Paul Ramsey wrote: > Good question. An arc requires at least 3 points, but a linestring does not. > > Mark? I'm assuming you mean Mark L here, but just in case you don't then I agree that this is a bug ;) ATB, Mark. -- Mark Cave-Ayland - Senior Technical Architect PostgreSQL - PostGIS Sirius Corporation plc - control through freedom http://www.siriusit.co.uk t: +44 870 608 0063