Design and Implementation of the Geographic Information Visualization System
|Keywords||Geographic Information System Digital Geological Survey Mapping Techniques RGMAP System Spatial database|
In earlier period in our country regional geological survey had been completed by using traditional method, later period Digital Geological Survey Mapping Techniques has been used on the base of the advanced geography database model. Corresponds with this, regional geological survey completion of work achievement geological map mainly has three kinds of forms in our country including:the paper medium geological map, the digitized geological map and the digital geological map. In order to adapt the computer science and the information science development, service the social well, the final regional geological survey achievement all must include the establishment of geologic map spatial database.As the core of GIS, The spatial database is the base of the GIS technological development, whereas the spatial data model is the core and foundation of the spatial database. Presently, the object-oriented geography database model is the typical representation of the spatial database model in the geographic technology.Area digital geological survey mapping technology transformed to the advanced technology and theory from the tradition method mainly by the manpower. It also brought about the revolutionary change to the technological process of the geologic map spatial data base.In order to build up the new model geologic map spatial database adapting to the new technique developing trend, the paper should know about the technology theory and the standard norm very well first. The paper needs to carry out necessary treatment for the collected graphic data during the earlier stage of PRB process in the RGMAP digital geological survey mapping system. The spatial data must be built up the strict spatial topology relation in the vector quantity-rization stage.In the system of the RGMAP, By establishing the PRB map database, renewing the actual material PRB content, and renewing the actual material of spatial database,This paper builded the RGMAP spatial database.In the process of establishment of Geological Map Spatial Database on RGMAP system, full displaying general MAPGIS software and RGMAP system formidable function, using each operation skill, strictly following the technical method. The basic step, which summarizes from the practice, is helpful to quickly effectively establish the Geological Map Spatial Database on RGMAP system.