VARIOGRAM *init_variogram(VARIOGRAM *v) {
/*
* initializes one variogram structure
* if v is NULL, memory is allocated for the structure
*/
int i;
if (v == NULL)
v = (VARIOGRAM *) emalloc(sizeof(VARIOGRAM));
v->id = v->id1 = v->id2 = -1;
v->n_models = 0;
v->is_valid_covariance = 1;
v->isotropic = 1;
v->n_fit = 0;
v->fit_is_singular = 0;
v->max_range = (double) DBL_MIN;
v->sum_sills = 0.0;
v->measurement_error = 0.0;
v->max_val = 0.0;
v->min_val = 0.0;
vgm_init_block_values(v);
v->part = (VGM_MODEL *) emalloc(INIT_N_VGMM * sizeof(VGM_MODEL));
v->table = NULL;
for (i = 0; i < INIT_N_VGMM; i++)
init_variogram_part(&(v->part[i]));
v->max_n_models = INIT_N_VGMM;
v->SSErr = 0.0;
v->ev = init_ev();
return v;
}
int ossfim(int argc, char *argv[]) {
int c, n = 25, dx = 9, dy = 9, i, j, plot_vgm = 0;
double b = 1, B = 10, s = 1, S = 10, blocksize, samplespacing, est[2],
**table;
DATA **d = NULL;
DPOINT *block = NULL, where;
char *vgm_str = "1Exp(10)", *map_name = NULL;
VARIOGRAM *vgm;
while ((c = getopt(argc, argv, "n:m:B:b:S:s:V:v:x:y:")) != EOF) {
switch (c) {
case 'n':
if (read_int(optarg, &n) || n <= 0)
ErrMsg(ER_ARGOPT, "n");
break;
case 'b':
if (read_double(optarg, &b) || b < 0)
ErrMsg(ER_ARGOPT, "b");
break;
case 'B':
if (read_double(optarg, &B) || B <= 0)
ErrMsg(ER_ARGOPT, "B");
break;
case 's':
if (read_double(optarg, &s) || s <= 0)
ErrMsg(ER_ARGOPT, "s");
break;
case 'S':
if (read_double(optarg, &S) || S <= 0)
ErrMsg(ER_ARGOPT, "S");
break;
case 'x':
if (read_int(optarg, &dx) || dx <= 0)
ErrMsg(ER_ARGOPT, "x");
break;
case 'y':
if (read_int(optarg, &dy) || dy <= 0)
ErrMsg(ER_ARGOPT, "y");
break;
case 'v':
vgm_str = optarg;
break;
case 'V':
plot_vgm = 1;
vgm_str = optarg;
break;
case 'm':
map_name = optarg;
break;
default:
ErrClo(optopt);
break;
}
}
which_identifier("dummy grid");
d = get_gstat_data();
init_one_data(d[0]);
d[0]->id = 0;
d[0]->n_list = d[0]->n_max = 0;
d[0]->mode = X_BIT_SET | Y_BIT_SET | V_BIT_SET;
set_norm_fns(d[0]);
vgm = get_vgm(0);
if (read_variogram(vgm, vgm_str))
ErrMsg(ER_SYNTAX, vgm_str);
vgm->ev->evt = SEMIVARIOGRAM;
vgm->id1 = vgm->id2 = d[0]->id;
block = get_block_p();
block->z = 0.0;
block->x = block->y = -1.0;
est[0] = 0.0;
est[1] = -1.0;
where.x = where.y = where.z = 0.0;
where.X = (double *) emalloc(sizeof(double));
where.X[0] = 1.0;
if (plot_vgm)
return fprint_gnuplot_variogram(stdout, vgm, "", GIF, 0);
table = (double **) emalloc((dy + 1) * sizeof(double *));
for (i = 0; i <= dy; i++)
table[i] = (double *) emalloc((dx + 1) * sizeof(double));
/* do it: */
for (i = 0; i <= dx; i++) { /* sample spacing loop */
samplespacing = s + (i / (1.0 * dx)) * (S - s);
generate_grid(d[0], samplespacing, n);
select_at(d[0], &where);
for (j = 0; j <= dy; j++) { /* block sizes loop */
reset_block_discr();
vgm_init_block_values(vgm);
blocksize = b + (j / (1.0 * dy)) * (B - b);
block->x = block->y = blocksize;
if (blocksize == 0.0)
SET_POINT(&where);
else
SET_BLOCK(&where);
gls(d, 1, GLS_BLUP, &where, est);
if (map_name)
table[i][j] = sqrt(est[1]);
else
printlog("%g %g %g\n", samplespacing, blocksize, sqrt(est[1]));
}
}
if (map_name)
ossfim2map(table, map_name, s, S, b, B, dx, dy);
return 0;
}
