Re: basic topology and the Data Model with geo-locations

• To: visad-list@xxxxxxxxxxxxx
• Subject: Re: basic topology and the Data Model with geo-locations
• From: Tim Stevenson <tims@xxxxxxxxxx>
• Date: Fri, 07 Apr 2000 20:29:07 +1000

We have some surveyors as users that prefer (y, x, z) which really makes
things confusing a lot of the time.

Tim.

Doug Lindholm wrote:
> 
> Steve Emmerson wrote:
> >
> > Bill,
> >
> > >Date: Thu, 06 Apr 2000 12:45:03 -0500
> > >From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>
> > >To: Stuart Wier <wier@xxxxxxxxxxxxxxxx>
> > >Subject: Re: basic topology and the Data Model with geo-locations
> >
> > In the above message, you wrote:
> >
> > > 3. ((lat, lon, alt) -> (time, obs))
> > > In this case, the domain Set would be a Gridded3DSet with
> > > manifold dimension = 1.  This is probably the preferable
> > > way, since it preserves the notion that the spatial points
> > > are along a path rather than just a random scatter.
> >
> > How would one programatically know that "time" is the manifold variable
> > and not "obs"?
> >
> 
> I'm partial to (time) -> ((lon, lat, alt) -> (obs)). This makes
> resampling by time or space rather convenient. VMET assumes such an
> arrangement.
> 
> I don't want to start a religious war but I also prefer (lon,lat,alt)
> over (lat,lon,alt) because it relates directly to (x,y,z).
> 
> Doug
> 
> --
> *----------------------------------------------------------------------*
> | Doug Lindholm, Software Engineer          |  E-mail: lind@xxxxxxxx   |
> | Research Applications Program             |   Phone: 303-497-8374    |
> | National Center for Atmospheric Research  |                          |
> | P.O. Box 3000                             |     There's no place     |
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-- 
Tim Stevenson
Surpac Software International
162A Roslyn Avenue, Blackmans Bay, Tasmania, Australia 7052
Phone/Fax:      +61 3 62294610
Home Phone:     +61 3 62298866
Email:          tims@xxxxxxxxxx

• References:
  • Re: basic topology and the Data Model with geo-locations
    • From: Steve Emmerson
  • Re: basic topology and the Data Model with geo-locations
    • From: Doug Lindholm