[Octave-bug-tracker] [bug #63173] lsqnonlin from optim 1.6.2 package throws errors in Octave 7.2

[Thomas Madden]

Follow-up Comment #10, bug #63173 (project octave):

Simple example from MATLAB Help Center lsqnonlin won't even work and throws
the same errors as my code...



rng default % for reproducibility
d = linspace(0,3);
y = exp(-1.3*d) + 0.05*randn(size(d));
octave:15> plot( d, y, '.' )
octave:16> fun = @(r)exp(-d*r)-y;
octave:17> x0 = 4;
x = lsqnonlin(fun,x0)
error: 'fields2cell' undefined near line 75, column 14
error: called from
    __jacobian_constants__ at line 75 column 12
    __nonlin_residmin__ at line 415 column 5
    nonlin_residmin at line 99 column 25
    lsqnonlin at line 264 column 21
octave:19> 




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