I am presently working on converting a large AMPL/CPLEX model so I can
learn how the model works and also to compare the execution times with
CPLEX. I have managed to fix most of the obvious problems but I have a
couple of issues that I need to ask for help from the GLPK experts.
The first one is a syntactical one:
Here is the AMPL code:
var BP >= 0;
BP = sum {t in DAYS, Cid in BANKING_CONTRACTS} (DBQ[t,Cid] +
DWQ[t,Cid]) * 0.0001
This code fails with "BP multiply declared" error.
I thought it may have been an AMPL defined variable but I have tried a
number of different formulations using the WikiBook as a guide but
havent had any success.
Any ideas?
Regards,
Harley
-----
Dr. Harley Mackenzie
HARD software
[email protected]
www.hardsoftware.com
+ 61 3 5222 3435
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