mirror of https://github.com/ecmwf/eccodes.git
76 lines
2.3 KiB
Fortran
76 lines
2.3 KiB
Fortran
! (C) Copyright 2005- ECMWF.
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!
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! This software is licensed under the terms of the Apache Licence Version 2.0
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! which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
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!
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! In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
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! virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
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!
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!
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! Description: how to read data values from a given subset of a BUFR message.
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!
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!
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program bufr_subset
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use eccodes
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implicit none
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integer :: ifile
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integer :: iret
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integer :: ibufr
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integer :: i, count = 0
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integer(kind=4) :: numberOfSubsets
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integer(kind=4) :: blockNumber, stationNumber
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character(100) :: key
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!real(kind=8) :: t2m
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call codes_open_file(ifile, '../../data/bufr/synop_multi_subset.bufr', 'r')
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! The first BUFR message is loaded from file,
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! ibufr is the BUFR id to be used in subsequent calls
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call codes_bufr_new_from_file(ifile, ibufr, iret)
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do while (iret /= CODES_END_OF_FILE)
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! Get and print some keys from the BUFR header
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write (*, *) 'message: ', count
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! We need to instruct ecCodes to expand all the descriptors
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! i.e. unpack the data values
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call codes_set(ibufr, 'unpack', 1);
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! Find out the number of subsets
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call codes_get(ibufr, 'numberOfSubsets', numberOfSubsets)
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write (*, *) ' numberOfSubsets:', numberOfSubsets
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! Loop over the subsets
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do i = 1, numberOfSubsets
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100 format('/subsetNumber=', I5.5, '/blockNumber')
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write (key, 100) I
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write (*, *) key
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write (*, *) ' subsetNumber:', i
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! read and print some data values
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call codes_get(ibufr, key, blockNumber);
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write (*, *) ' blockNumber:', blockNumber
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write (key, *) '/subsetNumber=', I, '/stationNumber'
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call codes_get(ibufr, 'stationNumber', stationNumber);
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write (*, *) ' stationNumber:', stationNumber
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end do
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! Release the BUFR message
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call codes_release(ibufr)
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! Load the next BUFR message
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call codes_bufr_new_from_file(ifile, ibufr, iret)
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count = count + 1
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end do
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! Close file
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call codes_close_file(ifile)
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end program bufr_subset
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