mirror of https://github.com/ecmwf/eccodes.git
148 lines
3.9 KiB
C++
148 lines
3.9 KiB
C++
/*
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* (C) Copyright 2005- ECMWF.
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*
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* This software is licensed under the terms of the Apache Licence Version 2.0
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* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
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*
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* In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
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* virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "grib_api_internal.h"
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static void usage(char* prog)
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{
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printf("Usage: %s latlon_file grib_orography grib_file grib_file ...\n", prog);
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exit(1);
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}
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int main(int argc, char** argv)
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{
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FILE* fin = 0;
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int ret = 0;
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char* fname = 0;
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float lat, lon;
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double *vlat, *vlon;
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long npoints = 0, i = 0, n = 0;
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grib_handle* h;
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double *outlats, *outlons, *values, *lsm_values, *distances;
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size_t* indexes;
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if (argc < 2)
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usage(argv[0]);
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fname = argv[1];
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fin = fopen(fname, "r");
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if (!fin) {
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perror(fname);
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exit(1);
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}
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npoints = 0;
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while (fscanf(fin, "%g %g", &lat, &lon) != EOF)
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npoints++;
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fclose(fin);
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vlat = (double*)malloc(npoints * sizeof(double));
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if (!vlat) {
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printf("unable to allocate %zu bytes\n", npoints * sizeof(double));
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exit(1);
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}
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vlon = (double*)malloc(npoints * sizeof(double));
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if (!vlon) {
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printf("unable to allocate %zu bytes\n", npoints * sizeof(double));
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exit(1);
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}
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outlats = (double*)malloc(npoints * sizeof(double));
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if (!outlats) {
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printf("unable to allocate %zu bytes\n", npoints * sizeof(double));
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exit(1);
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}
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outlons = (double*)malloc(npoints * sizeof(double));
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if (!outlons) {
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printf("unable to allocate %zu bytes\n", npoints * sizeof(double));
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exit(1);
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}
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values = (double*)malloc(npoints * sizeof(double));
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if (!values) {
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printf("unable to allocate %zu bytes\n", npoints * sizeof(double));
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exit(1);
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}
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lsm_values = (double*)malloc(npoints * sizeof(double));
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if (!lsm_values) {
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printf("unable to allocate %zu bytes\n", npoints * sizeof(double));
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exit(1);
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}
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distances = (double*)malloc(npoints * sizeof(double));
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if (!distances) {
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printf("unable to allocate %zu bytes\n", npoints * sizeof(double));
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exit(1);
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}
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indexes = (size_t*)malloc(npoints * sizeof(double));
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if (!indexes) {
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printf("unable to allocate %zu bytes\n", npoints * sizeof(double));
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exit(1);
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}
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fname = argv[1];
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fin = fopen(fname, "r");
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if (!fin) {
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perror(fname);
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exit(1);
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}
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i = 0;
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while (fscanf(fin, "%g %g", &lat, &lon) != EOF) {
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vlat[i] = lat;
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vlon[i] = lon > 0 ? lon : lon + 360;
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i++;
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}
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fclose(fin);
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fname = argv[2];
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fin = fopen(fname, "r");
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if (!fin) {
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perror(fname);
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exit(1);
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}
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h = grib_handle_new_from_file(0, fin, &ret);
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if (!h || ret != GRIB_SUCCESS) {
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printf(" unable to create handle\n");
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exit(1);
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}
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grib_nearest_find_multiple(h, 1, vlat, vlon, npoints,
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outlats, outlons, lsm_values, distances, indexes);
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grib_handle_delete(h);
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fclose(fin);
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for (n = 3; n <= argc - 1; n++) {
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fname = argv[n];
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fin = fopen(fname, "r");
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if (!fin) {
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perror(fname);
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exit(1);
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}
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while ((h = grib_handle_new_from_file(0, fin, &ret)) != NULL) {
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grib_get_double_elements(h, "values", indexes, npoints, values);
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grib_handle_delete(h);
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for (i = 0; i < npoints; i++)
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printf("%g %g %g %g %g %g\n",
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vlat[i], vlon[i],
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outlats[i], outlons[i],
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lsm_values[i], values[i]);
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}
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fclose(fin);
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}
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return ret;
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}
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