| org.deegree.crs.projections.azimuthal |
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Azimuthal projections use a plane to project the earth onto. A lot of different azimuthal projection exists.
(From wikipedia) Azimuthal projections have the property that directions from a central point are preserved (and
hence, great circles through the central point are represented by straight lines on the map). Usually these
projections also have radial symmetry in the scales and hence in the distortions: map distances from the central
point are computed by a function r(d) of the true distance d, independent of the angle; correspondingly, circles with
the central point as center are mapped into circles which have as center the central point on the map.
The mapping of radial lines can be visualized by imagining a plane tangent to the Earth, with the central point as
tangent point.
@author Rutger Bezema
@author last edited by: $Author: rbezema $
@version $Revision: 6259 $, $Date: 2007-03-20 10:15:15 +0100 (Di, 20 Mrz 2007)$
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| Java Source File Name | Type | Comment |
| AzimuthalProjection.java | Class | The AzimuthalProjection class functions as a super class to all azimuthal projections.
(From wikipedia) Azimuthal projections have the property that directions from a central point are preserved (and
hence, great circles through the central point are represented by straight lines on the map). |
| LambertAzimuthalEqualArea.java | Class | The LambertAzimuthalEqualArea projection has following properties (From J.S. |
| StereographicAlternative.java | Class | StereographicAlternative projection may be imagined to be a projection of the earth's surface onto a
plane in contact with the earth at a single tangent point from the opposite end of the diameter through that tangent
point.
An alternative approach is given by Snyder
StereographicAzimuthal , where, instead of defining a single
conformal sphere at the origin point, the conformal latitude at each point on the ellipsoid is computed. |
| StereographicAzimuthal.java | Class | The StereographicAzimuthal class allows for Stereographic Projections of the Poles, equator as well as
oblique. |