Re: lsqnonlin optimset display iter

[Olaf Till]

On Thu, Jan 23, 2020 at 02:40:00AM -0600, hydrantomat wrote:
> I am trying to solve an ODE and to fit the resulting function to measured
> data points with the lsqnonlin function. Variation of the parameter "k"
> should fit the function to the data points. This works quite well.
> 
> However the optimset function does not display the iterations via
> optimset('Display','iter').

The current implentation of the algorithm doesn't generally print out
something at iteration starts even with this setting.

You can work around with the option "user_interaction" if you use
nonlin_residmin, or with the option "OutputFcn" if you use the
Matlab-compatibility wrapper lsqnonlin. Type (from the Octave prompt)
'optim_doc ("common optimization options")' for information on the
former and 'help lsqnonlin' for the latter.

Olaf

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