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《Science of Surveying and Mapping》 2007-01
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Certainty and uncertainty of topographical map

CHENG Ji-cheng,JIN Jiang-jun(School of Earth and Space Science,Peking University,Beijing 100871,China)  
Topographical map was the basic material in the field of earth science research.In this paper,the certainty and uncertainty of contour line,line feature and area feature in the topographical map were expatiated.The authors concluded that contour line didn't mean that the elevation of points on the contour line was equal unless the scale was 1:1,so contour line had the character of uncertainty.This character changed with scale,physiognomy types and so on.The uncertainty character of line feature and area feature had similarity.
【CateGory Index】: P284
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