地统计分析在ArcGIS和IDRISI中实现特点的讨论

A Discussion on Realization of Integrating Geostatistics in ArcGIS and IDRISI

ArcGIS和IDRISI两个软件实现了将地统计分析功能整合到GIS中,但是它们的功能和操作性如何,还没有做过较详尽的比较讨论。文章运用深圳市自动气象站31个站点2005-9-23140000时实测气温数据图层,采用相同的各项参数,对比分析了ArcGIS和IDRISI在半方差图表的设计、数据空间结构特征分析和提取(主要是各向异性和趋势分析和处理)、预测点邻域定义和普通克利金插值等方面实现的特点。结论是,ArcGIS自动化程度高,更基于算法;IDRISI自动化程度低,更基于知识。

Both of ArcGIS and IDRISI have realized integrating the geostatistical analysis in them.But how well do they do in realizable function and convenient operation have not been discussed.This paper analyzes contrastively designing semivariogram chart,identifying and dealing with the spatial structure of sample data,defining the neighborhood of unknown locations and realizing the ordinary kriging interpolation in ArcGIS and IDRISI,The conclusion is that the ArcGIS has much automatization and is based more on algorithm,but the IDRISI has less automatization and is based more on knowledge.