Altering Default MaxFunEvals
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Hi, I'm having trouble altering the default number of evaluations (300) of an fsolve. My .m file looks like this (function omitted):
function solveeqs()
guess=[1.6 0 300];
options = optimset('MaxFunEvals',1e10);
[result, fval, exit, output]=fsolve(@eqns, guess);
result
fval
eqns(guess)
exit
output
end
I thought that the options command might fix it, but the output defines the evaluation limit at 300 anyways. Any tips?
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Sean de Wolski
2012-2-2
You're not passing the options structure to fsolve()
options = optimset('MaxFunEvals',1e10);
[result, fval, exit, output]=fsolve(@eqns, guess,options);
Just make sure options is defined before you call fsolve.
3 个评论
Sean de Wolski
2012-2-2
The default maxfunevals is 100 times the number of variables. Can you post _exactly_ what you are running?
I would worry a little that there is something more seriously wrong if it has not converged after that nmany iterations.
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