东莞空间数据质量检查系统设计与实现

DESIGN AND IMPLEMENT OF DONGGUAN SPATIAL DATA CHECKING AND SUPERVISING SYSTEM

在分析东莞空间数据质量的基础上,介绍了空间数据质量检查系统设计原则,各个质量指标内容及其评价方法,探讨了数据质量自动检查与评估方法,并对成果输出内容进行介绍。实现了对空间数据质量进行全面有效的检查、评估,并对空间数据生产进度监理与空间地籍各类专题数据进行可视化检查与定位显示。这是运用计算机技术与GIS技术对大比例尺空间数据生产与整理工程进行检查的一次尝试,并取得了积极有效的成果。和传统验收比较取得了良好的经济效益,从根本上改变了空间数据的验收方式,从技术上彻底避免了“人情”数据,“垃圾”数据,使数据采集与整理作业更加规范,有效地保证了GIS数据应用质量,具有良好地应用前景。此项研究内容与方法在广东东莞数据检查系统中成功实现,软件实际应用结果表明结果可靠。

On the basis of Dongguan spatial data analysis, this paper introduces the design principle of spatial data quality checking and supervising system, different quality index contents, and evaluating method and then explores the automatic check model of the spatial data quality. The research method has been succeeded in applying to Dongguan data check system, This paper analyses the characteristics of urban and rural land spatial data of Dongwan and set up the model of data quantity supervising based on the urban and village data. This is a test of checking the urban and village spatial data by using the technique of computer and GIS, which has changed the checking and accepting method compared with traditional method. Importantly, this can avoid the ＂human relationship＂ data and ＂rubbish＂ data so as to make the process of data collecting and collating more standard. Applying the data checking about 2465km^2, it indicates that the method is suitable for data checking and quality evaluating.