Hi all, i get this error at using GA optimtool " error running optimization. matrix dimensions must agree" so kindly can any one explain what is the problem.

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mohamed afifi 2017-2-26

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评论： RAJENDRA KUMAR SHARMA 2020-5-27

I have nonlinear constrained optimization problem (optimum selection of relay settings). when trying to solve it using genetic algorithm (using optimtool box) it generates this error "error running optimization. matrix dimensions must agree" although it is solvable using fmincon with the same objective and constraints functions.

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Alan Weiss 2017-2-27

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fmincon is more forgiving about the orientation of your variables, allowing you to pass arrays of any dimension, as described here. ga requires that your control variables be row vectors. You probably assume, in your objective or constraint functions, that the variables are column vectors or some multidimensional array.

Alan Weiss

MATLAB mathematical toolbox documentation

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Alan Weiss 2017-3-2

I could not understand what your program is doing because I have no idea what SystemModel(); is.

Use the debugger with Optimization Toolbox™ the same way you would use it with plain MATLAB code. Step through things one at a time. Write an output function or use a plot function to see the values that are being passed to ga, or just put a break point in ga which is, after all, MATLAB code.

Good luck,

Alan Weiss

MATLAB mathematical toolbox documentation