【摘要】 地理信息系统的主要任务之一是有效地检索空间数据及快速响应不同用户的在线查询。传统的索引方法只能解决一维查询问题,无法满足地理信息系统的要求。该文介绍了GIS中具有代表性的三类空间索引方法,即基于点区域划分的索引方法、基于面区域划分的索引方法和空间实体的地址编码索引方法,并且进行了分析对比。更多还原

【Abstract】 An important task in GIS is to search spatial data online efficiently and deal with queries from different users. But the traditional indexes are single solution to 1-D queries, and unable to meet the need of GIS. This paper introduces and analyzes three classes of representative spatial indexes, point-based indexes, region-based indexes, and geocoding techniques. Moreover, the comparison between main spatial indexes is presented in a table, and the future works of spatial index in GIS are given as well.更多还原