great_circle_distance 0.0.2

Calculate the great-circle distance on the Earth having a pair of Latitude/Longitude points.

Great-circle distance

Calculate the great-circle distance on the Earth having a pair of Latitude/Longitude points

The great-circle distance is the shortest distance between two points on the surface of a sphere, measured along the surface of the sphere (as opposed to a straight line through the sphere's interior)

Included in this library:

• Spherical law of cosines
• Haversine formula
• Vincenty` formula (por from the Android implementation)

Disclaimer: The earth is not quite a sphere. This means that errors(0.3%,0.5% errors) from assuming spherical geometry might be considerable depending on the points; so: don't trust your life on this value

Check Wikipedia for detailed description on Great-circle distance