Roofit

source

RooFitResult* filtres = pdf->fitTo(*data, "<options>");


 - Fitting options:

MINUIT control options:

"m" = MIGRAD only, i.e. no MINOS
"s" = estimate step size with HESSE before starting MIGRAD
"h" = run HESSE after MIGRAD
"e" = Perform extended MLL fit
"0" = Run MIGRAD with strategy MINUIT 0(faster, but no corr. matrix at
end) Does not apply to HESSE or MINOS, if run afterwards.

output options:

"q" = Switch off verbose mode
"l" = Save log file with parameter values at each MINUIT step
"v" = Show changed parameters at each MINUIT step
"t" = Time fit
"r" = Save fit output in RooFitResult object(return values is object
RFR pointer)