topic Constraint for specific set of Varibles in Mathematical Optimization, Discrete-Event Simulation, and OR

Constraint for specific set of Varibles

user24feb — Tue, 28 Jul 2015 08:32:24 GMT

Hello,

how do you define a constraint for a specific set of variales (using "in" not GE or LE, etc.)? For example, instead of:

Con Cns_Ex{c in Components:c="R2"}:Sum{p in Products} X

*Qty[p,c]<=8;

I would like something similar to:

Con Cns_Ex{c in Components:c in ("R2", "R5")}:Sum{p in Products} X

*Qty[p,c]<=8

Thanks&best regards

RobPratt — Tue, 28 Jul 2015 14:12:41 GMT

Here are two ways (note the curly braces instead of parentheses):

Con Cns_Ex{c in Components:c in {"R2", "R5"}}:Sum{p in Products} X

*Qty[p,c]<=8;

Con Cns_Ex{c in Components inter {"R2", "R5"}}:Sum{p in Products} X

*Qty[p,c]<=8;

If you know that "R2" and "R5" are both in Components, you can make it even simpler:

Con Cns_Ex{c in {"R2", "R5"}}:Sum{p in Products} X

*Qty[p,c]<=8;