An introduction to geographical information systems 3rd ed.

"This authoratitive book offers an up-to-date introduction to the world of Geographical Information Systems. It is designed to be easy to use for students at all levels, from undergraduates to professionals retraining in GIS." "The book focuses on the practical applications of GIS, and considers how the technology works. Each chapter addresses a specific theme and is backed up with examples, case studies, directed reading and additional resources on a Web site. The book can be used to give the reader a quick tour through the world of GIS, to help the reader develop a thorough understanding of GIS or as a source of reference information." "Introduction to Geographical Information Systems is an ideal text for undergraduates, postgraduates and professionals following courses in GIS. It has been adopted as a set text for the international UNGIS Postgraduate Diploma in GIS by distance learning."--BOOK JACKET.