Matlab自带的曲线拟合程序

最新推荐文章于 2024-12-21 16:00:00 发布

youyo2113

最新推荐文章于 2024-12-21 16:00:00 发布

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这个函数的功能是能自动搜索参数的取值，从而使得方程的误差最小。

效果如下

matlab计算曲线拟合度的程序

代码如下

%% Optimal Fit of a Non-linear Function
% This is a demonstration of the optimal fitting of a non-linear function to a
% set of data.  It uses FMINSEARCH, an implementation of the Nelder-Mead simplex
% (direct search) algorithm, to minimize a nonlinear function of several
% variables.
%
% Copyright 1984-2002 The MathWorks, Inc. 
% $Revision: 5.15 $ $Date: 2002/04/02 17:52:33 $

%%
% First, create some sample data and plot it.

% t = (0:.1:2)';
% y = [5.8955 3.5639 2.5173 1.9790 1.8990 1.3938 1.1359 1.0096 1.0343 ...
%      0.8435 0.6856 0.6100 0.5392 0.3946 0.3903 0.5474 0.3459 0.1370 ...
%      0.2211 0.1704 0.2636]';

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