Class RobinsonProjection

java.lang.Object

org.locationtech.proj4j.proj.Projection

org.locationtech.proj4j.proj.CylindricalProjection

org.locationtech.proj4j.proj.PseudoCylindricalProjection

org.locationtech.proj4j.proj.RobinsonProjection

All Implemented Interfaces:

Serializable, Cloneable

public class RobinsonProjection
extends PseudoCylindricalProjection

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private static final double	C1
private static final double	EPS
private static final double	FXC
private static final double	FYC
private static final int	MAX_ITER
private final int	NODES
private static final double	ONEEPS
private static final double	RC1
private static final double[][]	X
private static final double[][]	Y

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
RobinsonProjection()

Method Summary

Modifier and Type	Method	Description
private double	DV(double[] C, double z)
boolean	hasInverse()	Tests whether this projection has an inverse.
ProjCoordinate	project(double lplam, double lpphi, ProjCoordinate xy)	Computes the projection of a given point (i.e.
ProjCoordinate	projectInverse(double x, double y, ProjCoordinate lp)	Computes the inverse projection of a given point (i.e.
String	toString()
private double	V(double[] C, double z)

Methods inherited from class PseudoCylindricalProjection

isRectilinear

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, initialize, inside, inverseProject, inverseProjectRadians, isConformal, isEqualArea, isGeographic, 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

X

private static final double[][] X

Y

private static final double[][] Y

NODES

private final int NODES

See Also:

• Constant Field Values

FXC

private static final double FXC

See Also:

• Constant Field Values

FYC

private static final double FYC

See Also:

• Constant Field Values

C1

private static final double C1

See Also:

• Constant Field Values

RC1

private static final double RC1

See Also:

• Constant Field Values

ONEEPS

private static final double ONEEPS

See Also:

• Constant Field Values

EPS

private static final double EPS

See Also:

• Constant Field Values

MAX_ITER

private static final int MAX_ITER

See Also:

• Constant Field Values

Constructor Details

RobinsonProjection

public RobinsonProjection()

Method Details

V

private double V(double[] C,
 double z)

DV

private double DV(double[] C,
 double z)

project

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

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)

xy - the projected coordinate (in coordinate system units)

Returns:

the target coordinate

projectInverse

public ProjCoordinate projectInverse(double x,
 double y,
 ProjCoordinate lp)

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:

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

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

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

Returns:

the target coordinate

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 PseudoCylindricalProjection