mirror of https://github.com/ecmwf/eccodes.git
49 lines
1.6 KiB
Fortran
49 lines
1.6 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 create a multi-field message in memory and write
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! it to a file. The multi-field messages can be created
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! only in GRIB edition 2.
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!
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!
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!
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program grib2_multi_write
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use eccodes
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implicit none
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integer :: infile, outfile
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integer :: in_gribid
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integer :: multi_gribid
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integer :: step, startsection
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! Multi-field messages can be created only in edition 2
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call codes_open_file(infile, '../../data/sample.grib2', 'r')
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call codes_open_file(outfile, 'multi_created.grib2', 'w')
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! A GRIB message is loaded from file
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! in_gribid is the GRIB id to be used in subsequent calls
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call codes_grib_new_from_file(infile, in_gribid)
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startsection = 4
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do step = 0, 240, 12
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call codes_set(in_gribid, "step", step)
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call codes_grib_multi_append(in_gribid, startsection, multi_gribid)
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end do
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! Write messages to a file
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call codes_grib_multi_write(multi_gribid, outfile)
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call codes_release(in_gribid)
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call codes_release(multi_gribid)
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call codes_close_file(infile)
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call codes_close_file(outfile)
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end program grib2_multi_write
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