I got interested in the effects of homing on a waypoint as opposed to
tracking. I have seen the illustrations and have understood the concept for
some time, but I have never seen any numbers. If you are interested here is
the results of my playing around with Excel:

http://www.cockpitgps.com/other_arti...rack_error.htm

John Bell
www.cockpitgps.com
www.smallboatgps.com