Nonlinear Optimization problem in Matlab
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Talal Alharbi
on 7 Mar 2019
Commented: Talal Alharbi
on 14 Apr 2019
Hi
I hve problem when I use x(0) in nonlinear constraint in my code and I have to start with x(0)!.
Please, Could any one solve this issue. I have to solve it to find the lower and upper bounds.
THE ERROR:
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Accepted Answer
David Wilson
on 10 Apr 2019
Are you confusing x0, the start guess with x(0), which does not exist. In your constraint, you write x(0). If that is really what you want, then you need to roll your indices on by one. But somehow I doubt it. If you hadpasted your code, I'd have taken a look at it.
3 Comments
Walter Roberson
on 14 Apr 2019
You assign the output of the first fmincon() call to a pair of variables named x and fmincon . When you do that, fmincon becomes a numeric scalar instead of a function, and the [x,fval] = fmincon(etc) that you have becomes a request to index into the scalar named fmincon and somehow return two different variables from that, which is not possible from an indexing operation.
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