In recent years, great progress has been made in the development and application of GIS. But due to the difficulties, depth and extent of the study of GIS, special focus is given to the dedicated study of the applications of certain aspects. Terrain analysis is one of them. In this paper, the research on this subject is explored in detail.
The paper begins with the history and present condition of research and application of GIS. Then 3D GIS and its structure are introduced briefly, and the relev...