Research And Realization Of Planning Management And Decision Support System Based On VRGIS Platform

In the application of urban planning, virtual reality geographic information system is in the step of rapid growth. The application expands the content of digital city, starts a new page of decision support in planning industry and prompts the office management system to the intelligent direction.The article expounds from several following topics in detail:(1)Modeling Method of City ModelsIn the construction and application of virtual reality geographic information system, modeling is the base of system's building and the key of system's running effect and efficiency. The article compares the application of two popular modeling software 3DS MAX and MultiGen Creator in virtual reality geographic information system, bases on the building flow of virtual reality project, summarizes the relative merits in the process of building models, and will be convenient for reasonable choosing modeling software in virtual reality geographic information system.(2)Realized Method of Virtual CityThe process from data acquisition, processing basic data, modeling to integrating in platform is discussed. In modeling terrain, the idea combining with GIS technology is a big breakthrough in virtual reality modeling industry.The article also expounds in details from the two topics:one is the method in combining urban planning idea and the present scene; another is the method in connecting buildings, terrain, trees modules and each module itself. (3)Management Method of Decision Support SystemIn VRGIS platform, it realizes the application of planning management functions, such as district planning, selecting planning indexes, shadow and sunlight analyses in virtual reality geographic information system. The application supplies a better way for office decision support.From the descriptions and analyses in the topics above, the article forms a 3D city combined planning and present scene, and realizes city management and decision support. In the end, it makes the contents in modeling 3D city more distinctly, the ideas in planning city more dimensional and the theories in decision management more systemic.