基于滚球法的面要素聚合

在自动制图综合中,面要素聚合较为常用的方法是利用聚类方法将面要素聚类为若干个类簇,进而将每个类簇合并为更大的多边形图斑。针对地图制图领域的前沿研究课题——地图自动综合,该文提出了一种基于滚球法的面状要素聚合的新方法,通过实验阐述了该方法在居民地等面要素综合中的应用,并与传统的聚合算法进行了效率上的对比分析。该方法较传统的聚合方法效率上有很大提高,在大数据量聚合中有一定的应用前景,当选择合适的滚球半径进行综合时,有较理想的结果。

Polygon cluster based on rolling sphere method

In automatic cartographic generalization,clustering method is commonly used in polygon elements polymerization.The method cluster polygon elements into several clusters,and each cluster will be merged into larger polygonal patches.Aiming at the frontier research topic in the field of cartography:map generalization,this paper presented a new method of rolling sphere method in polygon elements polymerization.The application of the method in the generalization of the polygon elements like residential elements was described through experiment.The efficiency of the method was analyzed,it greatly improved the efficiency comparing with the traditional algorithm,and had certain application prospect in large amount of data aggregation,with satisfactory results when choosing appropriate radius.