setting tolerance in lsqcurvefit
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Kerry Hipps
il 19 Mag 2019
Commentato: Star Strider
il 20 Mag 2019
Can someone give me an example of setting the tolerance in lsqcurve fit? I am getting a terrible fit and it is quiting very quickly. I think it should be possibel to do through the optimoptions function, but I can find no examples with numerical input.
Thanks in advance
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Star Strider
il 19 Mag 2019
Bad fits with the nonlinear parameter estimation routines are most likely the result of either the model not correctly describing the process that created the data, or inappropriate initial parameter estimates.
You have to determine that you defined and wrote the objective function correctly. The Global Optimization Toolbox functions in the Global or Multiple Starting Point Search (link) functions can help with the initial parameter estimate problem.
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Star Strider
il 20 Mag 2019
My pleasure.
So it’s not a ‘terrible fit’? Your initial parameter estimates may be the best that lsqcurvefit can estimate.
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