Initializing help system before first use

# problem.nextIIS

Purpose
Continues the search for further Irreducible Infeasible Sets (IIS), or calls problem.firstIIS if no IIS has been identified yet.
Topic areas
Infeasibility, Optimizer
Synopsis
`status = problem.nextIIS()`
Return value

status | The status after the search:
0 | success;
1 | no more IIS could be found, or problem is feasible if no problem.firstIIS call preceded;
2 | on error.

Further information
1. Returning multiple IISs is supported only for linear problems.
2. A model may have several infeasibilities. Repairing a single IIS may not make the model feasible. For this reason the Optimizer attempts to find an IIS for each of the infeasibilities in a model. You may call the problem.nextIIS function repeatedly, or use the problem.IISAll function to retrieve all IIS at once.
3. This function is not affected by the control MAXIIS.
4. If the problem has been modified since the last call to problem.firstIIS or problem.nextIIS, the generation process has to be started from scratch.
Related topics
problem.getIISData, problem.IISAll, problem.clearIIS, problem.firstIIS, problem.IISIsolations, problem.printIIS, problem.IISStatus, problem.writeIIS
Parent Topic Methods of the class problem

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