On 6/23/07, Anselm Hook <[EMAIL PROTECTED]> wrote:
One question that I've never been able to quite clarify:
Can GML express multiple instances of geometry?
Anselm,
Yes, it can. Few have accused GML if not providing enough options.
I would like to express a city building and have multiple instances of that
building at different orientations and positions.
A document describing my imaginary city should preserve high level
abstractions: that the building in it are multiply instanced - rather than
"flattening" out to a series of polygons and vertexes in duplicate. I want
a succinct transport that models my own human understanding.
Well, I'm not sure exactly what you mean here.
It appears that this must be possible insofar as that GML itself appears to
be a kind of framework notation within which one defines specialized
profiles. CityGML for example may have this capability?
I can't speak for CityGML, but GML be able to handle what
you want. Of course, it may be that no application understands
the semantics of your dataset.
Best regards,
--
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I set the clouds in motion - turn up | Frank Warmerdam, [EMAIL PROTECTED]
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush | Geospatial Programmer for Rent
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