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

[user24feb]

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 · Accepted solution]

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]

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.)