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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.
!
!
! Description: how to read data values from a given subset of a BUFR message.
!
!
program bufr_subset
use eccodes
implicit none
integer :: ifile
integer :: iret
integer :: ibufr
integer :: i, count = 0
integer(kind=4) :: numberOfSubsets
integer(kind=4) :: blockNumber, stationNumber
character(100) :: key
!real(kind=8) :: t2m
call codes_open_file(ifile, '../../data/bufr/synop_multi_subset.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 from 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);
! Find out the number of subsets
call codes_get(ibufr, 'numberOfSubsets', numberOfSubsets)
write (*, *) ' numberOfSubsets:', numberOfSubsets
! Loop over the subsets
do i = 1, numberOfSubsets
100 format('/subsetNumber=', I5.5, '/blockNumber')
write (key, 100) I
write (*, *) key
write (*, *) ' subsetNumber:', i
! read and print some data values
call codes_get(ibufr, key, blockNumber);
write (*, *) ' blockNumber:', blockNumber
write (key, *) '/subsetNumber=', I, '/stationNumber'
call codes_get(ibufr, 'stationNumber', stationNumber);
write (*, *) ' stationNumber:', stationNumber
end do
! Release the BUFR message
call codes_release(ibufr)
! Load the next BUFR message
call codes_bufr_new_from_file(ifile, ibufr, iret)
count = count + 1
end do
! Close file
call codes_close_file(ifile)
end program bufr_subset
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