Re: [CF-metadata] [cf-convention/cf-conventions] Correction to the definition of "ocean sigma over z coordinate" in Appendix D (#314)

2021-04-28 Thread David Hassell
That sounds good to me, too.

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Re: [CF-metadata] [cf-convention/cf-conventions] Correction to the definition of "ocean sigma over z coordinate" in Appendix D (#314)

2021-04-28 Thread JonathanGregory
Yes, thanks, I agree with Klaus that we should deprecate it, so that a warning 
is given by the checker. I think we should also check its value, because even 
if deprecated it may be used by software. Jonathan


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Re: [CF-metadata] [cf-convention/cf-conventions] Correction to the definition of "ocean sigma over z coordinate" in Appendix D (#314)

2021-04-28 Thread Klaus Zimmermann
Another option would be to declare `nsigma` deprecated. This way it would be 
around for some time to come, but new data would avoid using it and it would be 
clear that that is correct. In a future release, such backward-incompatible 
changes could be bundled. For reference, I link here to [the Numpy deprecation 
policy](https://urldefense.us/v3/__https://numpy.org/neps/nep-0023-backwards-compatibility.html__;!!G2kpM7uM-TzIFchu!h-MRQLFC6twLFrV7lbOu_-sCZTYV4BOC-gq-k-aRSSm8Uv5QjEQIwhGxMrf9Z2EeDI8_n3C6L4k$
 ) and [the Python deprecation 
policy](https://urldefense.us/v3/__https://www.python.org/dev/peps/pep-0387/*making-incompatible-changes__;Iw!!G2kpM7uM-TzIFchu!h-MRQLFC6twLFrV7lbOu_-sCZTYV4BOC-gq-k-aRSSm8Uv5QjEQIwhGxMrf9Z2EeDI8_wF3FdfI$
 ) as examples of how other projects handle this kind of issue.

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