No feasible solution found when using intlinprog
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I am using "intlinprog" to solve a system of linear equations. The "f" matrix is a 1x180 matrix. Can intlinprog process large matrices like this? I have 12 unknowns with 7 equality constraint equations.
4 个评论
Ameer Hamza
2018-6-28
编辑：Ameer Hamza
2018-6-28
You said there are 12 unknowns. Shouldn't f be [1 x 12]?
Steve Grikschat
2018-6-28
I'm not sure why you are using intlinprog for this. Are you restricting the solution of the system to be integer (or partly integer)?
Either way, I would agree with Ameer in that I'm unsure how you got a 180-element vector.
If the system is 7 equations with 12 unknowns, then intlinprog's Aeq input should be a 7x12 matrix.
Additionally, 180 variables or constraints is not too much for intlinprog.
Are you sure that there is a solution to the problem?
Austin Brehm
2018-6-28
Ameer Hamza
2018-6-28
The Display property of intlinprog() is already set to 'iter', which mean it already displays the result of each iteration by default. I am not sure whether you will be able to access any more information than that but you can give this link a try: https://www.mathworks.com/help/matlab/math/output-functions.html#bsgpq6q-31
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Steve Grikschat
2018-6-29
1 个投票
If you are referring to intermediate feasible solutions you can use the built-in OutputFcn savemilpsolutions:
Just a warning: if there is no objective function for the problem (or it is all zero), then as soon as intlinprog finds any integer feasible solution, it will stop.
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