Class LambertAzimuthalEqualArea

All Implemented Interfaces:
Serializable, MathTransform, MathTransform2D

public class LambertAzimuthalEqualArea extends MapProjection
Lambert Azimuthal Equal Area (EPSG code 9820).

References:

  • A. Annoni, C. Luzet, E.Gubler and J. Ihde - Map Projections for Europe
  • John P. Snyder (Map Projections - A Working Manual, U.S. Geological Survey Professional Paper 1395)
Since:
2.4
Author:
Gerald Evenden (for original code in Proj4), Beate Stollberg, Martin Desruisseaux
See Also:
  • Constructor Details

  • Method Details

    • 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:
    • 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:
    • 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.