On Wed, 2 Sep 1998, Rene Brun wrote: > By default, Root creates a TMinuit object with 25 parameters. > If you need more parameters, simply, do > new TMinuit(55); How it differs from: gMinuit = new TMinuit(55); ? I have another question: what to do, if I want to fix (not optimize at all) some parameters in TGraph::Fit ? I have quite good starting values for them. Before I run TGraph::Fit, I may not use gMinuit->mnfixp and then gMinuit->mnfree (or may I?). After I run TGraph::Fit all my parameters are changed. I would suggest to add some "I" - init only option to ::Fit() - it would perform everything without calling gMinuit->mnmigr() and printing statistics. Then I have the gMinuit ready to run, but I can fine tune some parameters and run it then. Regards, -- Tomasz Motylewski
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