摘要
介绍了以拓扑关系数据为基础的GIS空间点、线、面对象实体模型,给出了基于对象实体模型的自动拓扑关系模型。阐述从自动剪断线、线转弧段、微弧段剔除到自动成区等自动拓扑算法的流程,并给出了相应的应用实例。
This paper introduces the GIS space point?line?surface entity model based on topology data and the automatic topology model which is based on the objects model. With adducing relevant practical instances, this paper illustrates the topology arithmetic processes about the snipping line automatically?the line translating the arc?eliminating the micro-arc?and being the region automatically,etc..
出处
《地理空间信息》
2005年第1期28-30,共3页
Geospatial Information
