Error: no member named 'read' and 'append' in 'RooDataHist'?

Roofit and RooStats
1

Dear Experts,
I was doing toy study and generated one toy with 2.4 Million signal as input.
I tried to fit it with RooDataSet and it is taking very long time. That is why I decided to switch to RooDataHist.

But I have started getting following error:

error: no member named ‘read’ in ‘RooDataHist’
error: no member named ‘append’ in ‘RooDataHist’

Could anyone let me know the replacement of these syntax in RooDataHist ? I have attached the macros also that I am using to fit the toy.
fit_toydata.C (12.7 KB)

Thanks in Advance.

Regards
Souvik

2

Hello,

If your input data are unbinned you cannot use the RooDataHist as before. You need to bin your data by creating an histogram from the RooDataSet, using RooDataSet::createHIstogram and then from the histogram you can create the RooDataHist for fitting.

Lorenzo

3

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