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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.
#
# Python implementation: bufr_copy_data
#
# Description: How to copy all the values in the data section that are present in the same
# position in the data tree and with the same number of values to the output handle.
# This example is for messages which use the operator 203YYY (overridden reference values)
#
from __future__ import print_function
import traceback
import sys
from eccodes import *
VERBOSE = 1 # verbose error reporting
def example(input_filename, output_filename):
f = open(input_filename, 'rb')
ibufrin = codes_bufr_new_from_file(f)
f.close()
# Need to unpack to get delayed replications and reference values from input
codes_set(ibufrin,'unpack',1)
references=codes_get_array(ibufrin,'inputOverriddenReferenceValues')
replication=codes_get_array(ibufrin,'delayedDescriptorReplicationFactor')
ibufrout=codes_clone(ibufrin)
# Copy over to output
codes_set_array(ibufrout,'inputOverriddenReferenceValues',references)
codes_set_array(ibufrout,'inputDelayedDescriptorReplicationFactor',replication)
# Keep all original descriptors and add 'meanWindDirectionForSurfaceTo1500M' (011044)
ivalues=( 203014, 7030, 7031, 203255, 307080, 11044, )
codes_set_array(ibufrout,'unexpandedDescriptors',ivalues)
codes_bufr_copy_data ( ibufrin,ibufrout)
outfile=open(output_filename, 'wb')
codes_write(ibufrout,outfile)
outfile.close()
codes_release(ibufrin)
codes_release(ibufrout)
def main():
if len(sys.argv) < 3:
print('Usage: ', sys.argv[0], ' bufr_in bufr_out', file=sys.stderr)
sys.exit(1)
input_filename = sys.argv[1]
output_filename = sys.argv[2]
try:
example(input_filename, output_filename)
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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