mirror of https://github.com/ecmwf/eccodes.git
116 lines
3.9 KiB
Fortran
116 lines
3.9 KiB
Fortran
!
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! Description: how to get values using keys.
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!
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!
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! Copyright: See COPYING file that comes with this distribution
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!
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!
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program get
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use eccodes
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implicit none
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integer :: ifile
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integer :: iret
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integer :: igrib
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integer :: i
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real(kind=8) :: latitudeOfFirstPointInDegrees
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real(kind=8) :: longitudeOfFirstPointInDegrees
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real(kind=8) :: latitudeOfLastPointInDegrees
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real(kind=8) :: longitudeOfLastPointInDegrees
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real(kind=8) :: jDirectionIncrementInDegrees
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real(kind=8) :: iDirectionIncrementInDegrees
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integer(kind = 4) :: numberOfPointsAlongAParallel
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integer(kind = 4) :: numberOfPointsAlongAMeridian
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real(kind=8), dimension(:), allocatable :: values
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integer(kind = 4) :: numberOfValues
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real(kind=8) :: average
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character(len = 256) :: error
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call codes_open_file(ifile, &
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'../../data/reduced_latlon_surface.grib1','r')
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! a new grib message is loaded from file
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! igrib is the grib id to be used in subsequent calls
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call codes_grib_new_from_file(ifile,igrib)
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! get as a integer
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call codes_get(igrib,'numberOfPointsAlongAParallel', &
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numberOfPointsAlongAParallel)
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write(*,*) 'numberOfPointsAlongAParallel=', &
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numberOfPointsAlongAParallel
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! get as a integer
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call codes_get(igrib,'numberOfPointsAlongAMeridian', &
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numberOfPointsAlongAMeridian)
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write(*,*) 'numberOfPointsAlongAMeridian=', &
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numberOfPointsAlongAMeridian
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! get as a real8
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call codes_get(igrib, &
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'latitudeOfFirstGridPointInDegrees', &
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latitudeOfFirstPointInDegrees)
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write(*,*) 'latitudeOfFirstGridPointInDegrees=', &
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latitudeOfFirstPointInDegrees
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! get as a real8
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call codes_get(igrib, &
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'longitudeOfFirstGridPointInDegrees', &
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longitudeOfFirstPointInDegrees)
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write(*,*) 'longitudeOfFirstGridPointInDegrees=', &
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longitudeOfFirstPointInDegrees
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! get as a real8
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call codes_get(igrib, &
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'latitudeOfLastGridPointInDegrees', &
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latitudeOfLastPointInDegrees)
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write(*,*) 'latitudeOfLastGridPointInDegrees=', &
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latitudeOfLastPointInDegrees
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! get as a real8
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call codes_get(igrib, &
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'longitudeOfLastGridPointInDegrees', &
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longitudeOfLastPointInDegrees)
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write(*,*) 'longitudeOfLastGridPointInDegrees=', &
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longitudeOfLastPointInDegrees
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! get as a real8
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call codes_get(igrib, &
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'jDirectionIncrementInDegrees', &
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jDirectionIncrementInDegrees)
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write(*,*) 'jDirectionIncrementInDegrees=', &
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jDirectionIncrementInDegrees
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! get as a real8
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call codes_get(igrib, &
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'iDirectionIncrementInDegrees', &
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iDirectionIncrementInDegrees)
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write(*,*) 'iDirectionIncrementInDegrees=', &
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iDirectionIncrementInDegrees
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! get the size of the values array
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call codes_get_size(igrib,'values',numberOfValues)
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write(*,*) 'numberOfValues=',numberOfValues
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allocate(values(2*numberOfValues), stat=iret)
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! get data values
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print*, size(values)
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call codes_get(igrib,'values',values)
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average = 0
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do i=1,numberOfValues
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average = average + values(i);
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enddo
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average =average / numberOfValues
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write(*,*)'There are ',numberOfValues, &
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' average is ',average
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call codes_release(igrib)
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call codes_close_file(ifile)
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deallocate(values)
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end program get
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