boost::geometry::strategy::distance::haversine< RadiusType, CalculationType > Class Template Reference

Distance calculation for spherical coordinates on a perfect sphere using haversine. More...

#include <distance_haversine.hpp>

Inheritance diagram for boost::geometry::strategy::distance::haversine< RadiusType, CalculationType >:

Classes
struct	calculation_type

Public Types
typedef RadiusType	radius_type

Public Member Functions
	haversine (RadiusType const &radius=1.0)
	Constructor. More...
template<typename Point1 , typename Point2 >
calculation_type< Point1, Point2 >::type	apply (Point1 const &p1, Point2 const &p2) const
	applies the distance calculation More...
RadiusType	radius () const
	access to radius value More...

Detailed Description

template<typename RadiusType, typename CalculationType = void>
class boost::geometry::strategy::distance::haversine< RadiusType, CalculationType >

Distance calculation for spherical coordinates on a perfect sphere using haversine.

Template Parameters

RadiusType
CalculationType

Author

Adapted from: http://williams.best.vwh.net/avform.htm

See also

http://en.wikipedia.org/wiki/Great-circle_distance

Note

(from Wiki:) The great circle distance d between two points with coordinates {lat1,lon1} and {lat2,lon2} is given by: d=acos(sin(lat1)*sin(lat2)+cos(lat1)*cos(lat2)*cos(lon1-lon2)) A mathematically equivalent formula, which is less subject to rounding error for short distances is: d=2*asin(sqrt((sin((lat1-lat2) / 2))^2

• cos(lat1)*cos(lat2)*(sin((lon1-lon2) / 2))^2))

{ [heading See also] [link geometry.reference.algorithms.distance.distance_3_with_strategy distance (with strategy)] }

Member Typedef Documentation

template<typename RadiusType, typename CalculationType = void>

typedef RadiusType boost::geometry::strategy::distance::haversine< RadiusType, CalculationType >::radius_type

Constructor & Destructor Documentation

template<typename RadiusType, typename CalculationType = void>

boost::geometry::strategy::distance::haversine< RadiusType, CalculationType >::haversine ( RadiusType const &  radius = 1.0 )

inline

Constructor.

Parameters

radius

radius of the sphere, defaults to 1.0 for the unit sphere

Member Function Documentation

template<typename RadiusType, typename CalculationType = void>

template<typename Point1 , typename Point2 >

calculation_type<Point1, Point2>::type boost::geometry::strategy::distance::haversine< RadiusType, CalculationType >::apply ( Point1 const &  p1, Point2 const &  p2  ) const

inline

applies the distance calculation

Returns

the calculated distance (including multiplying with radius)

Parameters

p1	first point
p2	second point

template<typename RadiusType, typename CalculationType = void>

RadiusType boost::geometry::strategy::distance::haversine< RadiusType, CalculationType >::radius ( ) const

inline

access to radius value

Returns

the radius

Referenced by boost::geometry::strategy::distance::services::get_comparable< haversine< RadiusType, CalculationType > >::apply().

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The documentation for this class was generated from the following file:

• boost_1_57_0/boost/geometry/strategies/spherical/distance_haversine.hpp