The Research Of Visualization Technology In Spatial Decision Support System

With the development of our society, the situation we confront everyday is becoming more and more complicated, and most decision problems have something with spatial position. Therefore the spatial decision support theory and technology research is very important. Spatial decision supporting system is a combination of spatial decision technology with information technology, and makes progress by absorbing new technology constantly. Now, spatial decision supporting system has been used widely in many fields. Whereas, there are several problems such as the drastic repetitive construction, lower model reused percent in the software level, the low-frequent interaction in model visualization, etc. In order to solving the above problems, This paper discusses the solution of these situations on the research of key common technology of spatial decision supporting system. 1. This paper analyzes the general development and basic decision theory, decision support system, and bring out the new characteristic of dynamic development of DSS.2. On the base of the new characteristic of DSS and comparison of several software engineer technology, we adopt "United Software process" as a development principle of SDSS. Further, we make research on visualization modeling technology based on the tool of CASE, the integration method of analyzing model with GIS based on component technology, and discuss the integrating strategy with COM or Javabeans.3. This paper sets forth a development-faced model assort, and discuss modeling theory of every type model and the integration of model with GIS. Based on the assort, This paper puts forward a new general strategy of development.4. On the problem of the low-frequent interaction in model visualization, we emphasize the visualization function in SDSS. We illuminate the visualization technology can use not only in expression but also in analysis. And this paper sums up all the form of visualization technology, then discusses the theory and technology of data visualization, model visualization in detail,and the technology characteristic to realize visualization the Web environment.5. Using several kinds of theory technology in SDSS building, we implement an example and achieve a good result.