地理信息系统中动态分段技术的研究

Studies on Dynamic Segmentation in GIS

动态分段是一种新的线性特征的动态分析、显示和绘图技术。本文结合ＧＩＳ在公路信息管理领域的应用，论述了动态分段技术产生的根源，动态分段数据库的特点及实现动态分段的算法。以空间数据库和属性数据库的双向查询为例，说明了动态分段技术的具体应用，它的有关算法及命令格式。

Dynamic Segmentation is a new technique in the analysis,displayingand mapping of lines in GIS.In view of GIS application in the transportation in-formation management,this paper discusses the origin of dynamic segmentation andthe characteristics of attribute data base for it and gives the algorithm for its im-plementation. Taking the mutual querying between spatial data and attribute dataas an example,it demonstrats the application of dynamic segmentation,and dicus-ses the related algorithm and the command format.