| The elemental theories of Daqing information system for earthquake disaster reduction based on GIS which are involved in constructing the GIS is introduced,including some advance concept, for example spatial data model and structure, conceptual model of cartographic visualization under the environment of GIS, data model of spatial algorithm and feature of spatial domain etc. The paper study includes five parts: (1) The translation of map. The database found and managed method based computerized earthquake disaster reduction (AutoCAD,ARC/INFO,MapInfo)is investigated in MapInfo. The database of Daqing information system is mainly presented in vector data, and partially grid data. (2) Entombing the GIS software of MapInfo. According to the task,this paper anatomies some function of MapInfo, example for data analysis,integrated system, data model etc. (3) This paper utilizes the strong function of SQL, realizing the connection of attribute database and spatial database. (4) The functional design of the MapInfo map for earthquake disaster reduction based on GIS. The design mainly satisfied with consumers, solving the special task, selecting appropriate function of GIS and concretizing the function. (5) Realizing the function of Delphi GIS. The paper makes most use of merits of some software, constructing the system of GIS through the language of Delphi under the environment of windows, and realizes the alternation of operation, as soon as the alternation is realized in the software of MapInfo. |
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