mirror of https://github.com/ecmwf/eccodes.git
71 lines
2.1 KiB
Fortran
71 lines
2.1 KiB
Fortran
! (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 (e.g., grib_ls etc) multi support is ON.
|
|
!
|
|
!
|
|
program multi
|
|
use eccodes
|
|
implicit none
|
|
|
|
integer :: iret
|
|
integer(kind=4) :: parameterCategory, parameterNumber, discipline
|
|
integer :: ifile, igrib, counter
|
|
|
|
call codes_open_file(ifile, '../../data/multi.grib2', 'r')
|
|
|
|
! Turn off support for multi-field messages
|
|
call codes_grib_multi_support_off()
|
|
|
|
! Turn on support for multi-field messages
|
|
call codes_grib_multi_support_on()
|
|
|
|
call codes_grib_new_from_file(ifile, igrib)
|
|
! Loop on all the messages in a file.
|
|
|
|
do while (igrib .ne. -1)
|
|
|
|
counter = counter + 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 -------"
|
|
end if
|
|
if (parameterNumber .eq. 3) then
|
|
write (*, *) "-------- v -------"
|
|
end if
|
|
end if
|
|
|
|
call codes_release(igrib)
|
|
call codes_grib_new_from_file(ifile, igrib, iret)
|
|
|
|
end do
|
|
call codes_close_file(ifile)
|
|
|
|
write(*,*) 'Message count =',counter
|
|
|
|
end program multi
|