1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
C (C) Copyright 2005- ECMWF.
C
C This software is licensed under the terms of the Apache Licence Version 2.0
C which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
C
C In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
C virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
C
C
C Fortran 77 Implementation: get_fortran
C
C Description: how to get values using keys.
C
C
C
C
program get
implicit none
integer maxNumberOfValues
parameter( maxNumberOfValues = 10000 )
include 'grib_api_fortran.h'
integer ifile
integer iret
integer igrib
integer i
real*8 latitudeOfFirstPointInDegrees
real*8 longitudeOfFirstPointInDegrees
real*8 latitudeOfLastPointInDegrees
real*8 longitudeOfLastPointInDegrees
real*8 jDirectionIncrementInDegrees
real*8 iDirectionIncrementInDegrees
integer*4 numberOfPointsAlongAParallel
integer*4 numberOfPointsAlongAMeridian
real*8 values(maxNumberOfValues)
integer*4 numberOfValues
real*8 average
character*256 error
integer*4 size
size=maxNumberOfValues
ifile=5
iret=grib_open_file(ifile
X,'../data/reduced_latlon_surface.grib1','r')
call grib_check(iret)
C a new grib message is loaded from file
C igrib is the grib id to be used in subsequent calls
call grib_check( grib_new_from_file(ifile,igrib) )
C get as a integer
call grib_check(grib_get_int(igrib,'numberOfPointsAlongAParallel'
X,numberOfPointsAlongAParallel) )
write(*,*) 'numberOfPointsAlongAParallel='
X,numberOfPointsAlongAParallel
C get as a integer
call grib_check( grib_get_int(igrib,'numberOfPointsAlongAMeridian'
X,numberOfPointsAlongAMeridian) )
write(*,*) 'numberOfPointsAlongAMeridian='
X,numberOfPointsAlongAMeridian
C get as a real8
call grib_check( grib_get_real8(igrib
X,'latitudeOfFirstGridPointInDegrees'
X,latitudeOfFirstPointInDegrees) )
write(*,*) 'latitudeOfFirstGridPointInDegrees='
X,latitudeOfFirstPointInDegrees
C get as a real8
call grib_check( grib_get_real8(igrib
X,'longitudeOfFirstGridPointInDegrees'
X,longitudeOfFirstPointInDegrees) )
write(*,*) 'longitudeOfFirstGridPointInDegrees='
X,longitudeOfFirstPointInDegrees
C get as a real8
call grib_check( grib_get_real8(igrib
X,'latitudeOfLastGridPointInDegrees'
X,latitudeOfLastPointInDegrees) )
write(*,*) 'latitudeOfLastGridPointInDegrees='
X,latitudeOfLastPointInDegrees
C get as a real8
call grib_check( grib_get_real8(igrib
X,'longitudeOfLastGridPointInDegrees'
X,longitudeOfLastPointInDegrees) )
write(*,*) 'longitudeOfLastGridPointInDegrees='
X,longitudeOfLastPointInDegrees
C get as a real8
call grib_check( grib_get_real8(igrib
X,'jDirectionIncrementInDegrees'
X,jDirectionIncrementInDegrees) )
write(*,*) 'jDirectionIncrementInDegrees='
X,jDirectionIncrementInDegrees
C get as a real8
call grib_check( grib_get_real8(igrib
X,'iDirectionIncrementInDegrees'
X,iDirectionIncrementInDegrees) )
write(*,*) 'iDirectionIncrementInDegrees='
X,iDirectionIncrementInDegrees
C get the size of the values array
call grib_check(grib_get_size(igrib,'values',numberOfValues))
write(*,*) 'numberOfValues=',numberOfValues
C get data values
call grib_check(grib_get_real8_array(igrib,'values',values,size))
if ( size .ne. numberOfValues ) then
write(*,*) 'ERROR: wrong numberOfValues'
stop
endif
average = 0
do i=1,numberOfValues
average = average + values(i);
enddo
average =average / numberOfValues
write(*,*)'There are ',numberOfValues
X,' average is ',average
call grib_check(grib_release(igrib))
call grib_check(grib_close_file(ifile))
end
|
