Failure in initial objective function evaluation. FMINCON cannot continue.

Hi

I'm trying to optimize a system with the fmincon function and i'm using an erreurtest (ER = erreurtest(a,b,c,d,AP)) function that uses the first function ([tab_xy] = parcourstest (a,b,c,d,AP)) as well. When the fmincon function is disable, everything works out but when i'll trying to run it, I have a not enough input arguments in the line of the 2nd function.

Message error as shown:

Not enough input arguments.

Error in erreurtest (line 11)
[tab_xy] = parcourstest(a,b,c,d,AP);

Error in fmincon (line 536)
      initVals.f = feval(funfcn{3},X,varargin{:});

Error in ProjetMEC729 (line 33)
fmincon(@erreurtest,x0,A,B,Aeq,Beq,lb,ub)

Caused by:
    Failure in initial objective function evaluation. FMINCON cannot continue.

Answer 1

[Walter Roberson]

http://www.mathworks.com/help/matlab/math/parameterizing-functions.html

[Etienne Brunet]

Thank you for your time

Not sure if I get the parameterizing point? I've been trying with the erreurtest but I'm seeing to be creating other problems.

[Walter Roberson]

fmincon(@(a) erreurtest(a,b,c,d,AP), x0, A, B, Aeq, Beq, lb, ub)

Presuming, that is, that b, c, d, and AP are to be considered constants for the purpose of minimization with changing a, and x0 is the same size as a is.

If instead you are trying to find the values of a, b, c, d, AP that together minimize erreurtest and they are all scalars, then you should be using

fmincon(@(x) erreurtest(x(1),x(2),x(3),x(4),x(5)), x0, A, B, Aeq, Beq, lb, ub)

and x0 would have to be a vector of length 5.

[Etienne Brunet]

Thank you very much it works now!!