Many advances in the integration of group spatial modeling, geographic information systems (GIS), and the Internet have occurred in recent years, however there is a lack of materials to highlight the transdisciplinary characteristics and impacts of this convergence while providing a uniform and consistent treatment of this expanding field of research. ""Collaborative Geographic Information Systems"" identifies unifying concepts in the field and presents them in a single volume, providing a comprehensive treatment of collaborative GIS focusing on system design, group spatial planning and mapping, Internet and wireless applications, and more. This book also details the theories, processes, and tools for designing and implementing collaborative GIS, and explores collaborative GIS methodologies currently being used or developed. ""Collaborative Geographic Information Systems"" is of immense value to academic researchers, planners and policy makers, graduate students, and individuals working in GIS, geography, environmental science, urban planning, computer supported cooperative work, and information technology.