Curve Fitting Tool starting points

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Hi all,
I currently working with the Curving Fitting Tool and I would like to know how the toolbox generate the starting points for the optimization (see image attached)
In the website of the toolbox they say that one of the key features are the "optimized starting points" but they don't mentioned anything else about it.
Does anyone know how they are calculated?
Best,
Ana

Accepted Answer

Payas Bahade
Payas Bahade on 20 Mar 2020
Edited: Payas Bahade on 20 Mar 2020
Hi Ana,
Start points for curve fitting are calculated in following ways:
  1. Starting points for some library models are determined heuristically if no start points (the default value of an empty vector) are passed to the fit function.
  2. For rational and Weibull models, and all custom nonlinear models, the toolbox selects default initial values for coefficients uniformly at random from the interval (0,1).
Similar question has been answered in community, please refer this link.
For more details, please refer this doc link on StartPoint.
Hope this helps!
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