对空间数据不确定性研究的思考

对GIS中空间数据不确定性研究中存在的问题进行思考后提出了5点建议。主要包括:1)要区分GIS中确定性目标和不确定性目标;2)要区分用离散点逼近曲线/曲面的逼近误差和离散点自身量测误差及其传播;3)要研究GIS中的几何不确定性,更要重视研究属性和时态不确定性;4)要研究空间数据质量,更要研究空间信息服务的质量;5)空间数据不确定性研究要努力向实际应用转化。

Some Thoughts on Spatial Data Uncertainty in GIS

After thinking about spatial data uncertainty in GIS,the author proposed five suggestions about it,namely: 1) it was necessary to distinguish whether objects were uncertainty objects or not;2) for the quality analysis of curve and surface,it was necessary to distinguish fitting errors and measurement errors of districted points;3) for spatial data uncertainty study not only geometry,but also attributes(semantic) and temporal uncertainty could be considered carefully;4) quality of service(QoS) was much more important than quality of data(QoD) in GIS quality control;5) the study on spatial data uncertainty should be put forward to practical application.