Source localization now require optimization toolbox

[arnodelorme]

The source localization code use to work even without the optimization toolbox. Now it generates an error if the toolbox is not present.

load('-mat', 'tmp.mat');
ft_inverse_dipolefit(sourcemodel, sens, headmodel, dat, varargin{:})

tmp.mat.zip

[robertoostenveld]

as far as I know we have not made any relevant changes to this. And both of these work for me with your data:

dip1 = ft_inverse_dipolefit(sourcemodel, sens, headmodel, dat, varargin{:}, 'optimfun', 'fminsearch')
dip2 = ft_inverse_dipolefit(sourcemodel, sens, headmodel, dat, varargin{:}, 'optimfun', 'fminunc')

The optimset that I have on my computer (where I do have the optimization toolbox installed) is /Applications/MATLAB_R2023b.app/toolbox/matlab/optimfun/optimset.m which is not in the optim toolbox. Also according to https://nl.mathworks.com/help/matlab/referencelist.html?type=function&s_tid=hc_panel the optimset function is part of standard MATLAB, not of the optimization toolbox.

I have the suspicion that something is messed up with your path or MATLAB installation.

[arnodelorme]

Yes, I removed the optimization toolbox path

rmpath('/Applications/MATLAB_R2024a.app/toolbox/matlab/optimfun/');

Note that this was reported by a user to me that did not have the optimization toolbox and I tried to reproduce it on my machine. The code line 167 to 183 seems to require the optimset function that is only in the optimization toolbox.

[robertoostenveld]

optimset is not only in the optimization toolbox, it is also used for the fminsearch function that is part of the matlab (standard) toolbox

[robertoostenveld]

I believe that the optimization toolbox lives in /Applications/MATLAB_R2023b.app/toolbox/optim. But the organization of the directories is less clear than it was in the past.