org.openstreetmap.josm.data.projection.proj

Class LambertConformalConic

java.lang.Object

org.openstreetmap.josm.data.projection.proj.LambertConformalConic

All Implemented Interfaces:

Proj

public class LambertConformalConic
extends java.lang.Object
implements Proj

Implementation of the Lambert Conformal Conic projection.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LambertConformalConic.Parameters
static class	LambertConformalConic.Parameters1SP
static class	LambertConformalConic.Parameters2SP

Field Summary

Fields

Modifier and Type	Field and Description
protected double	e
protected Ellipsoid	ellps
protected static double	epsilon precision in iterative schema
protected double	F projection factor
protected double	n projection exponent
private LambertConformalConic.Parameters	params
protected double	r0 radius of the parallel of latitude of the false origin (2SP) or at natural origin (1SP)

Constructor Summary

Constructors

Constructor and Description
LambertConformalConic()

Method Summary

Modifier and Type	Method and Description
java.lang.String	getName() Replies a human readable name of this projection.
LambertConformalConic.Parameters	getParameters()
java.lang.String	getProj4Id() Replies the Proj.4 identifier.
void	initialize(ProjParameters params) Initialize the projection using the provided parameters.
private void	initialize1SP(double lat_0) Initialize for LCC with 1 standard parallel.
private void	initialize2SP(double lat_0, double lat_1, double lat_2) Initialize for LCC with 2 standard parallels.
double[]	invproject(double east, double north) Convert east/north to lat/lon.
protected double	m(double lat_rad) auxiliary function m
double[]	project(double phi, double lambda) Convert lat/lon to east/north.
protected double	t(double lat_rad) auxiliary function t

Methods inherited from class java.lang.Object

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

Field Detail

ellps

protected Ellipsoid ellps

e

protected double e

params

private LambertConformalConic.Parameters params

n

protected double n

projection exponent

F

protected double F

projection factor

r0

protected double r0

radius of the parallel of latitude of the false origin (2SP) or at natural origin (1SP)

epsilon

protected static final double epsilon

precision in iterative schema

See Also:

Constant Field Values

Constructor Detail

LambertConformalConic

public LambertConformalConic()

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

initialize2SP

private void initialize2SP(double lat_0,
                           double lat_1,
                           double lat_2)

Initialize for LCC with 2 standard parallels.

Parameters:

lat_0 - latitude of false origin (in degrees)

lat_1 - latitude of first standard parallel (in degrees)

lat_2 - latitude of second standard parallel (in degrees)

initialize1SP

private void initialize1SP(double lat_0)

Initialize for LCC with 1 standard parallel.

Parameters:

lat_0 - latitude of natural origin (in degrees)

t

protected double t(double lat_rad)

auxiliary function t

m

protected double m(double lat_rad)

auxiliary function m

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 east,
                           double north)

Description copied from interface: Proj

Convert east/north to lat/lon.

Specified by:

invproject in interface Proj

Parameters:

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

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

Returns:

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

getParameters

public final LambertConformalConic.Parameters getParameters()