The Visualization Expression Based On The Spatial Information

The visualization expression based on the spatial information is applied in many fields, and its technical potential is extremely huge and the application prospect is also broad.Because the traditional space statistic and analyse ways are hard to handle the spatial information effectively; the traditional two dimension information visualization expression is not satisfied; the traditional three dimension information visualization expression has poor quality in the gain of DEM(Digital Elevation Model) and also some other problems, the land use information visualization expression of Hong Shui watershed was taken for example, further researchs were taken on such aspects as the combination of the data mining technology and visualization expression technology, gaining two dimension spatial information and information visualization expression ,gaining three dimension spatial information and information visualization expression. Specific studies as follows:(1)Combination of the data mining technology and visualization technology.Multi-process of GIS dataset was organized reasonably, and the data and the tool were linked together in order following the users to form a flowage structure module with which the spatial processing was automatically and high effectively by using data mining technology and Model Builder.(2)About the aspect of the gaining the spatial information in two dimension spatial, three aspects were studied in the paper:①Gaining land use information.High accuracy land use information was obtained through a series of necessary processes such as Merging, Enhancing, Geo-coding and classing the image.② Establishment of the database.Establishment of the Geodatabase. Unified management of the multi-type of data was accomplished③ Font Creator Program and ArcGIS software were used to make a special symbols bank, and different types of land use were endowed with relevant codes.