GIS中空间数据属性不确定性研究

THE STUDY ON UNCERTAINTIES OF ATTRIBUTE IN SPATIAL DATA IN GIS

空间数据是ＧＩＳ的主要研究和表示的对象，其质量的好坏及其在ＧＩＳ中的正确表示是ＧＩＳ工程建设中最重要和最基本的问题。文中运用模糊分析学的理论和方法，在系统地分析了ＧＩＳ空间数据属性不确定性的基础上，提出了模糊关系数据模型，并探讨了其相应的基本操作和运算的原理和方法，对ＧＩＳ的研究和应用具有一定的实用价值。

Spatial data are the main objects in representation and research in Geographical Information System,and its quality as well as its correct representation in GIS is very important and the most fundamental issue in GIS′s engineering construction.In this paper,based on systematic analyzing uncerainties of attribute in spatial data ,a fuzzy relation data model is given by the application of fuzzy mathematical method.The principle and methods of its related basic operation and algorithm are also discussed.All of these are applicable worthy for the research and application in GIS.