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Subject: Re: Circle and Polygon

On 11 Jun 2005, at 00:45, Aymond, Patti wrote:

> With the size and complexity of the polygons that represent 
> jurisdictional
> boundaries, I fear that the GML polygon representation would become
> prohibitively large. Some applications are already having problems 
> ingesting
> the large messages containing the simplified version for complex 
> polygons.

Instead of the <gml:pos>12 4</gml:pos> tags, you can have a single
<gml:posList>12 4.... </gml:posList> tag.

One of other key benefits from reusing GML is their use of spatial 
reference system pointers.
Without the spatial reference system pointer, we will not be able to 
across jurisdictional boundaries who use different coordinate systems, 
or with many legacy data sources.

A list of defined URNs from the OGC for these identifiers:

Cheers...  Renato Iannella
Project Leader, NICTA, Brisbane, QLD, AUSTRALIA
P: +61 7 3000 0484 F: +61 7 3000 0480 M: +61 4 1313 2206
E: renato@nicta.com.au W: http://nicta.com.au

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