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Description

This example shows: how to read all the

...

expanded data values from BUFR messages.

Source code

Tabs Container
directionhorizontal


Tabs Page
titleCFortran 90


Code Block
languagecppnone
titlebufr_expanded.cf90
linenumbersfalse
/*!
! *(C) 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.
 */!
!
/*
! *FORTRAN C90 Implementation: bufr_expanded
 *!
 *! Description: how to read all the exapandedexpanded 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)

    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 expanded data values
    call codes_get(ibufr,'numericValues',values)

    numberOfValues=size(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



Tabs Page
titlePython


Code Block
languagepython
titlebufr_expanded.py
linenumbersfalse
# 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.

#
# Python implementation: bufr_get_keys
#
# Description: how to read values of different type of keys from BUFR messages.
#
#

from __future__ import absolute_import

import sys
import traceback

from eccodes import *

INPUT = '../../data/bufr/syno_1.bufr'
VERBOSE = 1  # verbose error reporting


def example():
    # open bufr file
    f = open(INPUT, 'rb')

    cnt = 0

    # loop for the messages in the file
    while 1:
        # get handle for message
        bufr = codes_bufr_new_from_file(f)*
 */

#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;
    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);
        if bufr   cnt++;is None:
            continue;break

        }print("message: %s" % cnt)

        /*# we need to instruct ecCodes to expand all the descriptors
        # i.e. unpack the data values */
        CODES_CHECK(codes_set_long(hbufr," 'unpack"', 1),0);


        # ----------------------------------
        /*# get all the sizeexpanded ofdata the values
 array*/
        CODES_CHECK(codes_get_size(h,"numericValues",&values_len),0);# ----------------------------------
    
    key = 'numericValues'

  /*   allocate array for data# valuesget */size
        valuesnum = malloc(values_len*sizeof(double));codes_get_size(bufr, key)
      
     print('  size of %s is: %s' % (key, num))

     /* get the exapanded# dataget values*/
        CODES_CHECK(values = codes_get_double_array(h,"numericValues",values,&values_len),0);
 
bufr, key)
         for(i = 0; i <in values_len; i++)range(len(values)):
        {
    print("   %d %.10e" % (i  printf("%.10e\n",+ 1, values[i]);)

        cnt += }1

        # delete handle
        freecodes_release(values);bufr)

    # close the file
    f.close()


def main():
    try:
        /* delete handle */example()
    except CodesInternalError as err:
        codes_handle_delete(h);
if VERBOSE:
            traceback.print_exc(file=sys.stderr)
        cnt++;else:
    }
    
    fclose(in);sys.stderr.write(err.msg + '\n')

    return 0;
}    return 1


if __name__ == "__main__":
    sys.exit(main())



Python
Tabs Page
titleFortran 90C


Code Block
languagenonecpp
titlebufr_expanded.f90c
linenumbersfalse
!
!/*
 * 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 */

/*
 * C Implementation: bufr_expanded
! *
! * Description: how to read all the exapandedexpanded data values from BUFR messages.
!
!
program bufr_expanded
use eccodes
implicit none
integer *
 */

#include "eccodes.h"

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

int  :: ifile
integermain(int argc,char* argv[])
{
    char* filename = NULL;
    FILE* in :: iret
integer            :: ibufr
integer     = NULL;

    /* message handle. Required in all the ecCodes calls acting on a message.*/
    codes_handle* h=NULL;

    double *values  :: i
integer= NULL;
    size_t values_len=0;
    int i, err=0;
    ::int countcnt=0
integer(kind=4)    :: numberOfValues 
real(kind=8), dimension(:), allocatable;

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

    filename=argv[1];

    /* open bufr file */
    in=fopen(filename,"rb");
    if (!in) {
        printf("ERROR:: values

unable to callopen 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_bufrfile %s\n", filename);
        return 1;
    }

    /* loop over the messages in the bufr file */
    while ((h = codes_handle_new_from_file(ifile,ibufr,iret)

  do while (iret/=CODES_END_OF_FILENULL, in, PRODUCT_BUFR, &err)) != NULL || err != CODES_SUCCESS)
    {
    ! get and print some keys form the BUFR header 
    if (h == NULL) {
            write(*,*) 'message: ',count

printf("Error: unable to create handle for message %d\n",cnt);
    ! we need to instruct ecCodes to expand allcnt++;
 the descriptors 
    ! i.e. unpack the data valuescontinue;
    call codes_set(ibufr,"unpack",1);    }

    
    !/* get the size of the values array*/
    call     CODES_CHECK(codes_get_size(ibufrh, "numericValues",numberOfValues) &values_len),0);
    
    print*, 'printf("  number of exapandedexpanded values:' %lu\n", numberOfValuesvalues_len);

    
    !/* allocate array for data values */
    allocate    values = (double*)malloc(values_len*sizeof(numberOfValuesdouble), stat=iret);

   
     !/* get the exapandedexpanded data values*/
    call grib_get(ibufr,'numericValues',values)
     CODES_CHECK(codes_get_double_array(h, "numericValues", values, &values_len),0);

    do i=1,numberOfValues
   for(i = 0; i  write(*,*) '  ',i,values(i)
< values_len; i++)
        enddo{

     ! release the bufr message
   printf(" call codes_release(ibufr)

 %.10e\n",values[i]);
      ! load the}

 next bufr message
    call codes_bufr_new_from_file(ifile,ibufr,iret)
     free(values);

    ! free array 
 /* delete  deallocate(values)handle */
        codes_handle_delete(h);

    count=count+1
    cnt++;
  end do  }

! close file  fclose(in);
  call codes_close_file(ifile)
 

end program bufr_expanded
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title
  return 0;
}