基础地理信息数据的增量更新制图方法

Research on change-only updating mapping for fundamental geographic information

本文根据浙江省基础地理信息数据的特点,采用基于版本数据库的变化信息提取方法,提取不同年代版本的增量更新数据,构建"地理数据-制图数据-地图数据"制图模型,利用所提取出的增量信息,在历史版本地图数据的基础上,研究增量更新制图模型和流程;并根据增量信息模型和制图模型,开发了一套原型系统,实现了增量更新制图。

According to the characteristics of fundamental geographic data in Zhejiang province, this article used the method of extracting varying information based on the version database to extract incre- mental updating data from different version databases. Then, a cartography model of geographic data-car- tographic data-map data was constructed to research the incremental updating cartographic model as well as the procedure based on the map data of different version databases and the extracted incremental updating data. Finally, a prototype system to realize the fundamental-geographic-data-based incremental updating cartography was developed.