Oracle Spatial空间数据操作缺陷及解决方案  

A New Limitation of Oracle Spatial for Spatial Data Management and Its Solution

作　　者：刘南[1] 刘仁义[1] 冯杭建[1] 谢炯[1] 李伟[1] 

机构地区：[1]浙江大学GIS重点实验室,杭州310028

出　　处：《中国图象图形学报（A辑）》2004年第12期1504-1508,F006,共6页Journal of Image and Graphics

基　　金：国家自然科学基金 (4 0 2 710 87) ;国家"863"项目 (2 0 0 1AA13 5 180;2 0 0 1AA63 0 3 0 1) ;浙江省自然科学基金 (4 0 10 0 6)

摘　　要：在进行空间数据叠加分析的实际应用中 ,发现 Oracle Spatial处理空间数据的一个缺陷 ,并得到 Oracle公司的确认 (bug号 :314 6 2 4 4 )。针对 Oracle Spatial处理海量地理空间数据的不足 ,提出了坐标概化叠加算法 ,根据空间叠加分析精度要求 ,选择合适的容许限值 ,并以此开发了一个扩展模块。另外还给出了应用该扩展模块进行1∶ 4 0 0万全国市县行政图与全国土地利用图的空间叠加分析的实例。采用 Oracle Spatial处理出错的数据进行测试 。By an application of analyzing for spatial data overlay, a bug was discovered in Oracle Spatial and confirmed by Oracle Corporation. The bug ID is 3146244. In allusion to the disadvantage of Oracle Spatial in processing massive spatial data, an algorithm of “Coordinate-consolidation Overlay” was presented. The appropriate threshold value was selected according to analysis of spatial data overlay. An extended module was developed based on this algorithm in Oracle Spatial. The correctness and validity of the solution were testified by using the spatial data in which bug happened for Oracle Spatial. In the end, an application example in overlay analyses of nationwide municipality-county map and land-use map at scale 1∶4000 000 was given by using the extended module of Oracle Spatial.

关 键 词：地理空间数据 叠加 国土 土地利用图 扩展模块 坐标 发现 容许 解决方案 算法 

分 类 号：TB53[理学—物理] P208[理学—声学]