Switching from RooMinuit to RooMinimizer

jonas · October 25, 2023, 12:18pm

That’s correct!

As a side note, you can also look at the old code of RooMinuit to see what RooMinimizer routines the characters in the option string correspond to:

github.com

root-project/root/blob/v6-24-00-patches/roofit/roofitcore/src/RooMinuit.cxx#L269


      
          ///
          ///  s - Run Hesse first to estimate initial step size
          ///  m - Run Migrad only
          ///  h - Run Hesse to estimate errors
          ///  v - Verbose mode
          ///  l - Log parameters after each Minuit steps to file
          ///  t - Activate profile timer
          ///  r - Save fit result
          ///  0 - Run Migrad with strategy 0
          
          RooFitResult* RooMinuit::fit(const char* options)
          {
            if (_floatParamList->getSize()==0) {
              return 0 ;
            }
          
            _theFitter->SetObjectFit(this) ;
          
            TString opts(options) ;
            opts.ToLower() ;