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#100: Clarifications to the preamble of section 5
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  Reporter:  jonathan        |       Owner:  [email protected]
      Type:  defect          |      Status:  new                          
  Priority:  medium          |   Milestone:                               
 Component:  cf-conventions  |     Version:                               
Resolution:                  |    Keywords:                               
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Comment (by jonathan):

 Dear all

 On the email list, Randy Horne has raised an
 [http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2013/056410.html issue]
 of clarity regarding the use of non-spatiotemporal coordinates. Since that
 point is rather similar to others in this ticket, I'd like to add to the
 present proposal, to make changes in section 4, as follows:

 Delete the sentence, "Coordinate types other than latitude, longitude,
 vertical, and time are allowed" at the start of the third paragraph.

 Insert new text at the start of the section

   The commonest use of coordinate variables is to locate the data in space
 and time, but coordinates may be provided for any other continuous
 geophysical quantity (e.g. density, temperature, radiation wavelength,
 zenith angle of radiance, sea surface wave frequency) or discrete category
 (see Section  4.5, "Discrete axis", e.g. area type, model level number,
 ensemble member number) on which the data variable depends.

 continuing with the existing text, "Four types of coordinates ...".

 Jonathan

-- 
Ticket URL: <https://cf-pcmdi.llnl.gov/trac/ticket/100#comment:3>
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