Error using barrier Objective function is undefined at initial point. Fmincon cannot continue.

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Az.Sa 2023-4-13

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1946703-error-using-barrier-objective-function-is-undefined-at-initial-point-fmincon-cannot-continue

Locked: Rena Berman 2024-6-5

在 MATLAB Online 中打开

Hi, after running my code

R=readmatrix(filename1);
    R=R.';
    w=readmatrix(filename2);
    gamma = 2;
     Aeq = ones(1,68);
    beq = 1;
    lb = zeros(68,1);
    ub = ones(68,1);
    x0=0.0147*ones(1,68);
    u = @(x) 1/(1-gamma)*x.^(1-gamma); 
   obj = @(x)-sum(u(x*w*R));
   x = fmincon(obj,x0,[],[],Aeq,beq,lb,ub);

I recived the following error

      Error using barrier
Objective function is undefined at initial point. Fmincon cannot continue.
Error in fmincon (line 824)
    [X,FVAL,EXITFLAG,OUTPUT,LAMBDA,GRAD,HESSIAN] =
    barrier(funfcn,X,A,B,Aeq,Beq,l,u,confcn,options.HessFcn, ...

I run the same code before but with a lees number of data and it works perfectly. Can you please help me what is wrong with my code ?

Thanks in advance

:::: UPDATE

after my discussion with Torsten : here

I reads my data carefully and found the problem with my data

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Az.Sa 2023-4-15

Thanks Walter. I apprecaite the time everyone spend it here to help . I did not want to mislead the reader since my data cause the problem. I tried to accept Torsten answer but I could not

Rik 2023-4-17

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Original question:

Error using barrier Objective function is undefined at initial point. Fmincon cannot continue.

Hi, after running my code

R=readmatrix(filename1);
    R=R.';
    w=readmatrix(filename2);
    gamma = 2;
     Aeq = ones(1,68);
    beq = 1;
    lb = zeros(68,1);
    ub = ones(68,1);
    x0=0.0147*ones(1,68);
    u = @(x) 1/(1-gamma)*x.^(1-gamma); 
   obj = @(x)-sum(u(x*w*R));
   x = fmincon(obj,x0,[],[],Aeq,beq,lb,ub);

I recived the following error

      Error using barrier
Objective function is undefined at initial point. Fmincon cannot continue.
Error in fmincon (line 824)
    [X,FVAL,EXITFLAG,OUTPUT,LAMBDA,GRAD,HESSIAN] =
    barrier(funfcn,X,A,B,Aeq,Beq,l,u,confcn,options.HessFcn, ...