Geolocation functions

tracker:cartesian-distance

	tracker:cartesian-distance (?lat1, ?lat2, ?lon1, ?lon2)
      

Calculates the cartesian distance between 2 points expressed by ?lat1/?lon1 and ?lat2/?lon2.

tracker:haversine-distance

	tracker:haversine-distance (?lat1, ?lat2, ?lon1, ?lon2)
      

Calculates the haversine distance between 2 points expressed by ?lat1/?lon1 and ?lat2/?lon2.