 
      SUBROUTINE RELOC(MM, M, N, A, K, NC, DMU, U, WORK)
C
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C
C   PURPOSE
C   -------
C
C      SETS EACH CLUSTER CENTER EQUAL TO THE CLUSTER MEAN.  CAN BE USED
C      WITH CLUSTER SUBROUTINE ASSIGN TO FORM A USER-DEFINED K-MEANS
C      PACKAGE
C
C   DESCRIPTION
C   -----------
C
C   1.  THE VARIABLES MUST BE SCALED SIMILARLY (CLUSTER SUBROUTINE
C       STAND CAN BE USED TO STANDARDIZE THE VARIABLES).
C
C   2.  MISSING VALUES ARE DENOTED BY 99999.  AND DO NOT AFFECT THE
C       COMPUTATION OF THE VARIABLE MEANS.
C
C   INPUT PARAMETERS
C   ----------------
C
C   MM    INTEGER SCALAR (UNCHANGED ON OUTPUT).
C         THE FIRST DIMENSION OF THE MATRIX A.  MUST BE AT LEAST M.
C
C   M     INTEGER SCALAR (UNCHANGED ON OUTPUT).
C         THE NUMBER OF CASES.
C
C   N     INTEGER SCALAR (UNCHANGED ON OUTPUT).
C         THE NUMBER OF VARIABLES.
C
C   A     REAL MATRIX WHOSE FIRST DIMENSION MUST BE MM AND WHOSE SECOND
C            DIMENSION MUST BE AT LEAST N (UNCHANGED ON OUTPUT).
C         THE MATRIX OF DATA VALUES.
C
C         A(I,J) IS THE VALUE FOR THE J-TH VARIABLE FOR THE I-TH CASE.
C
C   K     INTEGER SCALAR (UNCHANGED ON OUTPUT).
C         THE NUMBER OF CLUSTERS.
C
C   NC    INTEGER VECTOR DIMENSIONED AT LEAST M (UNCHANGED ON OUTPUT).
C         NC(I) IS THE CLUSTER FOR CASE I.
C
C   DMU   INTEGER SCALAR (UNCHANGED ON OUTPUT).
C         THE FIRST DIMENSION OF THE MATRIX U.  MUST BE AT LEAST N.
C
C   WORK  REAL VECTOR DIMENSIONED AT LEAST N.
C         WORK VECTOR.
C
C   OUTPUT PARAMETER
C   ----------------
C
C   U     REAL MATRIX WHOSE FIRST DIMENSION MUST BE DMU AND WHOSE SECOND
C            DIMENSION MUST BE AT LEAST K.
C         U(I,J) STORES THE VALUE OF VARIABLE I FOR THE CENTER OF
C            CLUSTER J, (IE. THE MEAN VALUE OF VARIABLE I OVER THE
C            CASES IN CLUSTER J).
C
C   REFERENCE
C   ---------
C
C     HARTIGAN, J. A. (1975).  CLUSTERING ALGORITHMS, JOHN WILEY &
C        SONS, INC., NEW YORK.  PAGES 84-105.
C
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