gstl 是一个用于地理统计的完善的工具与算法库（c++）。目前最新版本是1.3

This toolbox is almost entirely made up of functions from the book by Deutsch and Journel (1992) and from the paper by Marcotte (1991). The variogram functions are MEX-files compiled from the former while the cokriging functions were published, in M

克里金插值法的应用，英文原版论文，很不错，强烈推荐。