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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_get_keys
#
# Description: how to read values of different type of keys from BUFR messages.
#
from __future__ import absolute_import
import sys
import traceback
from eccodes import *
INPUT = "../../data/bufr/syno_1.bufr"
VERBOSE = 1 # verbose error reporting
def example():
# open bufr file
f = open(INPUT, "rb")
cnt = 0
# loop for the messages in the file
while 1:
# get handle for message
bufr = codes_bufr_new_from_file(f)
if bufr is None:
break
print("message: %s" % cnt)
# we need to instruct ecCodes to expand all the descriptors
# i.e. unpack the data values
codes_set(bufr, "unpack", 1)
# ----------------------------------
# get all the expanded data values
# ----------------------------------
key = "numericValues"
# get size
num = codes_get_size(bufr, key)
print(" size of %s is: %s" % (key, num))
# get values
values = codes_get_array(bufr, key)
for i in range(len(values)):
print(" %d %.10e" % (i + 1, values[i]))
cnt += 1
# delete handle
codes_release(bufr)
# close the file
f.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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