摘要
该文针对城市基础地理信息数据由CAD格式转入GIS时的断线连接问题,采用基于拓扑关系的最短距离和最小角度的断线自动修复技术。结果表明,断线处理效果好,具有快速,准确率高等优点,可使城市基础数据的检查和修改更加科学和快捷,为数据顺利入库打下坚实的基础。
In this paper, the auto repair techniques of the shortest distance and minimum angle based on topological relations are adopted to solve the problem of discontinous line linking when CAD data transformation to ArcGIS about city＇s basic topography information. The result shows that the method has a good treatment effect and with the advantage of rapid and high accuracy. It makes the city＇s basic data checking and revising more scientifically and fast, and it also lays a solid foundation for data warehouse smoothly.
出处
《勘察科学技术》
2014年第4期14-16,47,共4页
Site Investigation Science and Technology
基金
国家自然科学基金(41101374
41101308)
水利部公益性行业科研专项经费项目(201201025)
