Alex, Are you trying to find the the point at the intersection of the perpendicular of the polyline line segment (extended from the target point) with the line segment itself, or the point at the intersection of a line extended directly east/west from the target point and the polyline?
>From your picture, it could be either case, although I am guessing it is the first case. The Sunburned Surveyor On Wed, May 14, 2008 at 6:41 AM, Alexandre Pretyman <[EMAIL PROTECTED]> wrote: > Hello All, > > I am new to GIS and JTS (and not sure if this is the right place to post, > but found nowhere else) , so somethings might not be obvious to me, like the > problem I having to solve. > > I have a polyline and a given point outside it, and I need to find the > representatation of the given point in the polyline as shown on this > picture: http://img377.imageshack. us/img377/5016/pointscj2. jpg > > The Polyline is ABCD and the given Point is Y and I need to find out X, does > anyone have any ideas of how can achieve this? Is there a proper name for > this operation? > > Thanks, > Alex. P. > > > _______________________________________________ > jts-devel mailing list > [email protected] > http://lists.refractions.net/mailman/listinfo/jts-devel > > _______________________________________________ jts-devel mailing list [email protected] http://lists.refractions.net/mailman/listinfo/jts-devel
