I know that least square method work like this:
[name]=lsqcurvefit(@obj_fun,x0,xDATA,yDATA);
where x0 is the initial values which I choose. I have also xDATA and yDATA but I have one more variable in my objective function as following
obj_fun=Z*x(1)+x(2)*x(3)-x(3)*x(1)-Y.^2 * x(2) * Z ;
where x(1),x(2),x(3) are unknowns and Z=xDATA (a vector)
I also want to pass the values of Y in objective function which is a vector. If I do like this:
[name]=lsqcurvefit(@obj_fun,x0,xDATA,yDATA,Y); it doesn't work. It works only if put one value of Y before calculation means just fixed Y with a number but I have a vector of Y.
Please help if somebody have experience about this.
Thanks in Advance.
handle=@(x) obj_fun(x,Y)
[name]=lsqcurvefit(handle,x0,xDATA,yDATA,Y);
Treat Y also as a variable .. write Y=x(4). write down your objective function
obj_fun=@(x,xData)xData*x(1)+x(2)*x(3)-x(3)*x(1)-x(4).^2 * x(2) * xData
set your initial guess x0 as follows: x(1) = 1, x(2) = 1, x(2) = 1, x(4) = 0:
x0 = [1 1 1 0];(value will be different in your case)
lsqcurvefit(obj_fun,x0,xData,yData)
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