"nonlincon" part of the "fmincon" function in the optimization toolbox

Question

Itachi 2012-8-18

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https://ww2.mathworks.cn/matlabcentral/answers/46272-nonlincon-part-of-the-fmincon-function-in-the-optimization-toolbox

Hi guys, I want to create the "nonlincon' part of the "fmincon" function. I want to be able to call other variables in the nonlincon function like this:

function [c,ceq]=nonlincon(x,variable1,variable2,...,variableN)

but it gives this error:

Error in fmincon (line 681)
        [ctmp,ceqtmp] = feval(confcn{3},X,varargin{:});
Caused by:
    Failure in initial user-supplied nonlinear constraint function evaluation. FMINCON cannot
    continue.

Please help me out, thanks in advance.

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Answer 1

Elizabeth 2012-8-18

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What if you globalize the variables that you want to define in the nonlcon function. You would write global variable1.. global variableN in both nonlcon and your main program.

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Answer 2

Alan Weiss 2012-8-22

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You will probably be happier in the long run if you include your extra variables in a function handle or nested function rather than as global variables. See the documentation on passing extra parameters.

Alan Weiss

MATLAB mathematical toolbox documentation