⇐ ⇒

[CF-metadata] CF feature type trajectory (Ch. 9; May 10, 2011) and axis, attribute

From: Chris Paver <Christopher.Paver>
Date: Tue, 26 Jul 2011 21:13:05 +0000

Hey John,
Thanks for the info. Jonathan Gregory stated that this fix would roll out with
CF-1.6; is that still correct?

What will the Chapter 9 examples look like then? Will any requirements based on
feature types be addressed for the axis attribute?

Thanks,
Chris

On 07/25/2011 12:51 PM, John Caron wrote:
> Hi Chris:
>
> I think we agreed that this sentence in section 5 should be removed:
>
> The|axis|attribute is not allowed for auxiliary coordinate variables.
>
> If anyone has a better idea, let me know. otherwise i will submit a defect change.
>
> John
>
> On 7/20/2011 7:51 AM, Chris Paver wrote:
>> Dear list,
>>
>> Was there any resolution to the issue I brought up?
>>
>> Thanks,
>> Chris
>>
>> -------- Original Message --------
>> Date: Thu, 07 Jul 2011 11:59:09 -0700
>> From: Steve Hankin <Steven.C.Hankin at noaa.gov>
>> Subject: Re: [CF-metadata] CF feature type trajectory (Ch. 9; May 10,
>> 2011) and axis attribute
>> To: "Jeffrey F. Painter" <painter1 at llnl.gov>
>> Cc: cf-metadata at cgd.ucar.edu
>> Message-ID: <4E1601FD.5020006 at noaa.gov>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>>
>>
>> On 7/7/2011 11:53 AM, Jeffrey F. Painter wrote:
>> > > It looks as though you've been reviewing the public draft of the
>> > > future CF Conventions version 1.6. It's great that someone has been
>> > > looking at it!
>> > >
>> > > It seems to me that z in the examples of Appendix H (formerly
>> > > designated A9) plays the role of an auxiliary coordinate variable,
>> > > although technically it's not because there isn't (but should be) a
>> > > 'coordinates' attribute which lists auxiliary coordinate variables.
>> > > I don't know why axes are banned for auxiliary coordinate variables in
>> > > the case of trajectories. Something needs to be clarified here, or
>> > > the examples changed.
>> > >
>> > > This was ticket 37. Are there any comments from Steve Hankin, the
>> > > moderator, or any of the other people who contributed to writing
>> > > Chapter 9, or anyone else who knows more than me?
>> stand by. I think Chris has pointed out a needed correction to Chapter
>> 5 that was discussed, but was not documented. (thanks Chris) But need
>> to confirm with others.
>>
>> - Steve
>>
>>
>>
>> > >
>> > > Thanks to all!
>> > > - Jeff Painter
>> > >
>> > > On 7/7/11 5:13 AM, Chris Paver wrote:
>> >> >> Dear List,
>> >> >> I have been reviewing the use of the axis attribute as defined in
>> >> >> Chapter 5, and
>> >> >> comparing it to the trajectory example in the Chapter 9 document at
>> >> >> A9.4. The
>> >> >> Ch. 5 rules states that only a coordinate variable can have an axis
>> >> >> attribute,
>> >> >> whereas the auxiliary variables cannot. However, in Ch. 9, the single
>> >> >> trajectory dimension is time, but the variable z contains the axis
>> >> >> attribute. Is
>> >> >> this a change to the rule as stated in Ch. 5, or a typo? I briefly
>> >> >> looked over
>> >> >> the other feature types in Ch. 9, and they all look to have the vertical
>> >> >> variable listed with the axis attribute, so maybe it is a typo.
>> >> >>
>> >> >> Thanks,
>> >> >> Chris
>>
>
>
>
> _______________________________________________
> CF-metadata mailing list
> CF-metadata at cgd.ucar.edu
> http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata

-- 
Chris Paver, Oceanographer
NOAA/NODC E/OC1
1315 East-West Hwy
Silver Spring MD 20910
Phone:  301-713-3272 ext. 118
Fax:  301-713-3302
http://www.nodc.noaa.gov/
Received on Tue Jul 26 2011 - 15:13:05 BST

This archive was generated by hypermail 2.3.0 : Tue Sep 13 2022 - 23:02:41 BST

⇐ ⇒