电子地图中POI数据抽稀方法研究

Research on POI Data Thinning Method in Electronic Map

电子地图是现代生活的刚需,而兴趣点又是电子地图的重要数据之一。为满足电子地图的快速更新,就需要对兴趣点数据进行快速有效的处理,使之满足电子地图显示的需要。本文介绍了基于ArcGIS的三种抽稀方法,分别是牵引线抽稀发,改进的SubSet随机抽稀法和SubPoints插件抽稀法,分析了这三种方法的原理、实现方法和各自的优缺点。然后以增城区的实例数据为样本,理顺了电子地图兴趣点的处理流程,并采用SubPoints插件抽稀法对兴趣点进行了抽稀,验证了SubPoints方法在制作电子地图上的可行性。

Electronic map is necessary use of modern life,and the POI is one of the important data of electronic map.In order to satisfy the rapid updating of electronic map,it is necessary to process the points of interest data quickly and effectively so as to satisfy the needs of electronic map display.In this paper,it introduces three kinds of POI thinning methods based on ArcGIS,which are traction line thinning method,Improved SubSet random thinning method and SubPoints plug-in thinning method.Analyzes the principle,realization method and their advantages and disadvantages of the three methods.Then with the example data of Zengcheng district as a sample,straighten out the processing flow map of of the electronic map＇s POI,and using the SubPoints plug-in thinning method for POI of sparsing,verify the feasibility of SubPoints method in the production of electronic map.