To understand the power of Geographical Information Systems and Geographical Positioning Systems today, it is essential to understand their background and history, and the needs they were designed to answer .This is the first comprehensive history of GIS for both practitioners and students.From GPS systems that help you find your destination in a rented car, to satellite imaging for locating new petroleum reserves, GIS technology is changing the world. This book brings together for the first time the expert testimonies of the pioneers, key scientists and entrepreneurs who created the GIS field and made it what it is today. It covers both the raster and vector sides of GIS development. From remote sensing to PC-based systems; from Land Information Systems to defense applications, this is the definitive history of GIS.For all GIS and GPS professional practitioners, developers and students.