地理实体的多态特征研究  

Research on Polymorphism of Geographic Entity

作　　者：季晓林[1] 

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《测绘科学技术学报》2014年第3期310-314,319,共6页Journal of Geomatics Science and Technology

基　　金：国家自然科学基金项目(41201391);河南省科技创新人才计划项目(134100510001)

摘　　要：提出了地理实体的多态特征概念,对地理实体的几何、属性、关系的多态特征的成因、表现进行了分析,并对每一种多态特征进行了模拟方法的设计。提出了一种改进的多态模拟方法来实现几何多态管理,设计了融合体与映射集合的属性多态模拟方法,提出了解决多种层属特征的"地理实体组织法",并对空间关系的多态特征表达方式进行了讨论。系列方法已在相应系统中得到较好的应用验证。Polymorphism of geographic entity was introduced in the paper. With that the cause and expression of polymorphism for geographic entity was discussed, also a simulation method for each one was introduced. An improved polymorphism simulated method to manage the geometry was provided by designing a new aggregation and mapping table which can serve attribute. The geographic entity organization was introduced, which could be used to solve the problem of multi-arrangement. At last, the polymorphism express of spatial relationship was discussed. All the methods had been used in some application effectively.

关 键 词：地理实体 多态特征 地理实体组织法 多态模拟方法 层属服务 

分 类 号：P208[天文地球—地图制图学与地理信息工程]