CODEWITHSUNDEEP
cplexconstraint-programmingoplmathematical-expressions
Wenie
Wenie

Reputation: 1

Express equation in CPLEX ILOG

i'm currently having a project coding on IBM ILOG Cplex. I've been translating the mathematical model to constraint in CPLEX. here it is, i wonder how we code this constraint on cplex since it has 3 elements. i've try the OR logical but the results seem wrong enter image description here

Upvotes: 0

Views: 188

Answers (1)

Alex Fleischer
Alex Fleischer

Reputation: 10037

Or works fine in OPL but you write that as ||

See example https://github.com/AlexFleischerParis/zooopl/blob/master/zoodisjunction.mod

int nbKids=300;
float costBus40=500;
float costBus30=400;
 
dvar int+ nbBus40;
dvar int+ nbBus30;
 
minimize
 costBus40*nbBus40  +nbBus30*costBus30;
 
subject to
{
 40*nbBus40+nbBus30*30>=nbKids;

//with nb buses 40 less than 3 or more than 7
(nbBus40<=3) || (nbBus40>=7);
}

Upvotes: 0

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