【摘要】 提出了基于特征因子进行空间数据库河网结构分类的方法和技术。探讨了各种类型河网的特征,阐述了对河网进行分类的因子及河网分类的方法和过程,描述了河网数据的有向图组织及其分类实验。更多还原

【Abstract】 River features in spatial database are normally organized with directed graph,which lose the semantics of rivers and their regional character.This paper proposes a method to classify the river networks in spatial database,based on some factors of river characters.Firstly,the style of river networks and its character are described.Then,some factors to classify the river networks are presented,followed with a classification method and its process for river networks.After that,the data organization based on directed graph is discussed,also with an experiment of the classification.At last,a conclusion is drawn and the future work is planned.更多还原