/* nag_mv_discrim_mahaldist (g03dbc) Example Program.
 *
 * Copyright 1998 Numerical Algorithms Group.
 *
 * Mark 5, 1998.
 *
 */

#include <nag.h>
#include <stdio.h>
#include <nag_stdlib.h>
#include <nagg03.h>

#define NMAX 21
#define MMAX 2
#define GPMAX 3

int main(void)
{
  double d[NMAX][GPMAX], det[GPMAX],
  gc[(GPMAX+1)*MMAX*(MMAX+1)/2], gmean[GPMAX][MMAX],
  wt[NMAX], x[NMAX][MMAX];
  double stat;
  double df;
  double sig;
  double *wtptr=0;

  Integer nobs, nvar;
  Integer  ing[NMAX], isx[MMAX], nig[GPMAX];
  Integer i, j, m, n;
  Integer ng;
  Integer tdd=GPMAX, tdgmean=MMAX, tdx=MMAX;

  char char_equal[2];
  char weight[2];

  Nag_GroupCovars equal;

  Vprintf("g03dbc Example Program Results\n\n");

  /* Skip headings in data file */
  Vscanf("%*[^\n]");

  Vscanf("%ld",&n);
  Vscanf("%ld",&m);
  Vscanf("%ld",&nvar);
  Vscanf("%ld",&ng);
  Vscanf("%s",weight);

  if (n <= NMAX && m <= MMAX)
    {
      if (*weight == 'W')
        {
          for (i = 0; i < n; ++i)
            {
              for (j = 0; j < m; ++j)
                Vscanf("%lf",&x[i][j]);
              Vscanf("%ld",&ing[i]);
              Vscanf("%lf",&wt[i]);
            }
          wtptr = wt;
        }
      else
        {
          for (i = 0; i < n; ++i)
            {
              for (j = 0; j < m; ++j)
                Vscanf("%lf",&x[i][j]);
              Vscanf("%ld",&ing[i]);
            }
        }
      for (j = 0; j < m; ++j)
        Vscanf("%ld",&isx[j]);
      g03dac(n, m, &x[0][0], tdx, isx, nvar, ing, ng, wtptr, nig,
             &gmean[0][0], tdgmean, det, gc, &stat, &df, &sig, NAGERR_DEFAULT);
      Vscanf("%ld",&nobs);
      Vscanf("%s",char_equal);
      if (nobs <= NMAX)
        {
          for (i = 0; i < nobs; ++i)
            {
              for (j = 0; j < m; ++j)
                Vscanf("%lf",&x[i][j]);
            }
          if (*char_equal == 'E')
            {
              equal = Nag_EqualCovar;
            }
          else if (*char_equal == 'U')
            {
              equal = Nag_NotEqualCovar;
            }

          g03dbc(equal, Nag_SamplePoints, nvar, ng, &gmean[0][0], tdgmean, gc,
                 nobs, m, isx, &x[0][0], tdx, &d[0][0], tdd, NAGERR_DEFAULT);
          Vprintf("\n   Obs          Distances\n\n");
          for (i = 0; i < nobs; ++i)
            {
              Vprintf(" %3ld",i+1);
              for (j = 0; j < ng; ++j)
                Vprintf("%10.3f",d[i][j]);
              Vprintf("\n");
            }
        }
      return EXIT_SUCCESS;
    }
  else
    {
      Vprintf("Incorrect input value of n or m.\n");
      return EXIT_FAILURE;
    }
}