[CF-metadata] Multiple zeros in flag_values allowed?

From: Jim Biard <jbiard>
Date: Tue, 20 Nov 2018 11:51:24 -0500

Julien,

That's fine. The conformance document probably needs a better statement
of the requirement when flag masks are used.

Grace and peace,

Jim

On 11/20/18 11:40 AM, Julien Demaria wrote:
>
> Hi,
>
> We want to define a flags variable defining like that:
>
> var:flag_masks = 3, 3, 3, 3, 12, 12, 12, 12 ;
>
> var:flag_values = 0, 1, 2, 3, ??0,??? 4,? 8, 12 ;
>
> var:flag_meanings = ?very_bad_quality ??????bad_quality
> ???????good_quality??????? very_good_quality
>
> ?????????????????????????????very_bad_weather ???bad_weather???
> good_weather??? very_good_weather? ;
>
> I understand from
> http://cfconventions.org/Conformance/conformance.html
> <http://cfconventions.org/Conformance/conformance.html> that it is not
> allowed to use several time the same value (here zero) in flag_values:
>
> *Requirements:*
>
> ?The |*flag_values*|attribute values must be mutually exclusive among
> the set of |*flag_values*|attribute values defined for that variable.
>
> So it means that for each new ?bits combination? in the flags
> definition we lost one of the combination because we cannot use zero
> more than one time?
>
> Do you confirm this? What is the reason?
>
> Thanks in advance,
>
> Julien
>
>
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Received on Tue Nov 20 2018 - 09:51:24 GMT