摘要
构建1∶25万城市活断层数据库时,在数据数字化、编辑、处理过程中,大量的拓扑错误会影响数据质量以及成果精度,造成数据无法入库。针对面重叠、面有缝隙、线重复、线有悬挂等几种常见拓扑错误,提出简便高效的修改方法,确保该地层矢量数据符合活断层入库要求。
In the process of data digitization, edition and sorting, a large number of topological errors will affect the quality of data and the accuracy of the results, so as the data cannot be put into storage. On the basis of this, we proposed some simple and efficient methods to modify the vector data in accordance with the common topological errors, such as the surface overlap, the surface have gaps, the line overlap, lines have dangles and so on, which could ensure that the vector data of the formation is in line with the requirements of active faults database.
出处
《地理空间信息》
2017年第12期73-75,共3页
Geospatial Information
基金
陕西省地震局启航与创新基金资助项目(201303)
陕西省防震减灾"十二五"重点资助项目(1521102700055)
关键词
1∶25万地震构造图
拓扑错误
数据质量
1:250 000 regional seismotectonic map
topology error
data quality
