writing an objective function (intlinprog)

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Gratitude Kim 2017-9-5

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https://ww2.mathworks.cn/matlabcentral/answers/355228-writing-an-objective-function-intlinprog

编辑： John D'Errico 2017-9-5

Hi, I am supposed to write minimize P where P>=0. Thus, I created a variable P and declared it to be >=0. Using intlinprog function, When I wrote f=P; I am having this error. Error using intlinprog (line 121) INTLINPROG requires the following inputs to be of data type double: 'f'.

Appreciate your kind assistance.

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Matt J 2017-9-5

intlinprog doesn't accept symbolic-type variables as input. You should describe the problem more fully so we can determine if intlinprog is at all applicable to what you are doing.

If you are minimizing P subject to P>=0 isn't the solution simply P=0?

John D'Errico 2017-9-5

编辑：John D'Errico 2017-9-5

intlinprog does not take a general function as an objective. It does not take a symbolic variable as an objective. intlinprog takes ONLY a linear combination of the variables as an objective, so classically a linear programming problem, where some or all of the variables must be integer. So you need to explain what you want to do.

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