example_vg6d_2.f90

Programma esempio semplice per la lettura di file grib.

Programma esempio semplice per la lettura di file grib. Programma che legge i grib contenuti in un file e li organizza in un vettore di oggetti gridinfo

! Copyright (C) 2010  ARPA-SIM <urpsim@smr.arpa.emr.it>
! authors:
! Davide Cesari <dcesari@arpa.emr.it>
! Paolo Patruno <ppatruno@arpa.emr.it>
 
! This program is free software; you can redistribute it and/or
! modify it under the terms of the GNU General Public License as
! published by the Free Software Foundation; either version 2 of 
! the License, or (at your option) any later version.
 
! This program is distributed in the hope that it will be useful,
! but WITHOUT ANY WARRANTY; without even the implied warranty of
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
! GNU General Public License for more details.
 
! You should have received a copy of the GNU General Public License
! along with this program.  If not, see <http://www.gnu.org/licenses/>.
program demo2
 
use gridinfo_class
use char_utilities
use log4fortran
use grid_id_class
 
implicit none
 
integer :: ier
type(l4f_handle) :: category
character(len=512):: a_name
type(arrayof_gridinfo) :: gridinfo
 
TYPE(grid_file_id) :: ifile
TYPE(grid_id) :: gaid
INTEGER :: ngrib
 
!questa chiamata prende dal launcher il nome univoco
call l4f_launcher(a_name,a_name_force="demo2")
 
!imposta a_name
category=l4f_category_get_handle(a_name//".main")
 
!init di log4fortran
ier=l4f_init()
 
 
ngrib=0
 
ifile = grid_file_id_new('../data/in.grb','r')
! Loop on all the messages in a file.
DO WHILE (.true.)
  gaid = grid_id_new(ifile)
  IF (.NOT.c_e(gaid)) EXIT
 
  ngrib = ngrib + 1
  CALL delete(gaid)
ENDDO
 
CALL delete(ifile)
 
CALL l4f_category_log(category,l4f_info,&
 "Numero totale di grib: "//to_char(ngrib))
 
! aggiungo ngrib elementi vuoti
CALL insert(gridinfo, nelem=ngrib)
 
ngrib=0
 
ifile = grid_file_id_new('../data/in.grb','r')
! Loop on all the messages in a file.
DO WHILE (.true.)
  gaid = grid_id_new(ifile)
  IF (.NOT.c_e(gaid)) EXIT
 
  CALL l4f_category_log(category,l4f_info,"import grib")
  ngrib = ngrib + 1
  CALL init (gridinfo%array(ngrib), gaid=gaid)
  CALL import(gridinfo%array(ngrib))
ENDDO
 
call delete(ifile)
call display(gridinfo)
 
CALL delete(gridinfo)
 
call l4f_category_log(category,l4f_info,"terminato ")
 
!chiudo il logger
call l4f_category_delete(category)
ier=l4f_fini()
 
end program demo2