LevenbergMarquardt optimset r2012b

[Huanxin]

dear all, I used a code in matlab 2008a, but when I used in matlab r2012b, the matlab says : "The LevenbergMarquardt option is no longer valid."
the code is : "options = optimset('Display','off','TolX',eps,'TolFun',eps,'LargeScale','on',...
'LevenbergMarquardt');"
so what can I use to change this option? I tried comment this LevenbergMarquardt, it gives the same result for my currently using data, but I am not sure other case it will works or not.
Thank you!

[Alan_Weiss]

See the R2008b release notes:
http://www.mathworks.com/help/optim/release-notes.html

In short, use the Algorithm option in lsqnonlin or lsqcurvefit, and
don't use the LargeScale option at all. If you want to use the
Levenberg-Marquardt algorithm, set the Algorithm option to
'levenberg-marquardt'.

And by the way, I think you have questionable settings for your other
options, too. As explained in
http://www.mathworks.com/help/optim/ug/tolerances-and-stopping-criteria.html
it is usually not a good idea to set tolerances smaler than 1e-14,
unless you have a very good reason for doing so.

Alan Weiss
MATLAB mathematical toolbox documentation

[Huanxin]

Alan_Weiss <awe...@mathworks.com> wrote in message <kmtpr0$q8t$1...@newscl01ah.mathworks.com>...

I used : options = optimset('Display','off','TolX',eps,'TolFun',eps,'LargeScale','on',...
'Algorithm','Levenberg-Marquardt'); it works, I decide to use this. thank you!