how to pass parameters to fmincon when using OutputFcn

Hello, I have one problem with the "fmincon". Thank you for any help. I have to pass some parameters 'a' to the objective function and constraints, if I do no need the "OutputFcn", just run "fmincon(@fun,x0,[],[],[],[],lb,ub,@nonlcon,options,a)".

If the "OutputFcn" has to be used for iterative info, the pervious command gives the error infomation as:

Error using ==> runfmincon>outfun
Too many input arguments.
Error in ==> callAllOptimOutputFcns at 12
    stop(i) = feval(OutputFcn{i},xOutputfcn,optimValues,state,varargin{:});
Error in ==> nlconst>callOutputAndPlotFcns at 1056
            stop = callAllOptimOutputFcns(outputfcn,xOrigShape,optimValues,state,varargin{:}) || stop;
Error in ==> nlconst at 608
           [xOrigShape, optimValues, stop] = callOutputAndPlotFcns(outputfcn,plotfcns,caller,XOUT, ...
Error in ==> fmincon at 696
    [X,FVAL,LAMBDA,EXITFLAG,OUTPUT,GRAD,HESSIAN]=...
Error in ==> runfmincon at 13
xsol = fmincon(@objfun,x0,[],[],[],[],[],[],@confun,options,a);

what I can do to realize the paramter passing?

Thank you again!

Answer 1

[Walter Roberson]

Do not pass "a" at the end of the fmincon list. Instead use anonymous functions to pass it. For example,

fmincon( @(x,t) objfun(x,t,a), x0, ...., options)

[J T]

works, thank you.