该算法实现了三次样条的插值算法,要自己学习调用方法,实现结果还是比较客观的,供大家学习使用-The algorithm implements the cubic spline interpolation algorithm, learning method is called to yourself and realize the result was more objective, for everybody to learn

掌握用MATLAB计算拉格朗日,分段线性,三次样条三种插值的方法(Master the MATLAB computing Lagrange, piecewise linear, three kinds of cubic spline interpolation method)