OASIS Emergency Management TC

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  • 1.  Circle and Polygon

    Posted 06-08-2005 05:41
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    Subject: Circle and Polygon


    
    
    The "Circle" element defines a substructure of "longitude, latitude 
    radius".
    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:
       <circle>
         <long>38.333</long> <lat>-122.333</lat>
         <radius>12</radius>
       </circle>
       <polygon>
         <long>38.333</long> <lat>-122.333</lat>
         <long>33.333</long> <lat>-13.333</lat>
         ...
       </polygon>
    
    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?
    
    
    Cheers...
    
    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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