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METHOD FOR THE CONSTRUCTION OF THE GEOLOGICAL MAP DATABASE BASED ON MAPGIS——EXAMPLE FROM THE 1∶1 M GEOLOGICAL MAP DATABASE OF CHINA

KE Xue,DING Xiao-zhong,HAN Kun-ying,JU Yuan-jing,PANG Jian-feng(Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China)  
With the rapid development of informationization and continuous advances in technology and theory in China,the establishment of the geological map database has become the current trend of development.The geological map database based on GIS is convenient for the storage,inquiry,analysis and updating of the geological data,thus laying a foundation for information sharing.Take for example the 1∶1 M Geological Map Database of China,this paper introduces the method of building the geological map database based on MAPGIS in such aspects as mapping design,data preparation,data processing,projection conversion,map connection,database building and data examination and updating.
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