On 24/02/11 13:21, Michael Decker wrote:
> Hi all,
>
>> * If the standard_name attr contains the "count" modifier, the quantity is
>> dimensionless. The checker should take standard_name modifiers into account
>> (Appendix C) as well as the canonical units from the standard name table
>> (and the cell_methods) when deciding what units a quantity can have. This is
>> not explicitly stated in the conformance document, but it should be. I will
>> create a trac defect ticket for that.
> I failed to find the count modifier (or even the word "count") anywhere
> in the CF documents. So far I have not considered it a valid modifier at
> all - I can see its usefulness, though. If I did not overlook something,
> then maybe it should be added?
Yes, I was confused by this for a while this morning too, because I
haven't coded the CF Checker to allow a modifier called "count" either.
Please correct me if I'm wrong but I'm assuming that the term "count"
refers to the modifier called "|number_of_observations".|
When I coded the checks on standard_name modifier I overlooked the fact
that Appendix C states the units should be 1.
I'll fix this in the checker shortly. As Jonathan has suggested this
should be added to the Conformance Document as this is formally
what the CF Checker is based on.
Ros.
--
Rosalyn Hatcher
NCAS Computational Modelling Services
Dept. of Meteorology, University of Reading,
Earley Gate, Reading. RG6 6BB
Email: r.s.hatcher at reading.ac.uk Tel: +44 (0) 118 378 6016
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Received on Thu Feb 24 2011 - 08:18:40 GMT
