> Hi, > I used ST_BUFFER(geometry, radius) to get a polygon. > I viewed the polygon on Geo server, it is a circle, But when I combine Geo > server and google map, the polygon becomes an eclipse. > > I want the polygon calculate from ST_BUFFER(geometry, radius) is a circle > when view it on map. Please help me. > > Thanks and cheers > Vy Nguyen >
Hi Depending on the choosen projection, a circle in cartesian coordinates appears as an ellipse once projected onto the earth surface due to surface curvature. It is a normal behaviour. Here is an interesting page on that: http://www.perrygeo.net/wordpress/?p=4 Nicolas _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
