mirror of https://github.com/ecmwf/eccodes.git
85 lines
2.2 KiB
Fortran
85 lines
2.2 KiB
Fortran
! Copyright 2005-2012 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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!
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! Description: how to set key values.
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!
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!
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!
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program set
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use grib_api
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implicit none
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integer(kind = 4) :: centre, date1
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integer :: infile,outfile
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integer :: igrib
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centre = 80
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call current_date(date1)
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call grib_open_file(infile, &
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'../../data/regular_latlon_surface_constant.grib1','r')
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call grib_open_file(outfile, &
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'out.grib1','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 grib_new_from_file(infile,igrib)
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call grib_set(igrib,'dataDate',date1)
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! set centre as a integer */
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call grib_set(igrib,'centre',centre)
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! check if it is correct in the actual GRIB message
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call check_settings(igrib)
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! write modified message to a file
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call grib_write(igrib,outfile)
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call grib_release(igrib)
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call grib_close_file(infile)
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call grib_close_file(outfile)
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contains
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!======================================
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subroutine current_date(date1)
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integer, intent(out) :: date1
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integer :: val_date(8)
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call date_and_time ( values = val_date)
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date1 = val_date(1)* 10000 + val_date(2)*100 + val_date(3)
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end subroutine current_date
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!======================================
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subroutine check_settings(gribid)
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implicit none
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integer, intent(in) :: gribid
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integer(kind = 4) :: int_value
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character(len = 10) :: string_value
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! get centre as a integer
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call grib_get(gribid,'centre',int_value)
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write(*,*) "get centre as a integer - centre = ",int_value
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! get centre as a string
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call grib_get(gribid,'centre',string_value)
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write(*,*) "get centre as a string - centre = ",string_value
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! get date as a string
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call grib_get(gribid,'dataDate',string_value)
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write(*,*) "get date as a string - date = ",string_value
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end subroutine check_settings
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end program set
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