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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 decode GRIB messages containing multiple
! fields. Try to turn on and off multi support to
! see the difference. Default is OFF.
! For all the tools default is multi support ON.
!
!
program multi
use eccodes
implicit none
integer :: iret
integer(kind = 4) :: parameterCategory,parameterNumber,discipline
integer :: ifile,igrib
call codes_open_file(ifile, '../../data/multi.grib2','r')
! turn on support for multi fields messages */
call codes_grib_multi_support_on()
! turn off support for multi fields messages */
!call codes_grib_multi_support_off()
call codes_grib_new_from_file(ifile,igrib)
! Loop on all the messages in a file.
do while (igrib .ne. -1)
! get as a integer*4
call codes_get(igrib,'discipline',discipline)
write(*,*) 'discipline=',discipline
! get as a integer*4
call codes_get(igrib,'parameterCategory', &
parameterCategory)
write(*,*) 'parameterCategory=',parameterCategory
! get as a integer*4
call codes_get(igrib,'parameterNumber', &
parameterNumber)
write(*,*) 'parameterNumber=',parameterNumber
if ( discipline .eq. 0 .and. parameterCategory .eq. 2) then
if (parameterNumber .eq. 2) then
write(*,*) "-------- u -------"
endif
if (parameterNumber .eq. 3) then
write(*,*) "-------- v -------"
endif
endif
call codes_release(igrib)
call codes_grib_new_from_file(ifile,igrib, iret)
end do
call codes_close_file(ifile)
end program multi
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