作　　者： ; ; ;

机构地区： 国家农业信息化工程技术研究中心

出　　处： 《地球信息科学》 2004年第1期36-40,共5页

摘　　要： 空间数据库更新是当前GIS研究中急需解决的问题。本文分析了地理信息系统空间数据更新方式、实现的技术方法。研究表明空间分析技术是空间数据更新的基础,空间叠加分析、实体空间关系分析,以及基于实体空间关系的智能捕捉,是实现区域空间要素整体更新和局部要素更新这两种更新方式的最主要的支持技术。 Spatial database update is a matter of urgency, which will become the 'bottleneck' to GIS application instead of spatial data production, hence it has become a focus in GIS research fields. The aim of this study is to provide reference to help solving the problem of spatial information update. In this paper, ways of land use spatial data update and the methods to achieve update are studied. Overlay analysis, spatial relationship between spatial entities and smart snap based on spatial analysis are the technical bases for spatial data update. Complete update and partial update are two main ways to spatial data update, and they have differences in many aspects, such as existing way of data sources for update, operational object, technologies for update and key technologies.

关 键 词： 空间数据库 地理信息系统 数据更新

领　　域： [天文地球] [天文地球]