Research on the geographic spatio-temporal modeling based on the frame
Xin Li · Cehui kexue · 2008
Spatial data model can reflect spatial entity and their relations in the real world,but GIS data model in existence can only express that at one moment,it doesn't consider the change of the entities during a period,and it can't satisfy the requirement of consumers.The essence of GIS application is analyzed in this paper.The conceptions and the styles of GIS modeling are studied.Moreover,the status quo and problem of geographical spatio-temporal concept and spatial data model are discussed.Based on the spatial system theory,a spatial data model structure is proposed.And a frame-based spatio-temporal object data model is designed,which is suitable to express GIS procedure model.Finally,the expression and operation method of spatial objects is discussed.