Introduction

This document describes version 0.9 of the TRANSFORM coordinate transformation facility and shows how it may be used in application programs operating within the Starlink ADAM environment. It is assumed that the reader is familiar with this environment and with the Starlink Hierarchical Data System HDS (SUN/92).

The main text of this document provides a guide for programmers who have not used the TRANSFORM facility before. It contains an introduction to the overall capabilities of the software and the basic concepts involved, followed by a tutorial-style description of all the main features with examples of their use.

The Appendices at the end of the document contain further reference material which will mainly be of value to more experienced users. In particular, Appendix  gives a description of all the user-callable routines provided.