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
>
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Received on Mon Jul 25 2011 - 06:51:19 BST
