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
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