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Subject: Circle and Polygon

The "Circle" element defines a substructure of "longitude, latitude 
The "Polygon" element defines a substructure of "longitude, latitude 
longitude, latitude..."

Q1: It would be useful to define a re-useable structure for longitude 
and latitude that is
used for both elements.
It would end up like this:
     <long>38.333</long> <lat>-122.333</lat>
     <long>38.333</long> <lat>-122.333</lat>
     <long>33.333</long> <lat>-13.333</lat>

Q2: The "Polygon" element states that the first long/lat pair is 
repeated at the end of the list.
If this necessary? That is, we can assume that if it is a Polygon, the 
last long/lat pair will
have to join to the first?


Dr 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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