Description
This example shows: how to read all the
...
expanded data values from BUFR messages.
Source code
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language | none |
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title | bufr_expanded.f90 |
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linenumbers | false |
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| !
! (C) Copyright 2005-2016 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 90 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')
! theThe 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
! weWe need to instruct ecCodes to expand all the descriptors
! i.e. unpack the data values
call codes_set(ibufr,"unpack",1);
! getGet the exapandedexpanded data values
call codes_get(ibufr,'numericValues',values)
numberOfValues=size(values)
do i=1,numberOfValues
write(*,*) ' ',i,values(i)
enddo
! releaseRelease the bufr message
call codes_release(ibufr)
! loadLoad the next bufr message
call codes_bufr_new_from_file(ifile,ibufr,iret)
! freeFree array
deallocate(values)
count=count+1
end do
! closeClose file
call codes_close_file(ifile)
end program bufr_expanded
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language | python |
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title | bufr_expanded.py |
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linenumbers | false |
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| # Copyright 2005-2016 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 tracebackabsolute_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
gidbufr = codes_bufr_new_from_file(f)
if gidbufr is None:
break
print ("message: %s" % cnt)
# we need to instruct ecCodes to expand all the descriptors
# i.e. unpack the data values
codes_set(gidbufr, 'unpack', 1)
# ----------------------------------
# get all the expanded data values
# ----------------------------------
key = 'numericValues'
# get size
num = codes_get_size(gidbufr, key)
print (' size of %s is: %s' % (key, num))
# get values
values = codes_get_array(gidbufr, key)
for i in xrangerange(len(values)):
print (" %d %.10e" % (i + 1, values[i]))
cnt += 1
# delete handle
codes_release(gidbufr)
# close the file
f.close()
def main():
try:
example()
except CodesInternalError, as err:
if VERBOSE:
traceback.print_exc(file=sys.stderr)
else:
print >>syssys.stderr, .write(err.msg + '\n')
return 1
if __name__ == "__main__":
sys.exit(main())
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language | cpp |
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title | bufr_expanded.c |
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linenumbers | false |
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| /*
* Copyright 2005-2016 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 exapandedexpanded data values from BUFR messages.
*
*/
#include "eccodes.h"
static void usage(const 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];
/* open bufr file */
in=fopen(filename,"rrb");
if (!in) {
printf("ERROR: unable to open file %s\n", filename);
return 1;
}
/* loop over the messages in the bufr file */
while ((h = codes_handle_new_from_file(NULL, in, PRODUCT_BUFR, &err)) != NULL || err != CODES_SUCCESS)
{
if (h == NULL) {
printf("Error: unable to create handle for message %d\n",cnt);
cnt++;
continue;
}
/* get the size of the values array*/
CODES_CHECK(codes_get_size(h, "numericValues", &values_len),0);
printf(" number of expanded values: %ld%lu\n", values_len);
/* allocate array for data values */
values = (double*)malloc(values_len*sizeof(double));
/* get the exapandedexpanded 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;
}
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