- void Add(AliTRDCalibraVdriftLinearFit *ped);
- TH2F *GetLinearFitterHisto(Int_t detector, Bool_t force=kFALSE);
+ void Add(const AliTRDCalibraVdriftLinearFit *ped);
+ TH2S *GetLinearFitterHisto(Int_t detector, Bool_t force=kFALSE);
+ TH2S *GetLinearFitterHistoForce(Int_t detector);
+ TH2S *GetLinearFitterHistoNoForce(Int_t detector) const { return (TH2S*)fLinearFitterHistoArray.UncheckedAt(detector);};