mirror of https://github.com/ecmwf/eccodes.git
66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
/*
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* Copyright 2005-2017 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,"r");
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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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