Mappings Available

The basic concept of a MappingMapping (§2.1) is rather generic and obviously it is necessary to have specific Mappings that implement specific relationships between coordinate systems. AST provides a range of these, to perform transformations such as the following and, where appropriate, their inverses:

Further reading: For a more complete description of each of the Mappings mentioned above, see its entry in Appendix D. In addition, see the discussion of the PermMap in §5.11, the UnitMapUnitMap in §5.10 and the IntraMap in §20. The ZoomMap is used as an example throughout §4.