Supported by the National Natural Science Foundation of China(6 98330 10 ) and the Emphasis Project of National"Ninth five-ye
Spatial Information Infrastructure (SII) facilitates the sharing, interoperability and integration of geographical information among department components of a region or a country. The SII is developed and shared by d...
Project supported by the National Natural Science Foundation of China (No.69833010)
The Tetrahedral Network(TEN) is a powerful 3-D vector structure in GIS, which has a lot of advantages such as simple structure, fast topological relation processing and rapid visualization. The difficulty of TEN appli...