Hi Benoit, If you use TMinuit directly, do: gMinuit->Command("SET PRINT -1"); you can see the status with gMINUIT->Command("SHOW PRINT"); If you use TMinuit via TH1::Fit or TGraph::Fit, use the option "Q" h->Fit("gaus","q") Rene Brun On Wed, 27 Nov 2002, Benoit Revenu wrote: > Hi Rooters, > > Is it possible to turn off ALL output messages on stdout of TMinuit ? >
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