1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
! (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 create a multi field message in memory and write
! it in a file. The multi field messages can be created
! only in GRIB edition 2.
!
!
!
program grib2_multi_write
use eccodes
implicit none
integer :: infile,outfile
integer :: in_gribid
integer :: multi_gribid
integer :: step,startsection
! multi field messages can be created only in edition 2
call codes_open_file(infile,'../../data/sample.grib2','r')
call codes_open_file(outfile,'multi_created.grib2','w')
! a grib message is loaded from file
! in_gribid is the grib id to be used in subsequent calls
call codes_grib_new_from_file(infile,in_gribid)
startsection=4
do step=0,240,12
call codes_set(in_gribid,"step",step)
call codes_grib_multi_append(in_gribid,startsection,multi_gribid)
enddo
! write messages to a file
call codes_grib_multi_write(multi_gribid,outfile)
call codes_release(in_gribid)
call codes_release(multi_gribid)
call codes_close_file(infile)
call codes_close_file(outfile)
end program grib2_multi_write
|
