Linux temps réel embarqué et outils de développements Technique


libgeo-helmerttransform-perl Transformations between coordinates in different datums
Installed size 72
Maintainer Dominic Hargreaves <dom@earth.li>
Architecture all
Version 1.11-1
Depends perl (>= 5.6.0-16)
Suggests libgecode-doc
File name pool/main/libg/libgeo-helmerttransform-perl/libgeo-helmerttransform-perl_1.11-1_all.deb
Description 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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