摘要
空间实体编码是空间数据组织的关键,是地学信息查询、检索和数据挖掘的基础。该文针对传统的ID编码技术的不足,围绕无边界GIS与全球空间数据组织的急需,将空间实体的位置信息引入ID编码中,提出了一种由主副码构成且综合考虑了空间实体所在宏观象限、空间实体位置和唯一检索标识三方面信息的QuaPA编码方法。以矿山GIS为例,论述了无边界2DGIS和无边界3DGIS中基于高斯坐标系的QuaPA编码方法;以全球空间数据组织为例,论述了基于经纬坐标系和球面半径的地球QuaPA编码法。分析指出,QuaPA法从原理上支持基于窗坐标的快速空间索引和格网索引机制。
The location coding for spatial entity is the key of spatial data organization, and is the base of geo-information inquiry, index and data excavation. Referring to the shortcomings of traditional ID coding techniques and the urgent demands of borderless GIS and global spatial data organization, the location information of spatial entity is applied in the ID coding process. A new QuaPA-based ID coding method, comprised of principal code and auxiliary code, is presented. It takes the quadrant where the entity involved in, the location of the entity and the unique indexing-label of the entity into consideration as a whole. As mine GIS for application example, the QuaPA coding for the spatial entity in borderless 2D GIS and 3D GIS is introduced, and as global spatial data organization for example, the QuaPA coding based on latitude-longitude coordination system and global radius is introduced. The QuaPA method supports the rapid spatial indexing based on window's coordinate and grid index mechanism.
出处
《地理与地理信息科学》
CSSCI
CSCD
北大核心
2003年第5期1-5,共5页
Geography and Geo-Information Science
基金
教育部"高校青年教师奖"专项基金
香港研究资助局(3_ZB40)
香港理工大学(1.34.9709)
