摘要
利用DEM进行地形起伏度分析时,需要确定统计单元的大小。由于数据的精度,数据范围等的不同,统计单元会有所变化。因此,在进行具体地区地貌制图时,首先应对使用数据进行分析,确定最佳统计单元,而不能采用以往的经验来确定。确定最佳统计单元的方法需要空间计算以及空间统计,处理起来需要耗费时间。据此,文章通过选取均值变点法来确定最佳统计单元,并利用Python语言及ArcPy、numpy、Scipy、matplotlib完成。
When using DEM to analyze terrain relief,it is necessary to determine the size of the statistical unit The statistical unit will change due to the accuracy of data and the range of data,and so on.Therefore,when conducting specific regional geo-morphic mapping,the data is first analyzed to determine the optimum statistical unit,rather than using previous experience.The method of determining the optimum statistical unit requires spatial calculations,as well as spatial statistics,which takes time to process.Therefore,this paper determines the optimum statistical unit based on the method of choosing of the mean value change point,and uses Python language and ArcPy,numpy,Scipy,matplotlib to realize that function.
作者
叶宝莹
YE Bao-ying(Institute of Geological Survey,China University of Geosciencest Beijing 100083,China)
出处
《地矿测绘》
2019年第3期1-5,11,共6页
Surveying and Mapping of Geology and Mineral Resources
