摘要
当前的GIS,采用基于专题地图分层的空间数据表达思想,地理特征表现为具有拓扑关系和分类属性的几何对象,缺乏表达语义之间的关系和特征之间的固有联系。本文探讨了能更好表达地理特征的数据模型。
In the present Geographical Informa tion System(GIS),spatial data abstraction frameworks based on theme map layer have been adopted,and geographical features are represented as geometric ob jects with associated topological r elations and classification at-tributes,neglecting semantic rela tions and intrinsic interrelations of the features themselves.This pap er describes a feature -based model that enhances the representation of geographical feature.
出处
《国土资源科技管理》
2002年第2期50-53,共4页
Scientific and Technological Management of Land and Resources
