Display IIS (irreducible infeasibility system)

[arr...@gmail.com]

Hi Bob, 

           You mentioned that CPLEX can run iis detection after find a problem integer infeasible. I tried that. However, since my model is big. I have a lot of rows with status "non", meaning not in the iis system. This is very inconvenient for me to spot the ones that are in the iis.  Do you know if I can just print out those in the iis ?    

   

            Thanks!

Feng

[Robert Fourer]

I think you are looking for the answer given here:

https://groups.google.com/d/msg/ampl/Z6i8qCdbQ-Q/M1eGhbG_aikJ

Bob Fourer
am...@googlegroups.com

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[arr...@gmail.com]

Hi Bob, that is exactly what I wanted.  Thanks!