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When we set the "unpack" key to decode the data section, for every Table B element key we create a set of attributes. So for example examine the output from "bufr_dump -jf" and you see meta-data attributes like |
BUFR: Performance improvement by skipping some keys
Step-by-step guide
When we set the "unpack" key to decode the data section, for every Table B element key we create a set of attributes. So for example examine the output from "bufr_dump -jf" and you see meta-data attributes like:
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In fact the cost of creating these extra keys is quite high so it would be advantageous for the users who do not care about these keys to omit them altogether. This can be done (from ecCodes version 2.9.0) by setting the key:
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skipExtraKeyAttributes |
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Setting this key will also speed up encoding: Set it to 1 before setting the "unexpandedDescriptors".
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