lsqcurvefit help and curve fitting
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Dear Community,
I am trying to fit my mathematical model to the data I was able to retrieve. Currently my graph is showing this:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1351419/image.jpeg)
And followed by this prompt:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1351424/image.jpeg)
Do you know why the system isnt matching the data completely? I applied this to another case and it was able to work but my Dab was 2 orders of magnitude lower
Any help would be greatly appreciated!
-Daniel
3 commentaires
Daniel Alejandro Diaz
le 11 Avr 2023
Modifié(e) : Torsten
le 11 Avr 2023
Torsten
le 11 Avr 2023
Do you see the reason for your problem in the graphics above ? The end concentration you assume is much too high - it should be similar to the asymptotic value to which your measurement data converge (around 0.032).
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