gridpp::KDTree Class Reference

#include <gridpp.h>

Public Member Functions
bool	convert_coordinates (const vec &lats, const vec &lons, vec &x_coords, vec &y_coords, vec &z_coords) const
	Convert lat/lons to 3D cartesian coordinates with the centre of the earth as the origin. More...
bool	convert_coordinates (float lat, float lon, float &x_coord, float &y_coord, float &z_coord) const
	Same as above, but convert a single lat/lon to 3D cartesian coordinates. More...
ivec	get_closest_neighbours (float lat, float lon, int num) const
	Find a set of nearest points. More...
CoordinateType	get_coordinate_type () const
vec	get_lats () const
vec	get_lons () const
int	get_nearest_neighbour (float lat, float lon) const
	Find single nearest points. More...
ivec	get_neighbours (float lat, float lon, float radius) const
	Find all points with a radius. More...
ivec	get_neighbours_with_distance (float lat, float lon, float radius, vec &distances) const
	Find all points with a radius. More...
int	get_num_neighbours (float lat, float lon, float radius) const
	Find the number of points within a radius. More...
	KDTree (vec lats, vec lons, CoordinateType type=Geodetic)
	KDTree (const KDTree &other)
	KDTree ()
KDTree &	operator= (KDTree other)
int	size () const

Static Public Member Functions
static float	calc_distance (float lat1, float lon1, float lat2, float lon2, CoordinateType type=Geodetic)
static float	calc_distance (float x0, float y0, float z0, float x1, float y1, float z1)
static float	calc_distance_fast (float lat1, float lon1, float lat2, float lon2, CoordinateType type=Geodetic)
static float	calc_distance_fast (const Point &p1, const Point &p2)
static float	deg2rad (float deg)
static float	rad2deg (float deg)

Protected Types
typedef boost::geometry::model::box< point >	box
typedef boost::geometry::model::point< float, 3, boost::geometry::cs::cartesian >	point
typedef std::pair< point, unsigned >	value

Protected Attributes
vec	mLats
vec	mLons
boost::geometry::index::rtree< value, boost::geometry::index::quadratic< 16 > >	mTree
CoordinateType	mType

Detailed Description

Helper class for Grid and Points.

Member Typedef Documentation

box

typedef boost::geometry::model::box<point> gridpp::KDTree::box

protected

point

typedef boost::geometry::model::point<float, 3, boost::geometry::cs::cartesian> gridpp::KDTree::point

protected

value

typedef std::pair<point, unsigned> gridpp::KDTree::value

protected

Constructor & Destructor Documentation

KDTree() [1/3]

gridpp::KDTree::KDTree	(	vec	lats,
		vec	lons,
		CoordinateType	type = Geodetic
	)

KDTree() [2/3]

gridpp::KDTree::KDTree

(

const KDTree &

other

)

KDTree() [3/3]

gridpp::KDTree::KDTree ( )

inline

Member Function Documentation

calc_distance() [1/2]

float gridpp::KDTree::calc_distance ( float  lat1, float  lon1, float  lat2, float  lon2, CoordinateType  type = Geodetic  )

static

calc_distance() [2/2]

float gridpp::KDTree::calc_distance ( float  x0, float  y0, float  z0, float  x1, float  y1, float  z1  )

static

calc_distance_fast() [1/2]

float gridpp::KDTree::calc_distance_fast ( float  lat1, float  lon1, float  lat2, float  lon2, CoordinateType  type = Geodetic  )

static

calc_distance_fast() [2/2]

float gridpp::KDTree::calc_distance_fast ( const Point &  p1, const Point &  p2  )

static

convert_coordinates() [1/2]

bool gridpp::KDTree::convert_coordinates	(	const vec &	lats,
		const vec &	lons,
		vec &	x_coords,
		vec &	y_coords,
		vec &	z_coords
	)		const

Convert lat/lons to 3D cartesian coordinates with the centre of the earth as the origin.

Parameters

lats	vector of latitudes [deg]
lons	vector of longitudes [deg]
x_coords	vector of x-coordinates [m]
y_coords	vector of y-coordinates [m]
z_coords	vector of z-coordinates [m]

convert_coordinates() [2/2]

bool gridpp::KDTree::convert_coordinates	(	float	lat,
		float	lon,
		float &	x_coord,
		float &	y_coord,
		float &	z_coord
	)		const

Same as above, but convert a single lat/lon to 3D cartesian coordinates.

Parameters

lat	latitude [deg]
lon	longitude [deg]
x_coord	x-coordinate [m]
y_coord	y-coordinate [m]
z_coord	z-coordinate [m]

deg2rad()

float gridpp::KDTree::deg2rad ( float  deg )

static

get_closest_neighbours()

ivec gridpp::KDTree::get_closest_neighbours	(	float	lat,
		float	lon,
		int	num
	)		const

Find a set of nearest points.

Parameters

lat	Latitude of lookup-point
lon	Longitude of lookup-point
num	Number of points to find

get_coordinate_type()

CoordinateType gridpp::KDTree::get_coordinate_type

(

)

const

get_lats()

vec gridpp::KDTree::get_lats

(

)

const

get_lons()

vec gridpp::KDTree::get_lons

(

)

const

get_nearest_neighbour()

int gridpp::KDTree::get_nearest_neighbour	(	float	lat,
		float	lon
	)		const

Find single nearest points.

Parameters

lat	Latitude of lookup-point
lon	Longitude of lookup-point

get_neighbours()

ivec gridpp::KDTree::get_neighbours	(	float	lat,
		float	lon,
		float	radius
	)		const

Find all points with a radius.

Parameters

lat	Latitude of lookup-point
lon	Longitude of lookup-point
radius	Lookup radius [m]

get_neighbours_with_distance()

ivec gridpp::KDTree::get_neighbours_with_distance	(	float	lat,
		float	lon,
		float	radius,
		vec &	distances
	)		const

Find all points with a radius.

Parameters

lat	Latitude of lookup-point
lon	Longitude of lookup-point
radius	Lookup radius [m]
distances	Vector to store separation distances [m]

get_num_neighbours()

int gridpp::KDTree::get_num_neighbours	(	float	lat,
		float	lon,
		float	radius
	)		const

Find the number of points within a radius.

Parameters

lat	Latitude of lookup-point
lon	Longitude of lookup-point
radius	Lookup radius [m]

operator=()

gridpp::KDTree & gridpp::KDTree::operator=

(

gridpp::KDTree

other

)

rad2deg()

float gridpp::KDTree::rad2deg ( float  deg )

static

size()

int gridpp::KDTree::size

(

)

const

Member Data Documentation

mLats

vec gridpp::KDTree::mLats

protected

mLons

vec gridpp::KDTree::mLons

protected

mTree

boost::geometry::index::rtree< value, boost::geometry::index::quadratic<16> > gridpp::KDTree::mTree

protected

mType

CoordinateType gridpp::KDTree::mType

protected

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

• /home/thomasn/repos/gridpplib/include/gridpp.h
• /home/thomasn/repos/gridpplib/src/api/kdtree.cpp