The dissection of three-dimensional Geographic Information Systems

In this paper we dissected the 3-dimensional Geographic Information Systems (3D GISs) and disambiguated some points such as (1) 3D GIS should be a component of GIS, it's a subsystem; (2) data modelling is not the main obstacle to its development; (3) it's no necessary and also very difficult for 3D GIS to replace GIS; (4) the main developing direction of 3D GIS should be special subsystems, that is, 3D GIS research must be based on relative application areas.Computer Science, Artificial IntelligenceComputer Science, Software EngineeringComputer Science, Theory & MethodsSCI(E)CPCI-S(ISTP)