I keep getting error for undefined function or variable, and I am not sure how to fix it

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Naveed Hossain
Naveed Hossain 2018-9-3
评论： Naveed Hossain 2018-9-3
I am getting error on line 5 for the code below. My Y1 and Dmge is already in the workspace, but they keep saying that my 'x' is an undefined variable or function. Same for my 'y'.
function E=goemp_fit(x0)
A = x0(1); B=x0(2); C=x0(3);
x=Y1;
y = Dmge;
E = sum((A*exp(-exp(-B*(x-C)))-y).^2);

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Greg
Greg 2018-9-3
编辑：Greg 2018-9-3
Post the full error text. I'm pretty sure it doesn't say line 5.
Y1 and Dmge might be defined in your base workspace, but goemp_fit is a function. Read the documentation of function workspaces. In short, they have no acess to the base workspace, so Y1 and Dmge are unknown, hence the error (on line 3, not 5).

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