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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 get lat/lon/values.
!
!
program get_data
use eccodes
implicit none
integer :: ifile
integer :: iret, i
real(kind=8), dimension(:), allocatable :: lats, lons, values
integer, dimension(:), allocatable :: bitmap
integer(4) :: numberOfPoints
logical :: is_missing_value
integer :: count1 = 0, count2 = 0, bitmapPresent = 0, bmp_len = 0
integer :: igrib ! message identifier
ifile = 5
call codes_open_file(ifile, '../../data/reduced_latlon_surface.grib1', 'r')
! loop on all the messages in the file
do while (.true.)
call codes_grib_new_from_file(ifile, igrib, iret)
if (iret == CODES_END_OF_FILE) exit
count1 = count1 + 1
print *, "===== Message #", count1
call codes_get(igrib, 'numberOfPoints', numberOfPoints)
call codes_get(igrib, 'bitmapPresent', bitmapPresent)
allocate (lats(numberOfPoints))
allocate (lons(numberOfPoints))
allocate (values(numberOfPoints))
if (bitmapPresent == 1) then
! get the bitmap
call codes_get_size(igrib, 'bitmap', bmp_len)
allocate (bitmap(bmp_len))
call codes_get(igrib, 'bitmap', bitmap)
end if
call codes_grib_get_data(igrib, lats, lons, values)
do i = 1, numberOfPoints
! consult bitmap to see if the i'th value is missing
is_missing_value = .false.
if (bitmapPresent == 1 .and. bitmap(i) == 0) then
is_missing_value = .true.
end if
! only print non-missing values
if (.not. is_missing_value) then
print *, lats(i), lons(i), values(i)
count2 = count2 + 1
end if
end do
print *, 'count of non-missing values=', count2
if (count2 /= 214661) then
call codes_check(-2, 'incorrect number of missing', '')
end if
deallocate (lats)
deallocate (lons)
deallocate (values)
call codes_release(igrib)
end do
call codes_close_file(ifile)
end program
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