2010/1/9 <ed...@billiau.net>: > Eg Air navigation east coast north america to europe. > This is long enough that shown on a Mercator projection the straight line > which the pilot flies is shown as a curve - because in 3D it is a curve.
Not just a curve, but a S shape when they cross the equator. You can also see how straight lines curve going from Australia/NZ to South America when the flight goes past the south pole, the curve bends very very southwards on a map, but is a straight direction of flight. _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk