摘要
针对常用的空间插值方法在精度分析方面比较的不足,从地质统计学、数学函数和几何方法方面分别选取普通克里金插值法、三次样条函数法和距离权重倒数法进行插值精度的比较与分析。文章分析了各个方法的优缺点和局限性,选取疏密差异较大的均匀和不均匀离散点数据进行实验,利用三次趋势面模型和MATLAB,ArcGIS,GS+Version等相关软件进行分析与处理,得到三种方法在局部插值误差方面的变化规律,同时为使用插值方法的用户提供一个最优的选择方案。
Aiming at the comparative lack of precision anolysis of the interpolation methodscommonly used in the spatial analysis,Ordinary kriging,three splines for special interpolation and inverse distance weighted were compared and analyzed through Geo-statistics,mathematical function and geometric method.According to advantages and disadvantages with the limitations of the three methods,the uniform discrete point sets and the non-uniform discrete point sets were selected for comparison.The cubic trend surface model and somerelated software such as MATLAB,ArcGIS,GS ＋ Version were used to carry out the theoretical analysis and processing and the variation of these three methods in the local interpolation error was found out.Simultaneously,a best option was showed out to the costumers using spatial interpolation methods.
出处
《地理信息世界》
2011年第3期41-45,共5页
Geomatics World
基金
国家自然科学基金项目(50811120111)资助
关键词
空间分析
克里金
三次样条插值
反距离权重倒数
趋势面分析
spatial analysis
kriging
three splines for special interpolation
inverse distance weighting
trend surface analysis
