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Distance calculation for spherical coordinates on a perfect sphere using haversine.
template<typename RadiusType, typename CalculationType> class strategy::distance::haversine { // ... };
| Parameter | Default | Description | 
|---|---|---|
| typename RadiusType | numeric type for radius (of sphere, earth) | |
| typename CalculationType | void | numeric type for calculation (e.g. high precision); if void then it is extracted automatically from the coordinate type and (if necessary) promoted to floating point | 
| Function | Description | Parameters | 
|---|---|---|
| 
 haversine(RadiusType const & radius = 1.0) 
 | Constructor. | RadiusType const &: radius: radius of the sphere, defaults to 1.0 for the unit sphere | 
| Function | Description | Parameters | Returns | 
|---|---|---|---|
| 
 template<typename Point1, typename Point2> calculation_type< Point1, Point2 >::type apply(Point1 const & p1, Point2 const & p2) 
 | applies the distance calculation | Point1 const &: p1: first point Point2 const &: p2: second point | the calculated distance (including multiplying with radius) | 
| 
 RadiusType radius() 
 | access to radius value | the radius | 
          #include <boost/geometry/strategies/spherical/distance_haversine.hpp>