Research on Setting up a data quality system for topographic mapping of west China
In order to develop a quality assurance system for maps thus obtained from the National Western Surveying and Mapping Project on 1:50000 Topological Maps Blank Area,a spatial data quality check method based on entity and evaluation method by implementing the cloud theory and rough set is going to be put forward in the paper.First,spatial data quality problems are to be analyzed and possible quality problems will be described.Secondly,a digital linear graphic spatial data quality model is built and the quality elements and sub-elements are elaborately summarized.Next,spatial computing operators that the check process demands are given.The weight of each index is calculated according to importance of attribute in rough set.Cloud decision generator transforms indexes value into qualitative evaluation.Finally,the homologous software of the spatial data quality check and evaluation is developed to control spatial data quality.Therefore a spatial data quality control and evaluation technique system is founded.It shows that the check and evaluation methods are feasible and software has higher automation from the experiment.
spatial data quality control digital linear graphic cloud model China western area
Yang Ping Tang Xinming Cao Yang
School of Resource and Environment Science,Wuhan University,129 Luoyu Road,Wuhan,China 430079;Chines Chinese Academy of Surveying and Mapping,16 Beitaiping Road,Beijing,China 100039 College of Surveying and Geographic science,LiaoNing Technical University.No 47,Zhonghua Rd,Fuxin,Ch
国际会议
第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)
广州
英文
2008-06-28（万方平台首次上网日期，不代表论文的发表时间）