空间聚类是GIS空间分析的主要内容之一,传统矢量空间聚类算法存在数据冗余、结果不直观等弊端,地图代数栅格距离变换结果图本身就蕴涵了空间客体之间的拓扑关系,通过提取距离变换结果图不同距离值的等距线,就可以实现基于最短欧氏距离的空间对象的聚类过程,本文通过算例试验证明,该算法简单、直观、合理。
Spatial-clustering analysis is an important spatial analysis method of GIS. With an analysis of vector-based method of spatial-clustering' s disadvantage such as data-redundancy and lack of intuition, this paper investigates the algorithms of distance transform through Map Algebra. Then a new raster-based method of spatial-clustering of spatial dots through shortest Euclidean distance is proposed. It is proved by the example that it is an intuitionistic and good method.