org.deegree.crs.projections.conic
Class LambertConformalConic

java.lang.Object
  org.deegree.crs.Identifiable
      org.deegree.crs.projections.Projection
          org.deegree.crs.projections.conic.ConicProjection
              org.deegree.crs.projections.conic.LambertConformalConic

All Implemented Interfaces:

java.io.Serializable

public class LambertConformalConic
extends ConicProjection

The LambertConformalConic projection has following properties (Snyder p. 104)

• Conic
• Conformal
• Parallels are unequally spaced arcs of concentric circles, more closely spaced near the center of the map
• Meridians are equally spaced radii of the same circles, thereby cutting paralles at right angles.
• Scale is true along two standard parallels, normally or along just one.
• The Pole in the same hemisphere as the standard parallels is a point; other pole is at infinity
• Used for maps of countries and regions with predominant east-west expanse.
• Presented by Lambert in 1772.

from: http://lists.maptools.org/pipermail/proj/2003-January/000592.html For east-west regions, the Lambert Conformal Conic is slightly better than the Transverse Mercator because of the ability to go farther in an east-west direction and still be able to have "round-trip" transformation accuracy. Geodetically speaking, it is NOT as good as the transverse Mercator.

It is known to be used by following epsg transformations:

• EPSG:3034

Version:

$Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18 Jun 2009) $

Author:

Rutger Bezema, last edited by: $Author: mschneider $

See Also:

Serialized Form

Constructor Summary

LambertConformalConic(double firstParallelLatitude, double secondParallelLatitude, GeographicCRS geographicCRS, double falseNorthing, double falseEasting, javax.vecmath.Point2d naturalOrigin, Unit units)
Creates a Lambert Conformal projection with a intersecting cone at the given parallel latitudes. and a scale of 1.

LambertConformalConic(double firstParallelLatitude, double secondParallelLatitude, GeographicCRS geographicCRS, double falseNorthing, double falseEasting, javax.vecmath.Point2d naturalOrigin, Unit units, double scale)

LambertConformalConic(double firstParallelLatitude, double secondParallelLatitude, GeographicCRS geographicCRS, double falseNorthing, double falseEasting, javax.vecmath.Point2d naturalOrigin, Unit units, double scale, Identifiable id)

LambertConformalConic(double firstParallelLatitude, double secondParallelLatitude, GeographicCRS geographicCRS, double falseNorthing, double falseEasting, javax.vecmath.Point2d naturalOrigin, Unit units, Identifiable id)
Creates a Lambert Conformal projection with a intersecting cone at the given parallel latitudes. and a scale of 1.

LambertConformalConic(GeographicCRS geographicCRS, double falseNorthing, double falseEasting, javax.vecmath.Point2d naturalOrigin, Unit units)
Creates a Lambert Conformal projection with a tangential cone at the naturalOrigin.y's latitude.

LambertConformalConic(GeographicCRS geographicCRS, double falseNorthing, double falseEasting, javax.vecmath.Point2d naturalOrigin, Unit units, double scale)
Creates a Lambert Conformal projection with a tangential cone at the naturalOrigin.y's latitude.

LambertConformalConic(GeographicCRS geographicCRS, double falseNorthing, double falseEasting, javax.vecmath.Point2d naturalOrigin, Unit units, double scale, Identifiable id)
Creates a Lambert Conformal projection with a tangential cone at the naturalOrigin.y's latitude.

LambertConformalConic(GeographicCRS geographicCRS, double falseNorthing, double falseEasting, javax.vecmath.Point2d naturalOrigin, Unit units, Identifiable id)
Creates a Lambert Conformal projection with a tangential cone at the naturalOrigin.y's latitude.

Method Summary

javax.vecmath.Point2d	doInverseProjection(double x, double y) Do an inverse projection from projected (map) coordinates to geographic coordinates.
javax.vecmath.Point2d	doProjection(double lambda, double phi) The actual transform method doing a projection from geographic coordinates to map coordinates.
boolean	equals(java.lang.Object other)
java.lang.String	getImplementationName()

Methods inherited from class org.deegree.crs.projections.conic.ConicProjection

getFirstParallelLatitude, getSecondParallelLatitude, hashCode

Methods inherited from class org.deegree.crs.projections.Projection

getCosphi0, getDatum, getEccentricity, getEllipsoid, getFalseEasting, getFalseNorthing, getGeographicCRS, getNaturalOrigin, getPrimeMeridian, getProjectionLatitude, getProjectionLongitude, getScale, getScaleFactor, getSemiMajorAxis, getSemiMinorAxis, getSinphi0, getSquaredEccentricity, getUnits, isConformal, isEqualArea, isSpherical, setFalseEasting, setScale, toString

Methods inherited from class org.deegree.crs.Identifiable

checkForNullObject, checkForNullObject, checkForNullObject, getAreaOfUse, getAreaOfUseBBox, getAreasOfUse, getDescription, getDescriptions, getIdAndName, getIdentifier, getIdentifiers, getName, getNames, getVersion, getVersions, hasID

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

LambertConformalConic

public LambertConformalConic(double firstParallelLatitude,
                             double secondParallelLatitude,
                             GeographicCRS geographicCRS,
                             double falseNorthing,
                             double falseEasting,
                             javax.vecmath.Point2d naturalOrigin,
                             Unit units,
                             double scale,
                             Identifiable id)

Parameters:

firstParallelLatitude - the latitude (in radians) of the first parallel. (Snyder phi_1).

secondParallelLatitude - the latitude (in radians) of the second parallel. (Snyder phi_2).

geographicCRS -

falseNorthing -

falseEasting -

naturalOrigin -

units -

scale -

id - an identifiable instance containing information about this projection

LambertConformalConic

public LambertConformalConic(double firstParallelLatitude,
                             double secondParallelLatitude,
                             GeographicCRS geographicCRS,
                             double falseNorthing,
                             double falseEasting,
                             javax.vecmath.Point2d naturalOrigin,
                             Unit units,
                             double scale)

Parameters:

firstParallelLatitude - the latitude (in radians) of the first parallel. (Snyder phi_1).

secondParallelLatitude - the latitude (in radians) of the second parallel. (Snyder phi_2).

geographicCRS -

falseNorthing -

falseEasting -

naturalOrigin -

units -

scale -

LambertConformalConic

public LambertConformalConic(GeographicCRS geographicCRS,
                             double falseNorthing,
                             double falseEasting,
                             javax.vecmath.Point2d naturalOrigin,
                             Unit units,
                             double scale,
                             Identifiable id)

Creates a Lambert Conformal projection with a tangential cone at the naturalOrigin.y's latitude.

Parameters:

geographicCRS -

falseNorthing -

falseEasting -

naturalOrigin -

units -

scale -

id - an identifiable instance containing information about this projection

LambertConformalConic

public LambertConformalConic(GeographicCRS geographicCRS,
                             double falseNorthing,
                             double falseEasting,
                             javax.vecmath.Point2d naturalOrigin,
                             Unit units,
                             double scale)

Creates a Lambert Conformal projection with a tangential cone at the naturalOrigin.y's latitude.

Parameters:

geographicCRS -

falseNorthing -

falseEasting -

naturalOrigin -

units -

scale -

LambertConformalConic

public LambertConformalConic(double firstParallelLatitude,
                             double secondParallelLatitude,
                             GeographicCRS geographicCRS,
                             double falseNorthing,
                             double falseEasting,
                             javax.vecmath.Point2d naturalOrigin,
                             Unit units,
                             Identifiable id)

Creates a Lambert Conformal projection with a intersecting cone at the given parallel latitudes. and a scale of 1.

Parameters:

firstParallelLatitude - the latitude (in radians) of the first parallel. (Snyder phi_1).

secondParallelLatitude - the latitude (in radians) of the second parallel. (Snyder phi_2).

geographicCRS -

falseNorthing -

falseEasting -

naturalOrigin -

units -

id - an identifiable instance containing information about this projection

LambertConformalConic

public LambertConformalConic(double firstParallelLatitude,
                             double secondParallelLatitude,
                             GeographicCRS geographicCRS,
                             double falseNorthing,
                             double falseEasting,
                             javax.vecmath.Point2d naturalOrigin,
                             Unit units)

Creates a Lambert Conformal projection with a intersecting cone at the given parallel latitudes. and a scale of 1.

Parameters:

firstParallelLatitude - the latitude (in radians) of the first parallel. (Snyder phi_1).

secondParallelLatitude - the latitude (in radians) of the second parallel. (Snyder phi_2).

geographicCRS -

falseNorthing -

falseEasting -

naturalOrigin -

units -

LambertConformalConic

public LambertConformalConic(GeographicCRS geographicCRS,
                             double falseNorthing,
                             double falseEasting,
                             javax.vecmath.Point2d naturalOrigin,
                             Unit units,
                             Identifiable id)

Creates a Lambert Conformal projection with a tangential cone at the naturalOrigin.y's latitude. And a scale of 1.

Parameters:

geographicCRS -

falseNorthing -

falseEasting -

naturalOrigin -

units -

id - an identifiable instance containing information about this projection

LambertConformalConic

public LambertConformalConic(GeographicCRS geographicCRS,
                             double falseNorthing,
                             double falseEasting,
                             javax.vecmath.Point2d naturalOrigin,
                             Unit units)

Creates a Lambert Conformal projection with a tangential cone at the naturalOrigin.y's latitude. And a scale of 1.

Parameters:

geographicCRS -

falseNorthing -

falseEasting -

naturalOrigin -

units -

Method Detail

doInverseProjection

public javax.vecmath.Point2d doInverseProjection(double x,
                                                 double y)

Description copied from class: Projection

Do an inverse projection from projected (map) coordinates to geographic coordinates.

Specified by:

doInverseProjection in class Projection

Parameters:

x - coordinate on the map

y - coordinate on the map

Returns:

the projected Point with x = lambda and y = phi;

See Also:

Projection.doInverseProjection(double, double)

doProjection

public javax.vecmath.Point2d doProjection(double lambda,
                                          double phi)

Description copied from class: Projection

The actual transform method doing a projection from geographic coordinates to map coordinates.

Specified by:

doProjection in class Projection

Parameters:

lambda - the longitude

phi - the latitude

Returns:

the projected Point or Point(Double.NAN, Double.NAN) if an error occurred.

See Also:

Projection.doProjection(double, double)

getImplementationName

public java.lang.String getImplementationName()

Specified by:

getImplementationName in class Projection

Returns:

A deegree specific name which will be used for the export of a projection.

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class ConicProjection