摘要
原有的城市交通网络数据模型无法对大比例地图中道路的面状特征进行描述。本文引入面向对象的时空数据模型 ,把各种实体作为对象 ,把道路作为面状要素描述。作为面状要素的道路对象直接继承原有道路的非空间特征 ,通过道路中心线对象和交点对象来继承原有线状要素的道路特征 ,包括网络关系和叠加关系等 。
Old data model for urban traffic networks couldn't describe area shape feature of road in the map of big scale. The paper introduced object oriented spatio temporal data model, looked on all kinds of things as objects and described road as face shape element. Road object as face shape element inherited non spatial feature of road directly, inherited the feature of road which looked as line shape element by road center line objects and intersection point objects, added the feature of road which looked as face shape element.
出处
《测绘科学》
CAS
CSCD
2002年第4期31-34,共4页
Science of Surveying and Mapping
