[mapserver-users] How to create [n]mile radius polygon(circle)

Ed McNierney ed at topozone.com
Thu Sep 27 17:42:06 EDT 2001


John -

You could use a simple circle symbol (i.e. a square ellipse) and set its
SIZE appropriately.  You would need to do the math to convert miles to
pixels in order to set the symbol SIZE.

	- Ed

Ed McNierney
Chief Mapmaker
TopoZone.com
ed at topozone.com
(978) 251-4242


-----Original Message-----
From: Arthur, John [mailto:John.Arthur at voicestream.com]
Sent: Thursday, September 27, 2001 4:59 PM
To: mapserver-users
Subject: [mapserver-users] How to create [n]mile radius polygon(circle)


How can i create a [n]mile radius circle either with a polygon or
symbol.

I have managed to create a crude oval octigon based on 12 lat/long
points
but I cant seem to get a smooth circle or the correct mile radius.


John Arthur



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