Applied Study Based On Platform System Of VB GIS In Constructing The Building GIS Of Earthquake Disaster Reduction

Frist, paper introduces the elemental theories of GIS which are involved in constructing the GIS , includes some advance concept now, example for 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 study mainly involves in the technology of digitalization and integrated development of VB GIS.The paper study includes five parts:(1) The digitalization of map .This paper designs a way , the map was scanned into raster map, then was digitalized in the technology of tracking by hand and the software of Maplnfo under the background of raster map.(2) Entombing the GIS software of Maplnfo. According to the task , this paper anatomies some function of Maplnfo, example for data analysis , integrated system, data model etc.(3) Connecting the attribute database and spatial database. This paper utilizes the strong function of SQL, realizing the connection of attribute database and spatial database.(4) The functional design of 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 VB GIS. We fully make use of merits of some software, constructing the system of GIS through the language of VB under the environment of windows. We realize the alternation of operation, as soon as the alternation is realized in the software of Maplnfo.