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本文以南京长江河道的水下地形数据数字化为例,通过对数字化数据质量的检查,分析了影响数据质量的主要因素—拓扑错误,并设计了批量检查修改拓扑错误的算法。通过设计开发针对高程属性检查的数据质量检查软件,提高数据质量检查的效率,保证数字化水下地形数据的质量。 更多还原

【Abstract】 Taking the underwater topographic vector data of the Yangtze river in Nanjing as an example,this article examined the quality of vector data,analyzed topographic error — the main factor that affected the data quality and designed the algorithm for modifying a batch of topographic errors.This software is designed for examining the attribute of elevation,which improves the efficiency of examining the data quality and guarantees the quality of digitized underwater vector data. 更多还原