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Subject: Re: [emergency] Circle and Polygon

Renato -

Yes, you are correct. There will some excess tag-gage. However, there are 
benefits - such as the ability to better express additional contextual info 
related to the circle and the polygon. I am beginning to get additional 
feedback from the OGC members. WE want a simple, but extensible and 
expressive definition for CIRCLE and POLYGON. Also was wondering if we 
should add "ELLIPSE" as much of the geometry that is available from the cell 
phone carriers is either point or ellipse.



----- Original Message ----- 
From: "Renato Iannella" <renato@nicta.com.au>
To: "Emergency_Mgt_TC TC" <emergency@lists.oasis-open.org>
Sent: Wednesday, June 08, 2005 11:16 PM
Subject: Re: [emergency] Circle and Polygon

> On 8 Jun 2005, at 16:07, Art Botterell wrote:
>> These structures were based the OGC GML specs.  Subdividing them further 
>> seemed like excess tag-gage without any real information added... 
>> especially in the case of polygons, which can get quite sizeable even in 
>> the current form.
>> ...
>> Again, this came from GML precedent.  It's a small redundancy we accepted 
>> for the sake of compatibility.
> I fully support compatibility with GML.
> However, my understanding of GML 3.1 is that it actually does use the 
> "excess tag-gage", such as:
>  <gml:CircleByCenterPoint>
>    <gml:pos>  </gml:pos>
>    <gml:radius> </gml:radius>
>  </gml:CircleByCenterPoint>
> (apologies if XML is not spot on - but I did speak to Simon Cox ;-)
> 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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