The Spatial Data Model Research And The Application Of The Object-Oriented GIS

The object-oriented techiques which are popular in recent years have generate an wide-ranging and far-reaching impact to every application field of computer, Object oriented GIS has become an important research subject in GIS field.In the thesis, by the Object-oriented method, we study and explore deeply the data model of spatial object, the definition and expretion of semantics, the basic relaionship among objects, the basic spatial operation and topology structure, the orgazization of geographic data, the storage of data and the spatial index. Based on the above, we present the global outline and frame of the object-oriented GIS. Combined with the current popular GIS flatform and the spatial database, we study Mapinfo system, a popular GIS flatform, and Oracle Spatial database, a famous spatial database. We analyse the data model, the data organization and the spatial opration of Mapinfo system which are supported the object-oriented techniques, we also point out the shortage of the topological structure. At the same time, we study the spatial data model, the spatial index and relationship of Oralce Spatial, at the end of the thesis, combined with the develop of the system of the medical healthy emergence mobilization of ShanXi provice, we model a mathrnatic model for the command and control system of the system by petri net, then, we introduce the constituation of the system and the design of the database, at the last, we settle several difficult problems we encounter when we develop the system.