Store fit output and call them later

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Hussein Kokash 2021年6月20日

Commented: Hussein Kokash2021年6月20日

Accepted Answer: Walter Roberson

Dears, hope all are doing great!

I have the following script I use to read files and then fit them using curve fitting, my goal is to store the output of the fit for each file so that I can plot them all using the same x-axis, so the idea is to replace y values with the new fit output for each file , how is that possible?

谢谢你,一个ppreciate it.

[file_list, path_n] = uigetfile('.txt', 'Multiselect', 'on');

filesSorted = natsortfiles(file_list);

if iscell(filesSorted) == 0;

filesSorted = (filesSorted);

end

for i = 1:length(filesSorted);

filename = filesSorted{i};

data = load([path_n filename]);

x = data (:,1);

y = data (:,2);

t =数据（1,3）;

Time(i) = T;

% Curve fitting

f = fit（x，y，'fourier1')

%figure(i)

绘图（F，X，Y）

坚持，稍等

formula(f)

coefficients = coeffvalues(f)

end

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Accepted Answer

Walter Roberson 2021年6月20日

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//www.tatmou.com/matlabcentral/answers/860570-store-fit-output-and-call-them-later#answer_728800

f = fit（x，y，'fourier1')

一旦你有的话，你可以记录 f in a cell array.

Or... you can invoke

                             saved_x{i} = x;
                            
                             saved_y{i} = y;
                            
                             predicted_y{i} = f(x);

Here, predicted_y{i} will become a numeric vector of what the model values predict for the given x values; you would not need the fit object after that.

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Hussein Kokash 2021年6月20日

Superb!

Thank you!

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