bufr_expanded

/*
 * Copyright 2005-2015 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: bufr_expanded
 *
 * Description: how to read all the exapanded data values from BUFR messages.
 *
 */

#include "eccodes.h"

void usage(char* prog) {
    printf("usage: %s infile\n",prog);
    exit(1);
}

int main(int argc,char* argv[])
{
    char* filename = NULL;
    FILE* in = NULL;
    
    /* message handle. Required in all the eccodes calls acting on a message.*/
    codes_handle* h=NULL;
    
    double *values = NULL;
    long longVal;
    double doubleVal;
    size_t values_len=0;
    int i, err=0;
    int cnt=0;

    if (argc!=2) usage(argv[0]);
    
    filename=argv[1];

    in=fopen(filename,"r");
    if (!in) {
        printf("ERROR: unable to open file %s\n", filename);
        return 1;
    }
    
    /* loop over the messages in the bufr file */
    while ((h = bufr_new_from_file(NULL,in,&err)) != NULL || err != CODES_SUCCESS)
    {
        if (h == NULL) {
            printf("Error: unable to create handle for message %d\n",cnt);
            cnt++;
            continue;
        }

        /* we need to instruct ecCodes to unpack the data values */
        CODES_CHECK(codes_set_long(h,"unpack",1),0);
    
        /* get the size of the values array*/
        CODES_CHECK(codes_get_size(h,"numericValues",&values_len),0);
    
        /* allocate array for data values */
        values = malloc(values_len*sizeof(double));
      
        /* get the exapanded data values*/
        CODES_CHECK(codes_get_double_array(h,"numericValues",values,&values_len),0);
 
        for(i = 0; i < values_len; i++)
        {
            printf("%.10e\n",values[i]);
        }
        
        free(values);
        
        /* delete handle */
        codes_handle_delete(h);
        
        cnt++;
    }
    
    fclose(in);
    return 0;
}

!
!Copyright 2005-2015 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.
!
!
! FOTRAN 90 Implementation: bufr_expanded
!
! Description: how to read all the exapanded data values from BUFR messages.
!
!
program bufr_expanded
use eccodes
implicit none
integer            :: ifile
integer            :: iret
integer            :: ibufr
integer            :: i
integer            :: count=0
integer(kind=4)    :: numberOfValues 
real(kind=8), dimension(:), allocatable       :: values

  call codes_open_file(ifile,'../../data/bufr/syno_1.bufr','r')

! the first bufr message is loaded from file
! ibufr is the bufr id to be used in subsequent calls
  call codes_bufr_new_from_file(ifile,ibufr,iret)

  do while (iret/=CODES_END_OF_FILE)
    
    ! get and print some keys form the BUFR header 
    write(*,*) 'message: ',count

    ! we need to instruct ecCodes to expand all the descriptors 
    ! i.e. unpack the data values
    call codes_set(ibufr,"unpack",1);
    
    ! get the size of the values array
    call codes_get_size(ibufr,"numericValues",numberOfValues)
    
    print*, '  number of exapanded values:', numberOfValues
    
    ! allocate array for data values
    allocate(values(numberOfValues), stat=iret)
 
    ! get the exapanded data values
    call grib_get(ibufr,'numericValues',values)
 
    do i=1,numberOfValues
        write(*,*) '  ',i,values(i)
    enddo

    ! release the bufr message
    call codes_release(ibufr)

    ! load the next bufr message
    call codes_bufr_new_from_file(ifile,ibufr,iret)
    
    ! free array 
    deallocate(values)
        
    count=count+1
    
  end do  

! close file  
  call codes_close_file(ifile)
 

end program bufr_expanded