【摘 要】
：
D GISs were developed simultaneously in the late 1980s in a number of different disciplines.The development of these 3D GISs can not yet meet all needs for new representations and analytical tools in
【出 处】
：
Geo-Spatial Information Science
论文部分内容阅读
D GISs were developed simultaneously in the late 1980s in a number of different disciplines.The development of these 3D GISs can not yet meet all needs for new representations and analytical tools in 3D environments.In this paper,the data structures,es
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