this is my code i am getting error with x = simulannea​lbnd(Objec​tiveFuncti​on,X0,ydat​a,lb,ub). can help me to resolve it

function y = parameterized_objective(x,xdata)
      y =x(1)./((x(2).*(xdata.^(1+0.9)))+x(3).*(xdata.^(0.9))+1);
ydata=(0.2575./((xdata.^2)+(0.333.*xdata)+1));
xdata =[ 10.^(-5) 10.^(-4) 10.^(-3) 10.^(-2) 10.^(-1) 1]  ;
ObjectiveFunction = @(x)parameterized_objective(x,xdata);
 X0 = [0; 0; 0 ];
 lb = [0.2; 0.2;  0.2];
 ub = [1; 1; 1];
 x = simulannealbnd(ObjectiveFunction,X0,ydata,lb,ub)

Answer 1

[Walter Roberson]

The simulannealbnd function does not expect ydata to be passed to it. You might need

ObjectiveFunction = @(x)parameterized_objective(x,xdata,ydata);

   x = simulannealbnd(ObjectiveFunction,X0,lb,ub)

having changed parameterized_objective to expect ydata

[ash]

Thanks for reply...but still i am getting error Error in x = simulannealbnd(ObjectiveFunction,X0,lb,ub)

Caused by: Failure in initial user-supplied objective function evaluation.

[Walter Roberson]

I need to see your code for parameterized_objective

[ash]

First two lines i am writting as a fuction and other lines separately...waiting for your reply again..Thanks

[Walter Roberson]

Your code

function y = parameterized_objective(x,xdata)
    y =x(1)./((x(2).*(xdata.^(1+0.9)))+x(3).*(xdata.^(0.9))+1);

does not appear to have a need for ydata. Why was it that you were passing ydata to simulannealbnd ? Were you trying to do a fitting? If so then you should be using

xdata =[ 10.^(-5) 10.^(-4) 10.^(-3) 10.^(-2) 10.^(-1) 1]  ;
ydata=(0.2575./((xdata.^2)+(0.333.*xdata)+1));

parameterized_objective = @(x,xdata) x(1)./((x(2).*(xdata.^(1+0.9))) + x(3).*(xdata.^(0.9))+1);

ObjectiveFunction = @(x) sum((parameterized_objective(x,xdata) - ydata).^2);
X0 = [0; 0; 0 ];
lb = [0.2; 0.2;  0.2];
ub = [1; 1; 1];
x = simulannealbnd(ObjectiveFunction, X0, lb, ub)

[ash]

Now my code is working..Thanks a lot...