【摘要】 地图与DLG数据的更新方式之间既有区别又有联系,在研究DLG数据增量更新及地图与DLG数据一体化管理的基础上,提出一种地理信息图库一体更新方法,以地理实体为单位进行几何、属性和地图表达信息组织管理,获取DLG数据的增量信息并对增量信息进行地图表达得到符号图形增量信息。最后通过试验数据验证了该方法的有效性,且其具有易于计算机实现、效率高、可扩展性强、适于地图与DLG数据一体化更新等优点。更多还原

【Abstract】 There is difference and relativity between the updating mode of map and DLG. Based on the research of DLG incremental update and integrated management of map and DLG,a graph-database integration updating method for geographic is proposed. The spatial information of geometry and attribute and the symbolic graphic information are organized in the unit of geographic entity. With map presentation of DLG incremental information,the incremental information of symbolic graphic information is obtained. Real-life data were used to verify the effectiveness and the advantages of easy realization by computer,high efficiency and scalability,and being suitable for the integrated updating of maps and DLG.更多还原