摘要
对已经成为地理信息领域研究热点的三维地理信息系统进行了较为深入地探讨。基于空间认知方法学理论 ,结合面向对象的思想 ,提出了一种新的三维地理信息系统数据结构。该数据结构符合人的一般思维 ,可以方便清晰地存储和管理空间数据 ,并且有利于三维空间对象的空间分析与显示。针对三维地理信息系统空间分析的基础环节三维空间点定位与查询 ,提出了化三维查询为二维 +一维查询 ,该方法可以提高三维空间查询的速度。
D-GIS has been a pop field of geo-information research. This paper study 3D-GIS more deeply. A new data structure is presented based on spatial-cognitive-methodology and open-to-object thoughts, which agrees with popular human thought, can storage and manage spatial data conveniently, and is avail of spatial analysis and display of 3D-object. This paper also represent a method translating searching in 3D space to searching in 2D space plus in 1D Space, which can increase the rate in 3D space search.
出处
《测绘科学》
CSCD
2001年第4期25-28,共4页
Science of Surveying and Mapping
