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<title>grib_api: get_data.f90</title>
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<h1>get_data.f90</h1>How to get latitude/longitude/values.<p>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 ! Copyright 2005-2015 ECMWF
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<a name="l00002"></a>00002 ! This software is licensed under the terms of the Apache Licence Version 2.0
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<a name="l00003"></a>00003 ! which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
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<a name="l00004"></a>00004 !
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<a name="l00005"></a>00005 ! In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
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<a name="l00006"></a>00006 ! virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
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<a name="l00007"></a>00007 !
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<a name="l00008"></a>00008 !
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<a name="l00009"></a>00009 ! Description: how to <span class="keyword">get</span> lat/lon/values.
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<a name="l00010"></a>00010 !
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<a name="l00011"></a>00011 !
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<a name="l00012"></a>00012 ! Author: Enrico Fucile
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<a name="l00013"></a>00013 !
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<a name="l00014"></a>00014 !
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<a name="l00015"></a>00015 program get_data
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<a name="l00016"></a>00016 use grib_api
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<a name="l00017"></a>00017 implicit none
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<a name="l00018"></a>00018 integer :: ifile
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<a name="l00019"></a>00019 integer :: iret,i
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<a name="l00020"></a>00020 real(kind=8),dimension(:),allocatable :: lats,lons,values
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<a name="l00021"></a>00021 integer(4) :: numberOfPoints
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<a name="l00022"></a>00022 real(8) :: missingValue=9999
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<a name="l00023"></a>00023 integer :: count=0
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<a name="l00024"></a>00024 character(len=256) :: filename
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<a name="l00025"></a>00025
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<a name="l00026"></a>00026 ! Message identifier.
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<a name="l00027"></a>00027 integer :: igrib
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<a name="l00028"></a>00028
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<a name="l00029"></a>00029 ifile=5
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<a name="l00030"></a>00030
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<a name="l00031"></a>00031 call grib_open_file(ifile, &
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<a name="l00032"></a>00032 '../../data/reduced_latlon_surface.grib1','R')
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<a name="l00033"></a>00033
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<a name="l00034"></a>00034 ! Loop on all the messages in a file.
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<a name="l00035"></a>00035
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<a name="l00036"></a>00036 call grib_new_from_file(ifile,igrib,iret)
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<a name="l00037"></a>00037
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<a name="l00038"></a>00038 do while (iret/=<a name="a0"></a><a class="code" href="grib__api_8h.html#3bd3d72fe8bc116ca08c2d4b99203768" title="End of ressource reached.">GRIB_END_OF_FILE</a>)
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<a name="l00039"></a>00039 count=count+1
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<a name="l00040"></a>00040 print *, <span class="stringliteral">"===== Message #"</span>,count
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<a name="l00041"></a>00041 call grib_get(igrib,'numberOfPoints',numberOfPoints)
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<a name="l00042"></a>00042 call grib_set(igrib,'missingValue',missingValue)
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<a name="l00043"></a>00043
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<a name="l00044"></a>00044 allocate(lats(numberOfPoints))
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<a name="l00045"></a>00045 allocate(lons(numberOfPoints))
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<a name="l00046"></a>00046 allocate(values(numberOfPoints))
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<a name="l00047"></a>00047
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<a name="l00048"></a>00048 call grib_get_data(igrib,lats,lons,values)
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<a name="l00049"></a>00049
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<a name="l00050"></a>00050 do i=1,numberOfPoints
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<a name="l00051"></a>00051 if (values(i) /= missingValue) then
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<a name="l00052"></a>00052 print *, lats(i),lons(i),values(i)
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<a name="l00053"></a>00053 end if
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<a name="l00054"></a>00054 enddo
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<a name="l00055"></a>00055
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<a name="l00056"></a>00056 deallocate(lats)
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<a name="l00057"></a>00057 deallocate(lons)
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<a name="l00058"></a>00058 deallocate(values)
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<a name="l00059"></a>00059
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<a name="l00060"></a>00060 call grib_release(igrib)
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<a name="l00061"></a>00061 call grib_new_from_file(ifile,igrib, iret)
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<a name="l00062"></a>00062
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<a name="l00063"></a>00063 end do
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<a name="l00064"></a>00064
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<a name="l00065"></a>00065
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<a name="l00066"></a>00066 call grib_close_file(ifile)
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<a name="l00067"></a>00067
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<a name="l00068"></a>00068 end program
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</pre></div> <hr size="1"><address style="text-align: right;"><small>Generated on Tue Sep 22 15:18:21 2009 for grib_api by
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.3 </small></address>
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