Hi david, thanks for replying on my post. actually we'd like to use it more for describing density in a local area, say at a certain center-point, then try to render a circle of variable radius. does this help enlighten you?
Andy Allan gave this reply in the dev mailing list: *What kind of circles are you looking for? If you just want small circles to mark point locations, then make a .png and use a PointSymbolizer with it. But if you're trying to vary the size of the circles, like for example "draw me a circle where the radius is proportional to the population of the town", then you'd be better off creating polylines in postgis (or shapefile) and then just LineSymbolizer / PolygonSymbolizer depending on whether you want the outline or it filled.* although i wonder how exactly to implement this? we currently tried installing a local osm, and pre-render tiles using mapnik as our tile server. thanks. Enzo
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