Package org.locationtech.proj4j.proj
Class AlbersProjection
java.lang.Object
org.locationtech.proj4j.proj.Projection
org.locationtech.proj4j.proj.AlbersProjection
- All Implemented Interfaces:
Serializable
,Cloneable
- Direct Known Subclasses:
LambertEqualAreaConicProjection
- See Also:
-
Field Summary
FieldsModifier and TypeFieldDescriptionprivate double
private double
private double
private double[]
private static final double
private static final double
private double
private static final int
private double
private double
private double
private double
private static final double
private static final double
Fields inherited from class org.locationtech.proj4j.proj.Projection
a, alpha, DTR, e, ellipsoid, 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 -
Method Summary
Modifier and TypeMethodDescriptionint
Returns the ESPG code for this projection, or 0 if unknown.boolean
Tests whether this projection has an inverse.void
Initialize the projection.boolean
Returns true if this projection is equal areaprivate static double
phi1_
(double qs, double Te, double Tone_es) 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, 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
-
Field Details
-
EPS10
private static final double EPS10- See Also:
-
TOL7
private static final double TOL7- See Also:
-
ec
private double ec -
n
private double n -
c
private double c -
dd
private double dd -
n2
private double n2 -
rho0
private double rho0 -
phi1
private double phi1 -
phi2
private double phi2 -
en
private double[] en -
N_ITER
private static final int N_ITER- See Also:
-
EPSILON
private static final double EPSILON- See Also:
-
TOL
private static final double TOL- See Also:
-
-
Constructor Details
-
AlbersProjection
public AlbersProjection()
-
-
Method Details
-
phi1_
private static double phi1_(double qs, double Te, double Tone_es) -
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
-
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
-
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 classProjection
-
isEqualArea
public boolean isEqualArea()Returns true if this projection is equal area- Overrides:
isEqualArea
in classProjection
- 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 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
-
getEPSGCode
public int getEPSGCode()Returns the ESPG code for this projection, or 0 if unknown.- Overrides:
getEPSGCode
in classProjection
-
toString
- Overrides:
toString
in classProjection
-