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To explain the use of these keys the following example using the using bufr_filter is provided, but please note that these same keys can be set using the Fortran and Python interfaces as well and no special functions have been implemented in the bufr_filter for this feature.
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transient originalNumberOfSubsets = numberOfSubsets;
set unpack=1;
transient extractDateTimeYearStart=2012;
transient extractDateTimeMonthStart=10;
transient extractDateTimeDayStart=31;
transient extractDateTimeHourStart=0;
transient extractDateTimeMinuteStart=1;
transient extractDateTimeSecondStart=31.6;
transient extractDateTimeYearEnd=2012;
transient extractDateTimeMonthEnd=10;
transient extractDateTimeDayEnd=31;
transient extractDateTimeHourEnd=0;
transient extractDateTimeMinuteEnd=1;
transient extractDateTimeSecondEnd=39.6;
set doExtractDateTime=1; # This does an implicit 'pack'
if (extractedDateTimeNumberOfSubsets != 0) {
write;
}
print "extracted [extractDateTimeNumberOfSubsetsextractedDateTimeNumberOfSubsets] of [originalNumberOfSubsets] subsets"; |
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This example can be used on any multi-subset input file in compressed form as follows:
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>% bufr_filter -o out.bufr extract.filter in.bufr |
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