topic Re: Proc Optmodel Constraint Specification for Non-Existing (not missing) Array-Elements in Mathematical Optimization, Discrete-Event Simulation, and OR

Proc Optmodel Constraint Specification for Non-Existing (not missing) Array-Elements

user24feb — Tue, 15 Sep 2015 12:44:34 GMT

Hello,

If this is a constraint (for proc optmodel) I need:

Constraint Example:Sum{<v,'123','ABC'> in v_l_m}X[v]*M[v,'123','ABC'];

.. but the subscript '123' does not exist for all M[v,l,m]'s. (It's not missing, the entry itself has been left out.)

How can I avoid the 'invalid array subscript error'?

Thanks&kind regards

RobPratt — Tue, 15 Sep 2015 13:57:18 GMT

You could intersect with the index set of M (suppose it is called MSET):

Constraint Example: sum{<v,'123','ABC'> in v_l_m inter MSET}X[v]*M[v,'123','ABC'];

user24feb — Wed, 16 Sep 2015 08:59:46 GMT

Thanks, your answer is of course right. But I think I will have a follow-up question. (The "helpful answer option is gone, I believe.)