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#
# (C) Copyright 2005- 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 random
import sys
import traceback
from eccodes import *
INPUT = "../../data/constant_field.grib1"
OUTPUT = "out.clone.grib"
VERBOSE = 1 # verbose error reporting
def example():
fin = open(INPUT, "rb")
fout = open(OUTPUT, "wb")
gid = codes_grib_new_from_file(fin)
assert not codes_is_missing(gid, "Ni")
assert not codes_is_missing(gid, "Nj")
nx = codes_get(gid, "Ni")
ny = codes_get(gid, "Nj")
for step in range(0, 24, 6):
clone_id = codes_clone(gid)
codes_set(clone_id, "step", step)
values = [random.random() for i in range(nx * ny)]
codes_set_values(clone_id, values)
codes_write(clone_id, fout)
codes_release(clone_id)
codes_release(gid)
fin.close()
fout.close()
def main():
try:
example()
except CodesInternalError as err:
if VERBOSE:
traceback.print_exc(file=sys.stderr)
else:
sys.stderr.write(err.msg + "\n")
return 1
if __name__ == "__main__":
sys.exit(main())
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