基于GIS的公交线路自动绘制算法的实现及应用

An automatically drawing algorithm of bus line based on GIS

基于道路-路段关系的拓扑模型,建立了道路-路段索引数据库,设计了公交线路矢量对象的自动绘制算法,并采用VB与Supermap控件进行了公交地理信息系统(GIS)开发,以苏州公交数据为样本,对该算法进行了实例研究。实践证明,该算法可以提高公交系统中线路、站点等公交数据的编辑与更新效率,方便公交信息空间数据库的建立与维护,具有一定的实用性。

Based on the topological model of a whole road and its sections, an index database of roads and their sections was built. According to this database, an automatically drawing algorithm of bus line was designed and realized. By adopting VB and Supermap controls, we developed the bus line GIS and carried on a case study of this algorithm by taking Suzhou bus line database as a sample. The results show that the attribute information of the correlated bus stations can be updated automatically. The algorithm can be used in editing and updating bus data and is practical in establishing and maintaining spatial databases of bus lines.