Sum of sines optimized starting points

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Andrew
Andrew 2023-11-22
编辑： Torsten 2023-11-23
Dear community,
Matlab uses optimized starting points to fit a sum of sines model to data in the Curve Fitting Toolbox.
Does somebody know the algorithm MATLAB uses to determine the starting points? I have a slightly different sines model, but the optimized starting points are not available for custom equations.
Best regards,

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Torsten
Torsten 2023-11-23
编辑：Torsten 2023-11-23
https://uk.mathworks.com/matlabcentral/answers/511413-curve-fitting-tool-starting-points
If your problem is linear in the fitting parameters (which is usually the case for a sum of sines), you don't need initial values for the parameters. You can directly determine the parameters in one step by solving an overdetermined linear system of equations.

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