Great Circles, Geodesics, and Rhumb Lines

Find shortest path between two points, find curve that crosses meridians at same angle

A great circle is the shortest path between two points along the surface of a sphere, a geodesic is the shortest path between two points on a curved surface, and a rhumb line is a curve that crosses each meridian at the same angle. Use these functions to:

Find distances and azimuths along great circle, geodesic, and rhumb line tracks.
Find the coordinates of reckon points and antipodes.
Find the coordinates of track points along great circle, geodesic, and rhumb line tracks.
Find the intersection points of great circles, geodesics, and rhumb lines.

Functions

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Distance and Azimuth

`distance`	Distance between points on sphere or ellipsoid
`azimuth`	Azimuth between points on sphere or ellipsoid
`departure`	Departure of longitudes at specified latitudes
`meridianarc`	Ellipsoidal distance along meridian

Reckon and Antipode

`reckon`	Point at specified azimuth and range on sphere or ellipsoid
`antipode`	Point on opposite side of globe
`meridianfwd`	Reckon position along meridian

Track Points

`track`	Geographic track points from waypoints
`track1`	Geographic track points from starting point, azimuth, and range
`track2`	Geographic track points from starting and ending points
`trackg`	Display great circle or rhumb line on `axesm`-based map using mouse

Intersection Points

`gcxgc`	Intersection points for pairs of great circles
`gcxsc`	Intersection points for great and small circle pairs
`rhxrh`	Intersection points for pairs of rhumb lines

Topics

Comparison of Rhumb Lines and Great Circles
A rhumb line path crosses each meridian at the same angle. A great circle path is the shortest path between two points on the surface of a sphere.