PyROOT plotOn() Normalization option

[Type_Error]

Dear experts,

I want to achieve the Normalization option from C++ to pyROOT

pdf->plotOn(frame,Normalization(n_sig, RooAbsReal::NumEvent));

In pyROOT, I try

pdf.plotOn(frame,ROOT.RooFit.Normalization(n_sig,ROOT.RooAbsReal(NumEvent)))

and

pdf.plotOn(frame,ROOT.RooFit.Normalization(n_sig,ROOT.RooAbsReal.NumEvent))

But they don’t work…, error from ROOT.RooAbsReal(NumEvent). What is the correct format？

[eguiraud]

Hi @Type_Error ,
sorry for the late reply!
We need @moneta or @jonas here, let’s ping them.

In the meanwhile, what’s the exact error message you get?

Cheers,
Enrico

[moneta]

Hi,
The correct one is the third one:

pdf.plotOn(frame,ROOT.RooFit.Normalization(n_sig,ROOT.RooAbsReal.NumEvent))

it should work, if it doesn’t for you, please post the error message and possibly the code reproducing the problem

Cheers

Lorenzo