLUSTER DATA=MILEAGES METHOD=SINGLE;

    ID CITY;

 PROC TREE HORIZONTAL SPACES=2;

    ID CITY;

 

 PROC CLUSTER DATA=MILEAGES METHOD=TWOSTAGE K=3;

    ID CITY;

 PROC TREE HORIZONTAL SPACES=2;

    ID CITY;

 

 PROC CLUSTER DATA=MILEAGES METHOD=WARD PSEUDO;

    ID CITY;

 PROC TREE HORIZONTAL SPACES=2;

    ID CITY;