Thanks David. Those are excellent references. I hadn't seen Matt Perry's site before. The Tissot Indicatrix certainly shows the distortion that I need to deal with due to map projection. I think I can work out the geometry of the ellipses.
Assuming that the application needs to be capable of rendering up to 100 of these ellipses at varying locations at any given time, would you say the most efficient way to do this is to program the app to dynamically build a shape file and add it as a map layer each time a user requests the page, or create them as symbols (in which case I think I would need a different layer for each ellipse). I suppose I might run into URL length limits with the latter. Is there another possibility that I am missing? -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Dynamically-draw-different-sized-ellipses-on-map-tp5508425p5511294.html Sent from the Mapserver - User mailing list archive at Nabble.com. _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
