[Coin-lpsolver] Correct way to disable messages in Coin

[John J Forrest]

Jean-Sebastien,

One way is to override the message handler with one of you own - see 
COIN/Clp/Test/MyMessageHandler.cpp/.hpp.

However looking at the code a much simpler way would be to allow you to 
set the level to -1.  Try changing line 253 of CoinMessageHandler.cpp to 
if (value >=-1) and then set the level to -1.  If that does what you want 
then I will put the change in cvs.

John Forrest



Jean-Sebastien Roy <js at jeannot.org> 
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03/20/2004 09:42 AM

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[Coin-lpsolver] Correct way to disable messages in Coin






Hi !

I use:

OsiClpSolverInterface solver1;
SbbModel model(solver1);

To create a new SbbModel, then:

model.solver()->messageHandler()->setLogLevel(0);
model.messageHandler()->setLogLevel(0);

To disable messages (as found in SbbParam.cpp). Most messages disapear, 
yet if I use the presolve using:

model.solver()->setHintParam(OsiDoPresolveInInitial,true,OsiHintTry);

I get messages like:

Clp3002W Empty problem - 0 rows, 0 columns and 0 elements

And:

Coin0507I Presolve determined that the problem was infeasible with 
tolerance of 1e-08

What is the correct way to disable all messages ?

Thank you very much in advance !

Regards,

js
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