/* * (C) Copyright 2005- ECMWF. * * This software is licensed under the terms of the Apache Licence Version 2.0 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. * * In applying this licence, ECMWF does not waive the privileges and immunities granted to it by * virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction. */ /* * C Implementation: grib_print_data * * Description: prints all the data contained in a GRIB file * * */ #include #include #include "grib_api.h" static void usage(char* prog) { printf("usage: %s filename\n",prog); exit(1); } int main(int argc, char** argv) { int err = 0,i; double *values = NULL; double max,min,average; size_t values_len= 0; FILE* in = NULL; char* filename ; grib_handle *h = NULL; if (argc<2) usage(argv[0]); filename=argv[1]; in = fopen(filename,"rb"); if(!in) { printf("ERROR: unable to open file %s\n",filename); return 1; } /* create new handle from a message in a file*/ h = grib_handle_new_from_file(0,in,&err); if (h == NULL) { printf("Error: unable to create handle from file %s\n",filename); } /* get the size of the values array*/ GRIB_CHECK(grib_get_size(h,"values",&values_len),0); values = (double*)malloc(values_len*sizeof(double)); /* get data values*/ GRIB_CHECK(grib_get_double_array(h,"values",values,&values_len),0); for(i = 0; i < values_len; i++) printf("%d %.10e\n",i+1,values[i]); free(values); GRIB_CHECK(grib_get_double(h,"max",&max),0); GRIB_CHECK(grib_get_double(h,"min",&min),0); GRIB_CHECK(grib_get_double(h,"average",&average),0); printf("%d values found in %s\n",(int)values_len,filename); printf("max=%.10e\nmin=%.10e\naverage=%.10e\n",max,min,average); grib_handle_delete(h); fclose(in); return 0; }