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Can linprog give an integer value of x's?

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Hi
I have a linprog code that has x1,x2,x3 and x4 in the objective function.
The results I get give me values in the form: x = 6.6667 0.0420 0 0
Which in the case I am trying to model doesn't make physical sense because the x's represent the number of units of a specific technology, and therefore for example 0.0420 doesn't in fact exist. Is there anyway to "force" linprog to find the optimum integer value of x?
Thank you

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Accepted Answer

Richard Brown
Richard Brown on 2 Jul 2012
No there isn't. Integer linear programming is a different beast. Perhaps this one from the file exchange might help:
Alternatively, I'm pretty sure there are matlab bindings available for glpk

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Andrew Alkiviades
Andrew Alkiviades on 2 Jul 2012
thanks Richard I will give it a go!
Seth DeLand
Seth DeLand on 17 Mar 2014
As of R2014a, there's a new function "intlinprog" in Optimization Toolbox designed to solve such problems: http://www.mathworks.com/help/optim/ug/intlinprog.html

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