mirror of https://github.com/ecmwf/eccodes.git
52 lines
1.6 KiB
Fortran
52 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 set missing a key value.
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!
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!
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!
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program set_missing
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use eccodes
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implicit none
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integer :: infile, outfile
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integer :: igrib, Ni, is_missing
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infile = 5
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outfile = 6
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call codes_open_file(infile, &
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'../../data/reduced_gaussian_pressure_level.grib2', 'r')
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call codes_open_file(outfile, &
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'f_out_surface_level.grib2', 'w')
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! a new grib message is loaded from file
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! igrib is the grib id to be used in subsequent calls
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call codes_grib_new_from_file(infile, igrib)
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call codes_set(igrib, 'typeOfFirstFixedSurface', 'sfc')
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call codes_set_missing(igrib, 'scaleFactorOfFirstFixedSurface')
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call codes_set_missing(igrib, 'scaledValueOfFirstFixedSurface')
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! see GRIB-490
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call codes_get(igrib, 'Ni', Ni)
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call codes_is_missing(igrib, 'Ni', is_missing)
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if (is_missing == 0) then
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! Ni should be missing in gribs with Reduced Gaussian grids
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call codes_check(-2, 'Ni_should_be_missing', '')
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end if
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call codes_set(igrib, 'Ni', Ni)
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call codes_write(igrib, outfile)
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call codes_release(igrib)
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call codes_close_file(infile)
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call codes_close_file(outfile)
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end program
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