1#
2# Copyright 2005-2018 ECMWF.
3#
4# This software is licensed under the terms of the Apache Licence Version 2.0
5# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
6#
7# In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
8# virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
9#
10
11import traceback
12import sys
13
14from gribapi import *
15
16INPUT = '../../data/reduced_gaussian_lsm.grib1'
17VERBOSE = 1  # verbose error reporting
18
19
20def example():
21    points = ((30, -20), (13, 234))
22
23    f = open(INPUT)
24    gid = grib_new_from_file(f)
25
26    for lat, lon in points:
27        nearest = grib_find_nearest(gid, lat, lon)[0]
28        print lat, lon
29        print nearest.lat, nearest.lon, nearest.value, nearest.distance, nearest.index
30
31        four = grib_find_nearest(gid, lat, lon, is_lsm=False, npoints=4)
32        for i in range(len(four)):
33            print "- %d -" % i
34            print four[i]
35
36        print "-" * 100
37
38    grib_release(gid)
39    f.close()
40
41
42def main():
43    try:
44        example()
45    except GribInternalError, err:
46        if VERBOSE:
47            traceback.print_exc(file=sys.stderr)
48        else:
49            print >>sys.stderr, err.msg
50
51        return 1
52
53if __name__ == "__main__":
54    sys.exit(main())
55