org.geotools.referencing.operation.projection
Class LambertAzimuthalEqualArea

Object
  extended by Formattable
      extended by AbstractMathTransform
          extended by MapProjection
              extended by LambertAzimuthalEqualArea
All Implemented Interfaces:
Serializable, MathTransform, MathTransform2D

public class LambertAzimuthalEqualArea
extends MapProjection

Lambert Azimuthal Equal Area (EPSG code 9820).

References:

Since:
2.4
Author:
Gerald Evenden (for original code in Proj4), Beate Stollberg, Martin Desruisseaux
See Also:
Lambert Azimuthal Equal-Area Projection on MathWorld, "Lambert_Azimuthal_Equal_Area" on RemoteSensing.org, Serialized Form
Module:

Nested Class Summary
static class LambertAzimuthalEqualArea.Provider
          The math transform provider for an Lambert Equal Area projection (EPSG code 9820).
 
Nested classes/interfaces inherited from class MapProjection
MapProjection.AbstractProvider
 
Field Summary
 
Fields inherited from class MapProjection
centralMeridian, excentricity, excentricitySquared, falseEasting, falseNorthing, globalScale, isSpherical, latitudeOfOrigin, LOGGER, scaleFactor, semiMajor, semiMinor
 
Fields inherited from class Formattable
SINGLE_LINE
 
Constructor Summary
protected LambertAzimuthalEqualArea(ParameterValueGroup parameters)
          Constructs a new map projection from the supplied parameters.
 
Method Summary
 ParameterDescriptorGroup getParameterDescriptors()
          Returns the parameter descriptors for this map projection.
 ParameterValueGroup getParameterValues()
          Returns the parameter values for this map projection.
protected  Point2D inverseTransformNormalized(double x, double y, Point2D ptDst)
          Transforms the specified (x,y) coordinate and stores the result in ptDst.
protected  Point2D transformNormalized(double lambda, double phi, Point2D ptDst)
          Transforms the specified (λ,φ) coordinates (units in radians) and stores the result in ptDst (linear distance on a unit sphere).
 
Methods inherited from class MapProjection
equals, getSourceDimensions, getTargetDimensions, getToleranceForAssertions, hashCode, inverse, resetWarnings, transform, transform, transform
 
Methods inherited from class AbstractMathTransform
createTransformedShape, derivative, derivative, ensureNonNull, formatWKT, getName, isIdentity, needCopy, rollLongitude, transform, transform, transform
 
Methods inherited from class Formattable
toString, toWKT, toWKT, toWKT
 
Methods inherited from class Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface MathTransform2D
createTransformedShape, derivative
 
Methods inherited from interface MathTransform
derivative, isIdentity, toWKT, transform
 

Constructor Detail

LambertAzimuthalEqualArea

protected LambertAzimuthalEqualArea(ParameterValueGroup parameters)
                             throws ParameterNotFoundException
Constructs a new map projection from the supplied parameters.

Parameters:
parameters - The parameter values in standard units.
Throws:
ParameterNotFoundException - if a mandatory parameter is missing.
Method Detail

getParameterDescriptors

public ParameterDescriptorGroup getParameterDescriptors()
Returns the parameter descriptors for this map projection. This is used for a providing a default implementation of MapProjection.getParameterValues(), as well as arguments checking.

Specified by:
getParameterDescriptors in class MapProjection
Returns:
The parameter descriptors for this math transform, or null.
See Also:
OperationMethod.getParameters()

getParameterValues

public ParameterValueGroup getParameterValues()
Returns the parameter values for this map projection.

Overrides:
getParameterValues in class MapProjection
Returns:
A copy of the parameter values for this map projection.
See Also:
Operation.getParameterValues()

transformNormalized

protected Point2D transformNormalized(double lambda,
                                      double phi,
                                      Point2D ptDst)
                               throws ProjectionException
Transforms the specified (λ,φ) coordinates (units in radians) and stores the result in ptDst (linear distance on a unit sphere).

Specified by:
transformNormalized in class MapProjection
Parameters:
lambda - The longitude of the coordinate, in radians.
phi - The latitude of the coordinate, in radians.
ptDst - the specified coordinate point that stores the result of transforming ptSrc, or null. Ordinates will be in a dimensionless unit, as a linear distance on a unit sphere or ellipse.
Returns:
the coordinate point after transforming (lambda, phi) and storing the result in ptDst.
Throws:
ProjectionException - if the point can't be transformed.

inverseTransformNormalized

protected Point2D inverseTransformNormalized(double x,
                                             double y,
                                             Point2D ptDst)
                                      throws ProjectionException
Transforms the specified (x,y) coordinate and stores the result in ptDst.

Specified by:
inverseTransformNormalized in class MapProjection
Parameters:
x - The easting of the coordinate, linear distance on a unit sphere or ellipse.
y - The northing of the coordinate, linear distance on a unit sphere or ellipse.
ptDst - the specified coordinate point that stores the result of transforming ptSrc, or null. Ordinates will be in radians.
Returns:
the coordinate point after transforming x, y and storing the result in ptDst.
Throws:
ProjectionException - if the point can't be transformed.


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