Effective use of today’s powerful GIS technology requires an understanding of the science of problem-solving that underpins it. Since the first edition published over a decade ago, this book has led the way, with its focus on the scientific principles that support GIS usage. It has also provided thorough, upto- date coverage of GIS procedures, techniques and public policy applications. This unique combination of science, technology and practical problem solving has made this book a best-seller across a broad spectrum of disciplines. This fully updated 4th edition continues to deliver on these strengths.

Professor Paul Longley, Department of Geography, University College London, UK.

Professor Mike Goodchild, Department of Geography, University of California Santa Barbara, USA.

Professor David Maguire, ESRI, Redlands, USA.

Professor David Rhind, Vice Chancellor and Principle, City University, London, UK.