多项式拟合的MATLAB工具。只要具有以下几个函数 POLYFITN - A general n-dimensional polynomial fitting tool POLYVALN - An evaluation tool for polynomials produced by polyfitn POLYN2SYMPOLY - A conversion tool to generate a sympoly from the results of polyfitn POLYN2SYM - A conversion tool to generate a symbolic toolbox object from the results of polyfitn