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《Science of Surveying and Mapping》 2014-08
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Evaluation on attribute precision loss in format conversion of map vector data

XIONG Shun;LIU Ping-zhi;ZHANG Wei-zhu;XU Dao-zhu;Institute of Surveying and Mapping,Information Engineering University;State Key Laboratory of Geo-Information Engineering;Surveying and Mapping Institute;  
This paper studied the attribute precision loss in the format conversion of map vector data under different standard systems.It found out that the concrete steps running into precision loss in the conversion process includes code converting,attribute converting and attribute re-building,confirmed the relationship between certain and uncertain attribute precision loss through the study on methods of semantic conversion,and put forward an evaluation model to check up on the attribute precision loss in conversion process.Finally,it analyzed the evaluation results under different data quantities and different conversion difficulties,and proved the reliability of the model.
【CateGory Index】: P208
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