xsltExtension

Class LatitudeLongitudeConversion

java.lang.Object

xsltExtension.LatitudeLongitudeConversion

public class LatitudeLongitudeConversion
extends Object

Static methods to extend XSLT to convert between latitude / longitude and Cartesian coordinate (x north, y east) positions TODO: replace functionality with GeodeticToUTMConverter for more precise Cartesian coordinates based on a WGS-84 ellipsoid

Since:

16 JUL 2004

Version:

$Id: LatitudeLongitudeConversion.java 8086 2012-07-16 23:46:35Z tnorbraten $

Author:

dtdavis

Constructor Summary

Constructors

Constructor and Description
LatitudeLongitudeConversion()

Method Summary

Methods

Modifier and Type	Method and Description
static double	direction(double lat1, double lon1, double lat2, double lon2) Method used to compute the linear distance between two points specified by latitude and longitude
static double	distance(double lat1, double lon1, double lat2, double lon2) Method used to compute the linear distance between two points specified by latitude and longitude
static double	getLatitudeFromX(double geoOriginLatitude, double x) Method used to compute the Cartesian X coordinate for a specified latitude Computed as the arc distance between the latitude and the geo origin latitude NOTE: This is only an approximation based on a flat earth model and is valid only for locations relatively close to the geographic origin
static double	getLongitudeFromY(double geoOriginLongitude, double latitude, double y) Method used to compute the Cartesian Y coordinate for a specified longitude Computed as the arc distance between the longitude and the geo origin longitude at the specified latitude NOTE: This is only an approximation based on a flat earth model and is valid only for locations relatively close to the geographic origin
static double	getXFromLatitude(double geoOriginLatitude, double latitude) Method used to compute the Cartesian X coordinate for a specified latitude Computed as the arc distance between the latitude and the geo origin latitude NOTE: This is only an approximation based on a flat earth model and is valid only for locations relatively close to the geographic origin
static double	getYFromLongitude(double geoOriginLongitude, double latitude, double longitude) Method used to compute the Cartesian Y coordinate for a specified longitude Computed as the arc distance between the longitude and the geo origin longitude at the specified latitude NOTE: This is only an approximation based on a flat earth model and is valid only for locations relatively close to the geographic origin

Methods inherited from class java.lang.Object

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

Constructor Detail

LatitudeLongitudeConversion

public LatitudeLongitudeConversion()

Method Detail

getXFromLatitude

public static double getXFromLatitude(double geoOriginLatitude,
                      double latitude)

Method used to compute the Cartesian X coordinate for a specified latitude Computed as the arc distance between the latitude and the geo origin latitude NOTE: This is only an approximation based on a flat earth model and is valid only for locations relatively close to the geographic origin

Parameters:

geoOriginLatitude - latitude corresponding to an x value of 0

latitude - latitude whose x coordinate is to be computed

getLatitudeFromX

public static double getLatitudeFromX(double geoOriginLatitude,
                      double x)

Method used to compute the Cartesian X coordinate for a specified latitude Computed as the arc distance between the latitude and the geo origin latitude NOTE: This is only an approximation based on a flat earth model and is valid only for locations relatively close to the geographic origin

Parameters:

geoOriginLatitude - latitude corresponding to an x value of 0

x - x coordinate whose latitude is to be computed

getYFromLongitude

public static double getYFromLongitude(double geoOriginLongitude,
                       double latitude,
                       double longitude)

Method used to compute the Cartesian Y coordinate for a specified longitude Computed as the arc distance between the longitude and the geo origin longitude at the specified latitude NOTE: This is only an approximation based on a flat earth model and is valid only for locations relatively close to the geographic origin

Parameters:

geoOriginLongitude - longitude corresponding to a y value of 0

latitude - latitude at which the longitude y value is to be computed

longitude - longitude whose y coordinate is to be computed

getLongitudeFromY

public static double getLongitudeFromY(double geoOriginLongitude,
                       double latitude,
                       double y)

Method used to compute the Cartesian Y coordinate for a specified longitude Computed as the arc distance between the longitude and the geo origin longitude at the specified latitude NOTE: This is only an approximation based on a flat earth model and is valid only for locations relatively close to the geographic origin

Parameters:

geoOriginLongitude - longitude corresponding to a y value of 0

latitude - latitude at which the longitude y value is to be computed

y - y coordinate whose longitude is to be computed

distance

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

Method used to compute the linear distance between two points specified by latitude and longitude

Parameters:

lat1 -

lon1 -

lat2 -

lon2 -

Returns:

linear distance from lat1/lon1 to lat2/lon2

direction

public static double direction(double lat1,
               double lon1,
               double lat2,
               double lon2)

Method used to compute the linear distance between two points specified by latitude and longitude

Parameters:

lat1 -

lon1 -

lat2 -

lon2 -

Returns:

heading (degrees) from lat1/lon1 to lat2/lon2