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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 values using keys.
!
!
program get
use eccodes
implicit none
integer :: ifile
integer :: iret
integer :: igrib
integer :: i
real(kind=8) :: latitudeOfFirstPointInDegrees
real(kind=8) :: longitudeOfFirstPointInDegrees
real(kind=8) :: latitudeOfLastPointInDegrees
real(kind=8) :: longitudeOfLastPointInDegrees
real(kind=8) :: jDirectionIncrementInDegrees
real(kind=8) :: iDirectionIncrementInDegrees
integer(kind=4) :: numberOfPointsAlongAParallel
integer(kind=4) :: numberOfPointsAlongAMeridian
real(kind=8), dimension(:), allocatable :: values
integer(kind=4) :: numberOfValues
real(kind=8) :: average
call codes_open_file(ifile, &
'../../data/reduced_latlon_surface.grib1', 'r')
! A new grib message is loaded from file
! igrib is the grib id to be used in subsequent calls
call codes_grib_new_from_file(ifile, igrib)
! get as a integer
call codes_get(igrib, 'numberOfPointsAlongAParallel', &
numberOfPointsAlongAParallel)
write (*, *) 'numberOfPointsAlongAParallel=', &
numberOfPointsAlongAParallel
! get as a integer
call codes_get(igrib, 'numberOfPointsAlongAMeridian', &
numberOfPointsAlongAMeridian)
write (*, *) 'numberOfPointsAlongAMeridian=', &
numberOfPointsAlongAMeridian
! get as a real8
call codes_get(igrib, &
'latitudeOfFirstGridPointInDegrees', &
latitudeOfFirstPointInDegrees)
write (*, *) 'latitudeOfFirstGridPointInDegrees=', &
latitudeOfFirstPointInDegrees
! get as a real8
call codes_get(igrib, &
'longitudeOfFirstGridPointInDegrees', &
longitudeOfFirstPointInDegrees)
write (*, *) 'longitudeOfFirstGridPointInDegrees=', &
longitudeOfFirstPointInDegrees
! get as a real8
call codes_get(igrib, &
'latitudeOfLastGridPointInDegrees', &
latitudeOfLastPointInDegrees)
write (*, *) 'latitudeOfLastGridPointInDegrees=', &
latitudeOfLastPointInDegrees
! get as a real8
call codes_get(igrib, &
'longitudeOfLastGridPointInDegrees', &
longitudeOfLastPointInDegrees)
write (*, *) 'longitudeOfLastGridPointInDegrees=', &
longitudeOfLastPointInDegrees
! get as a real8
call codes_get(igrib, &
'jDirectionIncrementInDegrees', &
jDirectionIncrementInDegrees)
write (*, *) 'jDirectionIncrementInDegrees=', &
jDirectionIncrementInDegrees
! get as a real8
call codes_get(igrib, &
'iDirectionIncrementInDegrees', &
iDirectionIncrementInDegrees)
write (*, *) 'iDirectionIncrementInDegrees=', &
iDirectionIncrementInDegrees
! get the size of the values array
call codes_get_size(igrib, 'values', numberOfValues)
write (*, *) 'numberOfValues=', numberOfValues
allocate (values(2*numberOfValues), stat=iret)
! get data values
print *, size(values)
call codes_get(igrib, 'values', values)
average = 0
do i = 1, numberOfValues
average = average + values(i);
end do
average = average/numberOfValues
write (*, *) 'There are ', numberOfValues, &
' average is ', average
call codes_release(igrib)
call codes_close_file(ifile)
deallocate (values)
end program get
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