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3维数据模型是 3维GIS研究中亟待解决的一个核心问题。在充分分析现有 3维数据模型的基础上 ,从实际应用出发 ,针对传统模型的不足 ,提出 1种 3维GIS面向对象数据模型 ,以解决空间不规则实体本身 ,以及实体间复杂关系的描述、表达和组织等关键问题 ,并给出此模型应用实例 ,证明此模型的可行性和实用性

With the development of GIS, many fields, such as geology, mine, subterranean hydrology, etc., realized that real three dimensional GIS (3D GIS) are urgently needed. Among the problems encountered in the development of 3D GIS, 3D data model is the most difficulty one. Presently, there are some 3D data models, namely, wireframe representation, boundary representation, cell decomposition, construction expression, tetrahedral network, octree, TIN, to name but a few. Although these models are efficient in spe...