From: David Blasby Date: Thu, 18 Mar 2004 09:07:01 -0800 Subject: [postgis-users] (no subject) In-Reply-To: <1079611586.32163.13.camel@davidpc> References: <8F4A22E017460A458DB7BBAB65CA6AE512D199@openmanage> <1079611586.32163.13.camel@davidpc> Message-ID: <4059D735.2030700@refractions.net> David Sharp wrote: > Is the function only possible between two points ? Yes. The calculations for line-point distance on a ellipse are extreamly complex - just point-point distance calculation are several 100 lines... dave