三次样条插值，适用matlab。三次样条插值是通过一系列形值点的一条光滑曲线，数学上通过求解三弯矩方程组得出曲线函数组的过程。-Cubic spline interpolation for matlab. Cubic spline interpolation through a series of key points of a smooth curve, mathematically by solving the three moment equations derived curve function group process.