/* nag_mv_z_scores (g03zac) Example Program.
 *
 * Copyright 1998 Numerical Algorithms Group.
 *
 * Mark 5, 1998.
 * Mark 8 revised, 2004.
 *
 */

#include <nag.h>
#include <nagx04.h>
#include <stdio.h>
#include <nag_stdlib.h>
#include <nagg03.h>

#define X(I, J) x[(I) *tdx + J]
#define Z(I, J) z[(I) *tdz + J]
int main(int argc, char *argv[])
{
  FILE     *fpin, *fpout;
  Integer  exit_status = 0, i, *isx = 0, j, m, n, nvar, tdx, tdz;
  NagError fail;
  double   *e = 0, *s = 0, *x = 0, *z = 0;

  INIT_FAIL(fail);

  /* Check for command-line IO options */
  fpin = nag_example_file_io(argc, argv, "-data", NULL);
  fpout = nag_example_file_io(argc, argv, "-results", NULL);

  fprintf(fpout, "nag_mv_z_scores (g03zac) Example Program Results\n\n");

  /* Skip headings in data file */
  fscanf(fpin, "%*[^\n]");
  fscanf(fpin, "%ld", &n);
  fscanf(fpin, "%ld", &m);
  fscanf(fpin, "%ld", &nvar);

  if (n >= 1 && nvar >= 1 && m >= nvar)
    {
      if (!(e = NAG_ALLOC(m, double)) ||
          !(s = NAG_ALLOC(m, double)) ||
          !(x = NAG_ALLOC((n)*(m), double)) ||
          !(z = NAG_ALLOC((n)*(nvar), double)) ||
          !(isx = NAG_ALLOC(m, Integer)))
        {
          fprintf(fpout, "Allocation failure\n");
          exit_status = -1;
          goto END;
        }
      tdx = m;
      tdz = nvar;
    }
  else
    {
      fprintf(fpout, "Invalid n or nvar.\n");
      exit_status = 1;
      return exit_status;
    }
  for (i = 0; i < n; ++i)
    {
      for (j = 0; j < m; ++j)
        fscanf(fpin, "%lf", &X(i, j));
    }
  for (j = 0; j < m; ++j)
    fscanf(fpin, "%ld", &isx[j]);

  for (j = 0; j < m; ++j)
    fscanf(fpin, "%lf", &e[j]);

  for (j = 0; j < m; ++j)
    fscanf(fpin, "%lf", &s[j]);

  /* nag_mv_z_scores (g03zac).
   * Standardize values of a data matrix
   */
  nag_mv_z_scores(n, m, x, tdx, nvar, isx, s, e, z, tdz, &fail);
  if (fail.code != NE_NOERROR)
    {
      fprintf(fpout, "Error from nag_mv_z_scores (g03zac).\n%s\n",
              fail.message);
      exit_status = 1;
      goto END;
    }

  fprintf(fpout, "\nStandardized Values\n\n");
  for (i = 0; i < n; ++i)
    {
      for (j = 0; j < nvar; ++j)
        fprintf(fpout, "%8.3f", Z(i, j));
      fprintf(fpout, "\n");
    }
 END:
  if (fpin != stdin) fclose(fpin);
  if (fpout != stdout) fclose(fpout);
  if (e) NAG_FREE(e);
  if (s) NAG_FREE(s);
  if (x) NAG_FREE(x);
  if (z) NAG_FREE(z);
  if (isx) NAG_FREE(isx);
  return exit_status;
}