基于GUID的多尺度核心要素数据级联更新方法研究
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摘要
福建省核心要素数据包含4个比例尺,每年需要进行2次更新。在多尺度核心要素数据更新时,容易出现数据不一致性的问题,这些问题在数据质量检查时很难被发现,特别是属性的不一致性问题。通过引入GUID型字段可以将更新前后的核心要素数据关联起来,并开发基于GUID字段的变化要素提取程序,用于变化要素的快速提取,从而实现多尺度核心要素数据的级联更新。
The core elements data of Fujian Province contains four scale data and must be updated twice a year.When multi-scale core elements data is updated,it probably cause data inconsistency problems which were difficult to be found in data quality checks,especially attributes inconsistency problems.In this study,GUID data type was used to construct relationship between original data and update data,and change features extracting program which will be used to extract change features was developed,thereby the data of other scales can be cascade updated.
The core elements data of Fujian Province contains four scale data and must be updated twice a year.When multi-scale core elements data is updated,it probably cause data inconsistency problems which were difficult to be found in data quality checks,especially attributes inconsistency problems.In this study,GUID data type was used to construct relationship between original data and update data,and change features extracting program which will be used to extract change features was developed,thereby the data of other scales can be cascade updated.
引文
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[2]张新长,郭泰圣,唐铁.一种自适应的矢量数据增量更新方法研究[J].测绘学报,2012,41(4):613-619.
[3]简灿良,赵彬彬,邓敏,等.地理空间数据不一致性探测处理方法研究[J].计算机工程与应用,2013,49(10):150-155.
[4]何榕健,戴韫卓,杜震洪,等.一种多源矢量空间数据的联动增量更新模型[J].浙江大学学报:理学版,2013,40(5):580-587.
[5]蒋雪.基于地图视觉感受的网络地图多尺度表达设计[J].测绘与空间地理信息,2014,37(2):43-45.
[6]蓝秋萍,李嘉.地图数据多比例尺级联更新方式研究[J].测绘通报,2013(4):33-36.