org.openstreetmap.josm.data.projection.proj
Class SwissObliqueMercator

java.lang.Object
  org.openstreetmap.josm.data.projection.proj.SwissObliqueMercator

All Implemented Interfaces:

Proj

public class SwissObliqueMercator
extends java.lang.Object
implements Proj

Projection for the SwissGrid CH1903 / L03, see http://de.wikipedia.org/wiki/Swiss_Grid. Calculations are based on formula from http://www.swisstopo.admin.ch/internet/swisstopo/en/home/topics/survey/sys/refsys/switzerland.parsysrelated1.37696.downloadList.12749.DownloadFile.tmp/ch1903wgs84en.pdf August 2010 update to this formula (rigorous formulas) http://www.swisstopo.admin.ch/internet/swisstopo/en/home/topics/survey/sys/refsys/switzerland.parsysrelated1.37696.downloadList.97912.DownloadFile.tmp/swissprojectionen.pdf

Field Summary

private double	alpha
private double	b0
private Ellipsoid	ellps
private static double	EPSILON
private double	K
private double	kR

Constructor Summary

SwissObliqueMercator()

Method Summary

java.lang.String	getName() A Human readable name of this projection.
java.lang.String	getProj4Id() The Proj.4 identifier.
private void	initialize(double lat_0)
void	initialize(ProjParameters params) Initialize the projection using the provided parameters.
double[]	invproject(double y, double x) Convert east/north to lat/lon.
double[]	project(double phi, double lambda) Convert lat/lon to east/north.

Methods inherited from class java.lang.Object

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

Field Detail

ellps

private Ellipsoid ellps

kR

private double kR

alpha

private double alpha

b0

private double b0

K

private double K

EPSILON

private static final double EPSILON

See Also:

Constant Field Values

Constructor Detail

SwissObliqueMercator

public SwissObliqueMercator()

Method Detail

initialize

public void initialize(ProjParameters params)
                throws ProjectionConfigurationException

Description copied from interface: Proj

Initialize the projection using the provided parameters.

Specified by:

initialize in interface Proj

Throws:

ProjectionConfigurationException - in case parameters are not suitable

initialize

private void initialize(double lat_0)

getName

public java.lang.String getName()

Description copied from interface: Proj

A Human readable name of this projection.

Specified by:

getName in interface Proj

getProj4Id

public java.lang.String getProj4Id()

Description copied from interface: Proj

The Proj.4 identifier. (as reported by cs2cs -lp) If no id exists, return null.

Specified by:

getProj4Id in interface Proj

project

public double[] project(double phi,
                        double lambda)

Description copied from interface: Proj

Convert lat/lon to east/north.

Specified by:

project in interface Proj

Parameters:

phi - the latitude in radians

lambda - the longitude in radians

Returns:

array of length 2, containing east and north value in meters, divided by the semi major axis of the ellipsoid.

invproject

public double[] invproject(double y,
                           double x)

Description copied from interface: Proj

Convert east/north to lat/lon.

Specified by:

invproject in interface Proj

Parameters:

y - east value in meters, divided by the semi major axis of the ellipsoid

x - north value in meters, divided by the semi major axis of the ellipsoid

Returns:

array of length 2, containing lat and lon in radians.