包括基本的克里金(Kriging)插值法实现代码，仅实现基本方法部分，不包含扩展克里金方法-　　　kriging uses ordinary kriging to interpolate a variable z measured at

　　　locations with the coordinates x and y at unsampled locations xi, yi.

　　　The function requires the variable vstruct that contains all

　　　necessary information on the variogram. vstruct is the forth output

　　　argument of the function variogramfit.



　　　This is a rudimentary, but easy to use function to perform a simple

　　　kriging interpolation. I call it rudimentary since it always includes

　　　ALL observations to estimate values at unsampled locations. This may

　　　not be necessary when sample locations are not within the

　　　autocorrelation range but would require something like a k nearest

　　　neighbor search algorithm or something similar. Thus, the algorithms

　　　works best for relatively small numbers of observations (100-500).

　　　For larger numbers of observations I recommend the use of GSTAT.



　　　Note that kriging fails if there are two or more observa