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 Wikipedia article.
Calculations were originally based on simple formula.
August 2010 update to this formula (rigorous formulas).

Field Summary

Fields

Modifier and Type	Field and Description
private double	alpha
private double	b0
private Ellipsoid	ellps
private static double	EPSILON
private double	K
private double	kR

Constructor Summary

Constructors

Constructor and Description
SwissObliqueMercator()

Method Summary

Modifier and Type	Method and Description
java.lang.String	getName() Replies a human readable name of this projection.
java.lang.String	getProj4Id() Replies 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

Parameters:

params - The projection parameters

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

Replies a human readable name of this projection.

Specified by:

getName in interface Proj

Returns:

The projection name. must not be null.

getProj4Id

public java.lang.String getProj4Id()

Description copied from interface: Proj

Replies the Proj.4 identifier.

Specified by:

getProj4Id in interface Proj

Returns:

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

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.