How to use the Fminsearch in in MATLAB 6.5?

hi,dear all

I have use the Fminsearch successfully in matlab R2008b as follows:

 [x,yy]=fminsearch(@(x) noncon_obj(x,z1,norm_A,norm_B,exva_A,exva_B),x0);

where,noncon_obj is the target function ,'x' is the variable,and 'z1,norm_A,norm_B,exva_A,exva_B' are the parameters .

 function CC=noncon_obj(x,z1,norm_A,norm_B,exva_A,exva_B)
 YY=norminv(exp(-exp((x(2)-exva_A+0.45*exva_B)/(-0.7797*exva_B))));
 CC=sqrt(((log(x(1))-z1(1))/z1(2))^2+((x(1)-x(2)-norm_A)/norm_B)^2+YY^2);

But, the above code fail to work in matlab 6.5,and give Error: "identifier" expected, "(" found.

Then,how to use the Fminsearch in in MATLAB 6.5 for the function "noncon_obj"

Answer 1

[Jiro Doke]

You are using anonymous functions, which were introduced in MATLAB 7, so it won't work in MATLAB 6.5. According to the documentation for fminsearch (for MATLAB 6.5), call it by putting the additional parameters as trailing arguments:

[x,yy]=fminsearch(@noncon_obj,x0,[],z1,norm_A,norm_B,exva_A,exva_B);

Notice the [] to represent empty "options" structure.

[XIAOMING]

thanks very much.It's done.