【摘要】 描述了地理实体的建设内容,介绍了基于图元的地理实体组织及表达形式,比较了传统地形图与实体化的数据组织形式的区别。对地理实体在空间、时间上的多态特征进行了分析,阐述了地理实体对地物的空间一致性表达的特点,设计了基于多源矢量数据开展的地理实体融合方法及步骤,并以房屋建筑实体为例介绍融合成果的具体应用。本文研究为地理信息系统中地理实体的相关研究提供了借鉴。更多还原

【Abstract】 This paper describes the construction content of geographic entity,introduces the organization and expression form of geographic entity based on image unit distinguish,and compares the difference between traditional topographic map and entity data organization form. This paper analyzes the spatial and temporal variety characteristics of geographical entities,and expounds the characteristics of spatial consistency expression to geographical entities on ground objects. Based on the multi-source vector data,the method and steps of geographic entity fusion are designed,and the concrete application of the fusion results is introduced with the building entity as an example. This paper provides the reference for the study of geographic entities in GIS.更多还原