固定格网划分的空间索引的实现技术--《北京测绘》2003年01期

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I6i [3N]Z V0固定格网划分的空间索引的实现技术

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【摘要】:基于现行地理信息系统中所用的R树类和四叉树类索引复杂而实现困难的特点 ,本文提出了实践中常用的一种方便快捷易实现的基于固定格网划分的空间索引技术 ,阐述了其基本理论及实现过程。水利论文5e m_G B-\@ E;{

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武汉大学资源与环境科学学院 西安测绘研究所

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$M;H2?q k00 引言地理信息是复杂多变的 ,不同时间和区域的数据迥然不同。但从其与空间位置的关联性可分为空间数据和属性数据。空间数据库是存储和管理各种空间和非空间信息的 ,其管理带有空间属性信息的能力是一般关系型数据库所不具备的。其次 ,地理信息的快速检索查询是空间数据库水利论文 D!}O*EPa

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