azimuth

Question

azimuth

Closed this issue 2 years ago · 2 comments

When is the azimuth ? 0,180, - 180,thank you

Answer 1 · 2022-10-21T12:27:39.000Z

In the context of geodesic calculations, azimuth is the heading measured clockwise from north. So azimuth = ±0 means heading due north and azimuth = ±180 means due south. The sign on 0 or 180 only matters if the path passes over a pole and then it governs whether the path is treated as east-going (azimuth = +0 or +180) or west-going (azimuth = -0 or -180). This then governs the destination longitude (if LONG_UNROLL is set) and the area between the geodesic and the equator.

Answer 2 · 2022-10-26T05:00:41.000Z

In the context of geodesic calculations, azimuth is the heading measured clockwise from north. So azimuth = ±0 means heading due north and azimuth = ±180 means due south. The sign on 0 or 180 only matters if the path passes over a pole and then it governs whether the path is treated as east-going (azimuth = +0 or +180) or west-going (azimuth = -0 or -180). This then governs the destination longitude (if LONG_UNROLL is set) and the area between the geodesic and the equator.

thank you