mirror of https://github.com/ecmwf/eccodes.git
65 lines
1.6 KiB
C
65 lines
1.6 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 "eccodes.h"
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int main(int argc, char* argv[])
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{
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FILE* f;
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int err = 0;
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char infile[] = "../../data/reduced_gaussian_model_level.grib1";
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codes_handle* h = NULL;
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codes_box* box;
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codes_points* points;
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codes_context* c = codes_context_get_default();
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double north, west, south, east;
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double* val;
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int i;
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north = 60;
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south = 10;
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west = -10;
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east = 30;
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f = fopen(infile, "rb");
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if (!f) {
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perror(infile);
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exit(1);
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}
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h = codes_handle_new_from_file(c, f, PRODUCT_GRIB, &err);
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if (!h) {
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printf("unable to create handle from file %s\n", infile);
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exit(err);
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}
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box = codes_box_new(h, &err);
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if (!box) {
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printf("unable to create box\n");
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exit(err);
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}
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points = codes_box_get_points(box, north, west, south, east, &err);
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val = (double*)malloc(sizeof(double) * points->n);
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codes_points_get_values(h, points, val);
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for (i = 0; i < points->n; i++) {
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printf("%d -- %.3f %.3f %ld %g\n", i,
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points->latitudes[i], points->longitudes[i], (long)(points->indexes[i]), val[i]);
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}
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free(val);
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fclose(f);
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return 0;
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}
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