How to define constraints that result integer numbers in Linear programming?

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Artur M. G. Lourenço
Hello,
i need define the constraints in my linear programming problem, the constraints need to be integer numbers.
e.g.:
f = [28;31].*-1;
A = [3.5 4];
b = [50];
lb = [0;0];
x = linprog(f,A,b,[],[],lb,[])
x = [14.5 0]
if the constraint was integer the value of x become [12 2].
Thank you in advance.

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Shashank Prasanna
Shashank Prasanna 2013-7-16
Mixed Integer constraints is currently not possible with linprog. If you have the global optimization toolbox, you can use GA to solve the problem:
http://www.mathworks.com/help/gads/mixed-integer-optimization.html
If you don't then you can surely find something in File Exchange:
http://www.mathworks.com/matlabcentral/fileexchange/

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Artur M. G. Lourenço

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