Calculates bearing. Return radians.

Example

iex> berlin = [52.5075419, 13.4251364]
iex> paris = [48.8588589, 2.3475569]
iex> Geocalc.bearing(berlin, paris)
-1.9739245359361486
iex> Geocalc.bearing(paris, berlin)
1.0178267866082613

Converts degrees to radians. Return radians.

Finds point between start and end points in direction to end point with given distance (in meters). Finds point from start point with given distance (in meters) and bearing. Return array with latitude and longitude.

Example

iex> berlin = [52.5075419, 13.4251364]
iex> paris = [48.8588589, 2.3475569]
iex> distance = 500_000
iex> Geocalc.destination_point(berlin, paris, distance)
[50.5582900851695, 6.90714527103055]

Example

iex> berlin = [52.5075419, 13.4251364]
iex> bearing = -1.9739245359361486
iex> distance = 100_000
iex> Geocalc.destination_point(berlin, bearing, distance)
[52.147030316318904, 12.076990111001148]

Calculates distance between 2 points. Return distance in meters.

Example

iex> berlin = [52.5075419, 13.4251364]
iex> paris = [48.8588589, 2.3475569]
iex> Geocalc.distance_between(berlin, paris)
878327.4291149472
iex> Geocalc.distance_between(paris, berlin)
878327.4291149472

Finds intersection point from start points with given bearings. Return array with latitude and longitude. Raise an exception if no intersection point found.

Example

iex> berlin = [52.5075419, 13.4251364]
iex> berlin_bearing = -1.974
iex> london = [51.5286416, -0.1015987]
iex> london_bearing = 1.512
iex> Geocalc.intersection(berlin, berlin_bearing, london, london_bearing)
[51.4757093398206, 9.75751801580032]

Converts radians to degrees. Return degrees.