org.cts.op.projection

Class AlbersEqualArea

java.lang.Object

org.cts.IdentifiableComponent

org.cts.op.AbstractCoordinateOperation

org.cts.op.projection.Projection

org.cts.op.projection.AlbersEqualArea

All Implemented Interfaces:

Identifiable, CoordinateOperation

public class AlbersEqualArea
extends Projection

The Albers Equal Area Projection (AEA).

Author:

Jules Party

Nested Class Summary

Nested classes/interfaces inherited from class org.cts.op.projection.Projection

Projection.Orientation, Projection.Property, Projection.Surface

Field Summary

Fields

Modifier and Type	Field and Description
static Identifier	AEA The Identifier used for all Albers Equal Area projections.
protected double	C
protected double	FE
protected double	FN
protected double	lat0
protected double	lon0
protected double	n
protected double	rho0

Fields inherited from class org.cts.op.projection.Projection

DEFAULT_PARAMETERS

Fields inherited from class org.cts.op.AbstractCoordinateOperation

precision

Fields inherited from interface org.cts.Identifiable

DEFAULT, LOCAL, UNKNOWN

Constructor Summary

Constructors

Constructor and Description
AlbersEqualArea(Ellipsoid ellipsoid, Map<String,Measure> parameters) Create a new Albers Equal Area Projection corresponding to the Ellipsoid and the list of parameters given in argument and initialize common parameters lon0, lat0, FE, FN and other parameters useful for the projection.

Method Summary

Modifier and Type	Method and Description
Projection.Orientation	getOrientation() Return the Orientation of this Projection.
Projection.Property	getProperty() Return the Property of this Projection.
Projection.Surface	getSurface() Return the Surface type of this Projection.
Projection	inverse() Creates the inverse operation for Albers Equal Area Projection.
double[]	transform(double[] coord) Transform coord using the Albers Equal Area Projection.

Methods inherited from class org.cts.op.projection.Projection

equals, getAzimuth, getCentralMeridian, getDefaultParameters, getFalseEasting, getFalseNorthing, getLatitudeOfOrigin, getLatitudeOfTrueScale, getRectifiedGridAngle, getScaleFactor, getSemiMajorAxis, getSemiMinorAxis, getStandardParallel1, getStandardParallel2, hashCode, isDirect, toWKT

Methods inherited from class org.cts.op.AbstractCoordinateOperation

getPrecision, isIdentity

Methods inherited from class org.cts.IdentifiableComponent

addAlias, addRemark, getAliases, getAuthorityKey, getAuthorityName, getCode, getComponent, getIdentifier, getName, getRemarks, getShortName, setIdentifier, setRemarks, setShortName, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.cts.Identifiable

addAlias, addRemark, getAliases, getAuthorityKey, getAuthorityName, getCode, getName, getRemarks, getShortName, setRemarks, setShortName

Field Detail

AEA

public static final Identifier AEA

The Identifier used for all Albers Equal Area projections.

lat0

protected final double lat0

lon0

protected final double lon0

FE

protected final double FE

FN

protected final double FN

rho0

protected final double rho0

C

protected final double C

n

protected final double n

Constructor Detail

AlbersEqualArea

public AlbersEqualArea(Ellipsoid ellipsoid,
                       Map<String,Measure> parameters)

Create a new Albers Equal Area Projection corresponding to the Ellipsoid and the list of parameters given in argument and initialize common parameters lon0, lat0, FE, FN and other parameters useful for the projection.

Parameters:

ellipsoid - ellipsoid used to define the projection.

parameters - a map of useful parameters to define the projection.

Method Detail

getSurface

public Projection.Surface getSurface()

Return the Surface type of this Projection.

Specified by:

getSurface in class Projection

Returns:

getProperty

public Projection.Property getProperty()

Return the Property of this Projection.

Specified by:

getProperty in class Projection

Returns:

getOrientation

public Projection.Orientation getOrientation()

Return the Orientation of this Projection.

Specified by:

getOrientation in class Projection

Returns:

transform

public double[] transform(double[] coord)

Transform coord using the Albers Equal Area Projection. Input coord is supposed to be a geographic latitude / longitude coordinate in radians. Algorithm based on the OGP's Guidance Note Number 7 Part 2 :

Specified by:

transform in interface CoordinateOperation

Specified by:

transform in class AbstractCoordinateOperation

Parameters:

coord - coordinate to transform

Returns:

a double array containing the output coordinate

Throws:

CoordinateDimensionException - if coord length is not compatible with this CoordinateOperation.

inverse

public Projection inverse()

Creates the inverse operation for Albers Equal Area Projection. Input coord is supposed to be a projected easting / northing coordinate in meters. Algorithm based on the OGP's Guidance Note Number 7 Part 2 :

Specified by:

inverse in interface CoordinateOperation

Overrides:

inverse in class Projection