er.extensions.components
Class ERXGMapUtilities.Coordinate

java.lang.Object
  er.extensions.components.ERXGMapUtilities.Coordinate

Enclosing class:

ERXGMapUtilities

public static class ERXGMapUtilities.Coordinate
extends java.lang.Object

Field Summary

static char	UNIT_KILOMETERS
static char	UNIT_NAUTICAL_MILES
static char	UNIT_STATUTE_MILES

Constructor Summary

ERXGMapUtilities.Coordinate(double latitude, double longitude)

Method Summary

static double	distance(double lat1, double lon1, double lat2, double lon2, char unit) Calculate distance between two coordinates.
double	distanceTo(ERXGMapUtilities.Coordinate other, char unit)
double	latitude()
double	longitude()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

UNIT_STATUTE_MILES

public static final char UNIT_STATUTE_MILES

See Also:

Constant Field Values

UNIT_NAUTICAL_MILES

public static final char UNIT_NAUTICAL_MILES

See Also:

Constant Field Values

UNIT_KILOMETERS

public static final char UNIT_KILOMETERS

See Also:

Constant Field Values

Constructor Detail

ERXGMapUtilities.Coordinate

public ERXGMapUtilities.Coordinate(double latitude,
                                   double longitude)

Method Detail

latitude

public double latitude()

longitude

public double longitude()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

distanceTo

public double distanceTo(ERXGMapUtilities.Coordinate other,
                         char unit)

distance

public static double distance(double lat1,
                              double lon1,
                              double lat2,
                              double lon2,
                              char unit)

Calculate distance between two coordinates. South latitudes are negative, east longitudes are positive. Based on code from http://www.zipcodeworld.com/developers.htm

Parameters:

lat1 - Latitude of point 1 (in decimal degrees)

lon1 - Longitude of point 1 (in decimal degrees)

lat2 - Latitude of point 2 (in decimal degrees)

lon2 - Longitude of point 2 (in decimal degrees)

unit - one of UNIT_STATUTE_MILES, UNIT_NAUTICAL_MILES or UNIT_KILOMETERS

Returns:

distance between the two coordinates