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Auto-pickup arithmetic research of road-connectivity

WANG Hai-tao~①LIU Hai-yan~①LI Shao-mei~①ZHAO Yi~②(①Department of Cartography,Institute of Surveying and Mapping,Zhengzhou 450052,China;②Info-technic Terminal of Surveying and Mapping,Xi'an 710054,China)  
Road-connectivity is the infrtation of other roads which intersects with it.This article brings out auto-pickup arithmetic of road-connectivity,and applies it on auto-pick-up of traffic infortation of special map.The result is very well.The arithmetic ad- vances efficiency and nicety.
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