/* nag_robust_m_estim_1var (g07dbc) Example Program. * * Copyright 1996 Numerical Algorithms Group. * * Mark 4, 1996. * * Mark 6 revised, 2000. * Mark 8 revised, 2004. */ #include #include #include #include #include int main(void) { Integer exit_status = 0, i, maxit, n, nit; Nag_SigmaSimulEst sigma_est; char sigma_est_str[20]; double c, dchi, h1, h2, h3, *rs = 0, sigma, sigsav, *sorted_x = 0, thesav, theta; double tol, *x = 0; NagError fail; INIT_FAIL(fail); printf( "nag_robust_m_estim_1var (g07dbc) Example Program Results\n\n"); /* Skip heading in data file */ scanf("%*[^\n]\n"); scanf("%ld %*[^\n]\n", &n); if (n > 1) { if (!(x = NAG_ALLOC(n, double)) || !(rs = NAG_ALLOC(n, double)) || !(sorted_x = NAG_ALLOC(n, double))) { printf("Allocation failure\n"); exit_status = -1; goto END; } } else { printf("Invalid n.\n"); exit_status = 1; return exit_status; } for (i = 1; i <= n; ++i) scanf("%lf", &x[i - 1]); scanf("%*[^\n]\n"); scanf("%lf %lf %lf %lf %ld %*[^\n]\n", &h1, &h2, &h3, &dchi, &maxit); printf("%25sInput parameters Output parameters\n", ""); printf( " sigma_est sigma theta tol sigma theta\n\n"); while ((scanf("%s %lf %lf %lf%*[^\n]", sigma_est_str, &sigma, &theta, &tol)) != EOF) { /* nag_enum_name_to_value(x04nac). * Converts NAG enum member name to value */ sigma_est = (Nag_SigmaSimulEst) nag_enum_name_to_value(sigma_est_str); sigsav = sigma; thesav = theta; c = 0.0; /* nag_robust_m_estim_1var (g07dbc). * Robust estimation, M-estimates for location and scale * parameters, standard weight functions */ nag_robust_m_estim_1var(sigma_est, n, x, Nag_HampelFun, c, h1, h2, h3, dchi, &theta, &sigma, maxit, tol, rs, &nit, sorted_x, &fail); if (fail.code != NE_NOERROR) { printf("Error from nag_robust_m_estim_1var (g07dbc).\n%s\n", fail.message); exit_status = 1; goto END; } printf("%s %8.4f %8.4f %7.4f %9.4f %8.4f\n", sigma_est_str, sigsav, thesav, tol, sigma, theta); } END: if (x) NAG_FREE(x); if (rs) NAG_FREE(rs); if (sorted_x) NAG_FREE(sorted_x); return exit_status; }