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Ticket Resolution Summary Owner Reporter
#42 fixed Amendments to CF Conformance document cf-conventions@… ros
Description

Whilst updating the checker I came across a couple of omissions in the conformance document. I propose the follow additions, which are implied in the convention but not explicitly stated in the conformance document.

3.5 Flags
Requirements:

 * If the flag_values attribute is present then the flag_meanings attribute must be specified.

 * The type of the flag_meanings attribute is a string whose value is a
blank separated list of words or phrases (words connected by underscores).
#44 fixed clarify that coordinates indicate gridpoint location cf-conventions@… jonathan
Description

In view of the problem raised by Thomas Lavergne on the email list in the thread "X and Y projection coordinate (center vs corner)", I propose that we insert the following clarification at the end of the introduction to section 4 of the CF standard:

The values of a coordinate variable or auxiliary coordinate variable indicate the locations of the gridpoints. The locations of the boundaries between cells are indicated by bounds variables (see section 7.1 on "Cell Boundaries"). If bounds are not provided, an application might reasonably assume the gridpoints to be at the centers of the cells, but we do not require that in this standard.

I don't believe that inserting this text would change the intention of the CF standard.

#45 fixed Conventions attribute should have value "CF-1.4". cf-conventions@… jonathan
Description

Second paragraph of 1.3 should read

We recommend that the NUG defined attribute Conventions be given the string value "CF-1.4" to identify datasets that conform to these conventions.

This mistake was spotted by Constantine Khroulev. We should remember to keep this sentence up-to-date in each version.

Jonathan

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