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Source: libgeo-helmerttransform-perl
Section: perl
Priority: optional
Build-Depends: debhelper (>= 7)
Build-Depends-Indep: perl (>= 5.8.8-6.1)
Maintainer: Dominic Hargreaves <dom@earth.li>
Standards-Version: 3.9.2
Homepage: http://search.cpan.org/dist/Geo-HelmertTransform/
Vcs-Git: git://anonscm.debian.org/users/dom/libgeo-helmerttransform-perl.git
Vcs-Browser: http://anonscm.debian.org/gitweb/?p=users/dom/libgeo-helmerttransform-perl.git
Package: libgeo-helmerttransform-perl
Architecture: all
Depends: ${perl:Depends}, ${misc:Depends},
Description: Transformations between coordinates in different datums
It is usual to describe geographical points in terms of their polar coordinates
(latitude, longitude and altitude) referenced to a "datum ellipsoid", which is
used to approximate the Earth's geoid. The latitude, longitude and altitude of
a given physical point vary depending on which datum ellipsoid is in use.
Unfortunately, a number of ellipsoids are in everyday use, and so it is often
necessary to transform geographical coordinates between different datum
ellipsoids.
.
Two different datum ellipsoids may differ in the locations of their centers, or
in their shape; and there may be an angle between their equatorial planes or
the meridians relative to which longitude is measured. The Helmert Transform,
which this module implements, is a linear transformation of coordinates between
pairs of datum ellipsoids in the limit of small angles of deviation between
them.
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