[Octave-bug-tracker] [bug #57446] fminsearch fails due to undocumented Matlab feature of passing extra parameters

[Nick]

Follow-up Comment #2, bug #57446 (project octave):

Thanks for the response Kai, very helpful!

My function fssr is contained in it's own file (fssr.m). The function is
rather long but takes vectors x,y,xmax and ymax as arguments and then
minimises two parameter contained in pm0. I would like to write something like
the below with the anonymous function, but it does not work. y is undefined
when fssr is called (y is the first argument used in fssr).

I would much appreciate any advice
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f = @(pm0, x, y, xmax, ymax)fssr;

%Define test data
c = magic(5);
y = c(:,2); x = c(:,1); ymax = c(:,4); xmax = c(:,3);
    
%Create anonymous function
fun = @(pm0)f(pm0, x, y, xmax, ymax);

%Define initial guess
pm0 = [-3; -2];  

%Search for minimum   
[pm, ssr] = fminsearch(fun, pm0)

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