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

Hi Steve,

> > 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"?

The current VisAD Set classes do not parameterize manifolds
and hence do not asscoaiet RealTypes with such parameters.
The manifold is simply described by a topology of lines,
triangles, squares, etc.

Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI  53706
hibbard@xxxxxxxxxxxxxxxxx  608-263-4427  fax: 608-263-6738

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