Originally posted by: SGrogan

Hello all,

I was talking around the office and learned tha when I export a *.lp file of my CPLEX model I can allow the program to set meaningful names to the decision variables and constraints (i.e. insetad of  "id567-id521 <=0", it would say "x{1,2}-x{1,3}<=0"  the same with constraints, such as MaterialA and MaterialB instead of id1155).  I hope this will allow for me to be able to fin errors in my formulaton faster. 

some googling and I found setName() in the Java API, but i'm using C++ and haven't been able to confirm or deny the existance of setName()  (or something similar) in C++.  any assitance on finding the appropriate functions would be appreciated.

IloNumVar and IloConstraint both inherit from IloExtractable which has a ::setName() member.

There also is IloExtractableArray::setNames() to set the names on an array of variables/constraints.

Originally posted by: SGrogan

Thank you good sir:

Just to round out the answer for any future searchers, this article I found helped me make my variable names:

http://www-01.ibm.com/support/docview.wss?uid=swg21399995

thanks again for your quick answer!