geosphere

Along Track Distance

Antipodes

Area of a longitude/latitude polygon

Direction of travel

Rhumbline direction

Centroid of spherical polygons

World countries

Daylength

Destination given bearing (direction) and distance

Destination along a rhumb line

Cross Track Distance

Distance between points and lines or the border of polygons.

'Law of cosines' great circle distance

Distance on an ellipsoid (the geodesic)

'Haversine' great circle distance

'Meeus' great circle distance

Distance along a rhumb line

'Vincenty' (ellipsoid) great circle distance

'Vincenty' (sphere) great circle distance

Distance matrix

Final direction

Intersections of two great circles

Intersections of two great circles

Latitude on a Great Circle

Longitude on a Great Circle

Highest latitude on a great circle

geodesic and inverse geodesic problem

Mean location of sperhical coordinates

Geosphere

Great circle

Great circle

Distance to the horizon

Intermediate points on a great circle (sphere)

Length of lines

Add vertices to a polygon or line

Mercator projection

Mid-point

Is a point on a given great circle?

Compute the perimeter of a longitude/latitude polygon

Plot

Random or regularly distributed coordinates on the globe

Reference ellipsoids

Span of polygons