D GIS spatial overlay analysis is being broadly concerned about in international academe and is a research focus. It is one of the important functions of spatial analysis using GIS technology. An algorithm of multi mo...D GIS spatial overlay analysis is being broadly concerned about in international academe and is a research focus. It is one of the important functions of spatial analysis using GIS technology. An algorithm of multi model spatial overlay based on three dimensional terrain model TIN is introduced in this paper which can be used to solve the TIN based three dimensional overlay operation in spatial analysis. The feasibility and validity of this algorithm is identified. This algorithm is used successfully in three dimensional overlay and region variation overlay analysis.展开更多
文摘D GIS spatial overlay analysis is being broadly concerned about in international academe and is a research focus. It is one of the important functions of spatial analysis using GIS technology. An algorithm of multi model spatial overlay based on three dimensional terrain model TIN is introduced in this paper which can be used to solve the TIN based three dimensional overlay operation in spatial analysis. The feasibility and validity of this algorithm is identified. This algorithm is used successfully in three dimensional overlay and region variation overlay analysis.