OpenGIS Coordinate Transformation Service Implementation Specification. Version 1.0.

Abstract

This Implementation Specification provides interfaces for general positioning, coordinate systems, and coordinate transformations. Coordinates can have any number of dimensions. So this specification can handle 2D and 3D coordinates, as well as 4D, 5D etc. In order to handle any number of dimensions, this specification provides a Coordinate System package that could eventually replace the Spatial Reference package contained in the Simple Features specifications. However, it has been designed to work in conjunction with Simple Features during any transition period. This Implementation Specification anticipates the adoption of more advanced geometry interfaces. So these interfaces do not reference the IGeometry interface or the WKB format from Simple Features. Convex hulls are use where geometry is required (e.g. to define the domains of transformation functions). Convex hulls are defined from a list of points. This document can be read in conjunction with the attached HTML files and UML model, which contain the same information in a more structured format. The definitive statement of the DCP profiles is expressed in the attached Java source, and IDL files (COM and CORBA). Large parts of this document were generated from the same abstract model that was used to generate the DCP profiles. If the abstract model is revised this document may temporarily lag behind.