摘要
基于全球的空间矢量数据,具有数据量大,信息量丰富等特点,这对数据的处理、存储与传递都提出了较高的要求。尤其是多边形,由于其可能包含岛的信息而使得处理过程变得非常复杂。主要针对全球二维多边形矢量数据,应用基于全球四叉树的高效索引机制,研究了多边形处理技术,主要是其求交算法。结果表明,讨论的多边形处理技术和算法,适合全球海量数据在处理、存储以及传递等方面的要求,并已应用到某一全球海量数据处理的系统中。
The spatial vectors based on global have characteristics of great capacity and abundant information. Thus it brings forward high demand for the data to disposal, save and transfer. Especially for polygons, that makes disposing procedure more complex because its has island information. Applying the efficient index of quadtree, the paper studies the technique, mainly the intersection for polygons based on two dimensional vectors. In the end, it improves that the disposal technique for polygons fit the demands for the global great capacity data, and applies in a system.
出处
《装备指挥技术学院学报》
2007年第3期104-108,共5页
Journal of the Academy of Equipment Command & Technology
基金
部委级资助项目