DLG数据更新中的拓扑关系自适应研究

针对异构矢量数据相互转换时地理要素间拓扑关系一致性维护的问题，本文提出了一种拓扑关系自适应更新的方法。在分析地理要素间拓扑关系的基础上，研究其空间变化引起的拓扑关系变化，并以变化后的拓扑关系合理性为判断依据，提出地理要素相应的拓扑关系自适应策略。将理论研究进行工程化应用，先将地理要素的拓扑关系自适应策略转化为可编辑的XML文档，然后采用ArcGIS Add-in方式开发插件工具，实现了更新DLG数据时地理要素间拓扑关系的自适应更新，可以减少人工操作，提高更新效率。

Research on topological relation self-adaptation in DLG data update

Aiming at the problem of maintaining the consistency of the topological relationship between geographical elements when heterogeneous vector data is converted, a method of adaptively updating the topological relationship is proposed. Based on the analysis of the topological relationship between geographical elements, the change of the topological relationship caused by its spatial changes is researched. Taking the rationality of the changed topological relationship as the basis of judgment, an adaptive strategy for the topological relationship corresponding to the geographical elements is proposed. The theoretical research is applied to engineering applications. Firstly, the topological relationship adaptive strategy of geographic features is converted into an editable XML document, and then a plug-in tool is developed using the ArcGIS Add-in method. It realizes the self-adaptive updating of topological relations amony geographical features, reduces manual operations and improves update efficiency.