Appendix C. Supported Projections

The following types of projections are directly support by Thuban. The specific values for each are provided by the user to create custom projections. Thuban comes with predefined projections which are available through the Projections dialog.

Thuban comes with a sample set of map projections for various European countries. Apart from the basic projection they differ especially in their parameterization:

Thuban uses the comprehensive PROJ library for projections. PROJ provides more than the four commonly used projections described above. If needed Thuban can be easily extended to a new projection covered by PROJ.