通用三次样条插值函数，可求解离散点的三次样条插值-General cubic spline interpolation function, can solve the discrete points of the cubic spline interpolation

matlab用于散点插值的程序代码，为克里金插值算法，代码全，有很大的参考性-matlab program code for scattered point interpolation, kriging interpolation algorithm, code-wide, there is a lot of reference