Class LambertAzimuthalEqualAreaProjection

java.lang.Object

org.locationtech.proj4j.proj.Projection

org.locationtech.proj4j.proj.LambertAzimuthalEqualAreaProjection

All Implemented Interfaces:

Serializable, Cloneable

public class LambertAzimuthalEqualAreaProjection
extends Projection

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private double[]	apa
private double	cosb1
private double	cosph0
private double	dd
private static final int	EQUIT
private double	mmf
private int	mode
private static final int	N_POLE
private static final int	OBLIQ
private double	phi0
private double	qp
private double	rq
private static final int	S_POLE
private double	sinb1
private double	sinph0
private double	xmf
private double	ymf

Fields inherited from class Projection

a, alpha, DTR, e, ellipsoid, EPS10, es, falseEasting, falseNorthing, fromMetres, geocentric, lonc, maxLatitude, maxLongitude, minLatitude, minLongitude, name, one_es, projectionLatitude, projectionLatitude1, projectionLatitude2, projectionLongitude, rone_es, RTD, scaleFactor, spherical, totalScale, trueScaleLatitude, unit

Constructor Summary

Constructors

Constructor	Description
LambertAzimuthalEqualAreaProjection()
LambertAzimuthalEqualAreaProjection(boolean south)

Method Summary

Modifier and Type	Method	Description
boolean	hasInverse()	Tests whether this projection has an inverse.
void	initialize()	Initialize the projection.
boolean	isEqualArea()	Returns true if this projection is equal area
ProjCoordinate	project(double lplam, double lpphi, ProjCoordinate out)	Computes the projection of a given point (i.e.
void	project_e(double lplam, double lpphi, ProjCoordinate out)
void	project_s(double lplam, double lpphi, ProjCoordinate out)
ProjCoordinate	projectInverse(double xyx, double xyy, ProjCoordinate out)	Computes the inverse projection of a given point (i.e.
void	projectInverse_e(double xyx, double xyy, ProjCoordinate out)
void	projectInverse_s(double xyx, double xyy, ProjCoordinate out)
String	toString()

Methods inherited from class Projection

clone, equals, getAlpha, getAxisOrder, getEllipsoid, getEPSGCode, getEquatorRadius, getFalseEasting, getFalseNorthing, getFromMetres, getHeightOfOrbit, getLonC, getMaxLatitude, getMaxLatitudeDegrees, getMaxLongitude, getMaxLongitudeDegrees, getMinLatitude, getMinLatitudeDegrees, getMinLongitude, getMinLongitudeDegrees, getName, getPrimeMeridian, getPROJ4Description, getProjectionLatitude, getProjectionLatitude1, getProjectionLatitude1Degrees, getProjectionLatitude2, getProjectionLatitude2Degrees, getProjectionLatitudeDegrees, getProjectionLongitude, getProjectionLongitudeDegrees, getScaleFactor, getSouthernHemisphere, getTrueScaleLatitude, getTrueScaleLatitudeDegrees, getUnits, hashCode, inside, inverseProject, inverseProjectRadians, isConformal, isGeographic, isRectilinear, normalizeLongitude, normalizeLongitudeRadians, parallelsAreParallel, project, projectRadians, setAlpha, setAlphaDegrees, setAxisOrder, setEllipsoid, setFalseEasting, setFalseNorthing, setFromMetres, setGamma, setGammaDegrees, setHeightOfOrbit, setLonC, setLonCDegrees, setMaxLatitude, setMaxLongitude, setMaxLongitudeDegrees, setMinLatitude, setMinLongitude, setMinLongitudeDegrees, setName, setNoUoff, setPrimeMeridian, setProjectionLatitude, setProjectionLatitude1, setProjectionLatitude1Degrees, setProjectionLatitude2, setProjectionLatitude2Degrees, setProjectionLatitudeDegrees, setProjectionLongitude, setProjectionLongitudeDegrees, setRadius, setScaleFactor, setSouthernHemisphere, setTrueScaleLatitude, setTrueScaleLatitudeDegrees, setUnits

Methods inherited from class Object

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

Field Details

N_POLE

private static final int N_POLE

See Also:

• Constant Field Values

S_POLE

private static final int S_POLE

See Also:

• Constant Field Values

EQUIT

private static final int EQUIT

See Also:

• Constant Field Values

OBLIQ

private static final int OBLIQ

See Also:

• Constant Field Values

mode

private int mode

phi0

private double phi0

sinb1

private double sinb1

cosb1

private double cosb1

xmf

private double xmf

ymf

private double ymf

mmf

private double mmf

qp

private double qp

dd

private double dd

rq

private double rq

apa

private double[] apa

sinph0

private double sinph0

cosph0

private double cosph0

Constructor Details

LambertAzimuthalEqualAreaProjection

public LambertAzimuthalEqualAreaProjection()

LambertAzimuthalEqualAreaProjection

public LambertAzimuthalEqualAreaProjection(boolean south)

Method Details

initialize

public void initialize()

Description copied from class: Projection

Initialize the projection. This should be called after setting parameters and before using the projection. This is for performance reasons as initialization may be expensive.

Overrides:

initialize in class Projection

project

public ProjCoordinate project(double lplam,
 double lpphi,
 ProjCoordinate out)

Description copied from class: Projection

Computes the projection of a given point (i.e. from geographics to projection space). This should be overridden for all projections.

Overrides:

project in class Projection

Parameters:

lplam - the geographic x ordinate (in radians)

lpphi - the geographic y ordinatee (in radians)

out - the projected coordinate (in coordinate system units)

Returns:

the target coordinate

project_s

public void project_s(double lplam,
 double lpphi,
 ProjCoordinate out)

project_e

public void project_e(double lplam,
 double lpphi,
 ProjCoordinate out)

projectInverse

public ProjCoordinate projectInverse(double xyx,
 double xyy,
 ProjCoordinate out)

Description copied from class: Projection

Computes the inverse projection of a given point (i.e. from projection space to geographics). This should be overridden for all projections.

Overrides:

projectInverse in class Projection

Parameters:

xyx - the projected x ordinate (in coordinate system units)

xyy - the projected y ordinate (in coordinate system units)

out - the inverse-projected geographic coordinate (in radians)

Returns:

the target coordinate

projectInverse_s

public void projectInverse_s(double xyx,
 double xyy,
 ProjCoordinate out)

projectInverse_e

public void projectInverse_e(double xyx,
 double xyy,
 ProjCoordinate out)

isEqualArea

public boolean isEqualArea()

Returns true if this projection is equal area

Overrides:

isEqualArea in class Projection

Returns:

true if this projection is equal-area

hasInverse

public boolean hasInverse()

Description copied from class: Projection

Tests whether this projection has an inverse. If this method returns true then the Projection.inverseProject(ProjCoordinate, ProjCoordinate) and Projection.inverseProjectRadians(ProjCoordinate, ProjCoordinate) methods will return meaningful results.

Overrides:

hasInverse in class Projection

Returns:

true if this projection has an inverse

toString

public String toString()

Overrides:

toString in class Projection