mirror of https://github.com/ecmwf/eccodes.git
58 lines
1.6 KiB
Python
58 lines
1.6 KiB
Python
# Copyright 2005-2015 ECMWF.
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#
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# This software is licensed under the terms of the Apache Licence Version 2.0
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# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
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#
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# In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
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# virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
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import traceback
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import sys
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from eccodes import *
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INPUT = '../../data/regular_latlon_surface.grib1'
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OUTPUT = 'out.bmp.grib'
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MISSING = 9999
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VERBOSE = 1 # verbose error reporting
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def example():
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fin = open(INPUT)
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fout = open(OUTPUT,'w')
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gid = codes_grib_new_from_file(fin)
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codes_set(gid,'missingValue', MISSING)
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values = codes_get_values(gid)
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codes_set(gid, 'bitmapPresent', 1)
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# Change some data values to be missing
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num_missing = 0
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for i in range(100):
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if i % 2 == 0:
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values[i] = MISSING
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num_missing += 1
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codes_set_values(gid, values)
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# Check counts of missing and non-missing values
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num_data = codes_get(gid,'numberOfDataPoints',int)
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assert(codes_get(gid,'numberOfCodedValues',int) == num_data-num_missing)
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assert(codes_get(gid,'numberOfMissing',int) == num_missing)
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codes_write(gid,fout)
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codes_release(gid)
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fin.close()
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fout.close()
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def main():
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try:
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example()
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except CodesInternalError,err:
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if VERBOSE:
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traceback.print_exc(file=sys.stderr)
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else:
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print >> sys.stderr,err.msg
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return 1
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if __name__ == "__main__":
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sys.exit(main())
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