eccodes/examples/python/nearest.py

53 lines
1.3 KiB
Python

#
# Copyright 2005-2015 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.
#
import traceback
import sys
from gribapi import *
INPUT='../../data/reduced_gaussian_lsm.grib1'
VERBOSE=1 # verbose error reporting
def example():
points = ((30,-20),(13,234))
f = open(INPUT)
gid = grib_new_from_file(f)
for lat,lon in points:
nearest = grib_find_nearest(gid,lat,lon)[0]
print lat,lon
print nearest.lat,nearest.lon,nearest.value,nearest.distance,nearest.index
four = grib_find_nearest(gid,lat,lon,is_lsm = False,npoints = 4)
for i in range(len(four)):
print "- %d -" % i
print four[i]
print "-"*100
grib_release(gid)
f.close()
def main():
try:
example()
except GribInternalError,err:
if VERBOSE:
traceback.print_exc(file=sys.stderr)
else:
print >>sys.stderr,err.msg
return 1
if __name__ == "__main__":
sys.exit(main())