Package org.locationtech.proj4j.proj
Class Eckert4Projection
java.lang.Object
org.locationtech.proj4j.proj.Projection
org.locationtech.proj4j.proj.Eckert4Projection
- All Implemented Interfaces:
Serializable
,Cloneable
- See Also:
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate static final double
private static final double
private static final double
private static final double
private final int
private static final double
private static final double
Fields inherited from class org.locationtech.proj4j.proj.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
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionboolean
Tests whether this projection has an inverse.boolean
Tests whether this projection is equal-area An equal-area projection preserves relative sizes of projected areas.project
(double lplam, double lpphi, ProjCoordinate out) Computes the projection of a given point (i.e.projectInverse
(double xyx, double xyy, ProjCoordinate out) Computes the inverse projection of a given point (i.e.toString()
Methods inherited from class org.locationtech.proj4j.proj.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, 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
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Field Details
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C_x
private static final double C_x- See Also:
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C_y
private static final double C_y- See Also:
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RC_y
private static final double RC_y- See Also:
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C_p
private static final double C_p- See Also:
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RC_p
private static final double RC_p- See Also:
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EPS
private static final double EPS- See Also:
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NITER
private final int NITER- See Also:
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Constructor Details
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Eckert4Projection
public Eckert4Projection()
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Method Details
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project
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 classProjection
- 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
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projectInverse
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 classProjection
- 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
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hasInverse
public boolean hasInverse()Description copied from class:Projection
Tests whether this projection has an inverse. If this method returns true then theProjection.inverseProject(ProjCoordinate, ProjCoordinate)
andProjection.inverseProjectRadians(ProjCoordinate, ProjCoordinate)
methods will return meaningful results.- Overrides:
hasInverse
in classProjection
- Returns:
- true if this projection has an inverse
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isEqualArea
public boolean isEqualArea()Description copied from class:Projection
Tests whether this projection is equal-area An equal-area projection preserves relative sizes of projected areas.- Overrides:
isEqualArea
in classProjection
- Returns:
- true if this projection is equal-area
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toString
- Overrides:
toString
in classProjection
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