Dimensional To Three-Dimensional Approaches

Geographic Information Systems (GIS) may have become a common solution for managing urban data, but unfortunately most of the commercial solutions were limited to handle only the data of two dimensions. Our life takes place in three dimensions (3D) and a two dimensions (2D) GIS is no longer sufficient to fulfill the needs of users. In geometrical terms, 2D to be a subset of 3-D and therefore this paper proposes to build a 3D solution that are sitting on top of; and working alongside with existing 2D system and the focus is on the issues of 3D data modeling, compression technique, indexing method and data query algorithms