The second edition of a bestseller‎,‎ Mathematical Techniques in GIS demystifies the mathematics used in the manipulation of spatially related data‎.‎ The author takes a step‎-by‎-step approach through the basics of arithmetic‎,‎ algebra‎,‎ geometry‎,‎ trigonometry and calculus that underpin the management of such data‎.‎ He then explores the use of matrices‎,‎ determinants and vectors in the handling of geographic information so that the data may be analyzed and displayed in two‎-dimensional form either in the visualization of the terrain or as map projections‎.‎ See What‎'‎s New in the Second Edition‎:‎ * Summaries at the end of each chapter * Worked examples of techniques described * Additional material on matrices and vectors * Further material on map projections * New material on spatial correlation * A new section on global positioning systems Written for those who need to make use geographic information systems but have a limited mathematical background‎,‎ this book introduces the basic statistical techniques commonly used in geographic information systems and explains best‎-fit solutions and the mathematics behind satellite positioning‎.‎ By understanding the mathematics behind the gathering‎,‎ processing‎,‎ and display of information‎,‎ you can better advise others on the integrity of results‎,‎ the quality of the information‎,‎ and the safety of using it‎.‎