How to break the infeasibility of solution for the function linprog?

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Gustave X 2023-1-8

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https://ww2.mathworks.cn/matlabcentral/answers/1890372-how-to-break-the-infeasibility-of-solution-for-the-function-linprog

评论： Gustave X 2023-1-10

采纳的回答： Torsten

Hello everyone,

I'm working on some heuristic algorithm wich has to return to choose another random initial state and run again.

Inside I loop while I have to solve at each iteration a linear programming by using the functon linprog.

How can I break the programme and return it to the initial state choice when there is no feasible solution to the linear programming problem without stopping the whole program?.

Thank you.

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Torsten 2023-1-8

Can't you choose how to proceed depending on the linprog exitflag ?

Gustave X 2023-1-8

sorry but I'm a new user of matlab. However, I know that the error is because of infeasibility reason. I read this https://fr.mathworks.com/help/optim/ug/linprog.html#buusznx-exitflag

but I don't know how to implement it on the program.

Thank you in advance.

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Answer 1

Torsten 2023-1-8

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https://ww2.mathworks.cn/matlabcentral/answers/1890372-how-to-break-the-infeasibility-of-solution-for-the-function-linprog#answer_1144297

移动：Matt J 2023-1-8

在 MATLAB Online 中打开

[x,fval,exitflag,output] = linprog(___)
if exitflag > 0   % linprog was successful
    take action 1
else              % linprog was not successful
    take action 2 
end