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/*
* (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 <stdio.h>
#include <stdlib.h>
#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;
}
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