摘要
数据组织是 GIS系统建设的基础和前提 ,认知方式、认知手段的变化 ,会带来认知结果的不同 ,形成了两种不同的数据组织方法 :(1 )基于分层的数据组织方法 ;(2 )基于特征的数据组织方法。文章分析了这两种数据组织方法的有关内容 ,并对它们进行了对比 ,认为基于特征的数据组织方法是第 4代 GIS的基础和核心 ,是
Data organization is the foundation and precondition for GIS the building and development Changes in cognitive modes and cognitive means can generate different, results of cognition in the real world,i e , the layer based data organization and the feature based data organization The paper analyzes in detail the means of the layer based data organization from the point of view of cognition and computer, namely from the point of view of theory and technique The development of the former is limited by lots of shortcomings in essential So the means of feature based data organization got developed Its foundation is to classify the features Feature classification is based on the theory of cognitive classification and it must use the means of classifying the geographic information for reference The latter should be developed with the object oriented technique on the basis of the former But both of them answer the basic cognitive questions: where, what and when By means of analysis and comparison, the paper draws a conclusion that it is the key to implement the fourth generation GIS for the feature based data organization, which is a new direction in GIS development
出处
《地球信息科学》
CSCD
2003年第3期42-46,共5页
Geo-information Science
