1 #ifndef ALIHISTTOOLSDIHADRONPID_H
2 #define ALIHISTTOOLSDIHADRONPID_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
22 class AliHistToolsDiHadronPID {
25 AliHistToolsDiHadronPID() {};
28 ~AliHistToolsDiHadronPID() {};
32 // Histogram Manipulation.
33 static TH1F* RebinVariableBinning(const TH1F* histIn, const Double_t* binsx, Int_t Nbinsx, Bool_t density = kTRUE);
34 static TH1F* RebinVariableBinning(const TH1F* histIn, const TH1F* histAxis, Bool_t density = kTRUE);
35 static TH1F* RebinVariableBinning(const TH1F* histIn, const TAxis* xaxis, Bool_t density = kTRUE);
36 static TH1F* TrimHisto(const TH1F* histo, Int_t firstbin, Int_t lastbin);
37 static void ConstMinusHist(TH1F* histo, Float_t cc = 1);
38 static TH3F* MakeHist3D(const char* name, const char* title,
39 Int_t nbinsX, Double_t minX, Double_t maxX,
40 Int_t nbinsY, Double_t minY, Double_t maxY,
41 Int_t nbinsZ, const Double_t* zaxis);
43 // Creating histograms from other histograms or functions.
44 static TH2F* Function2DToHist2D(const TF2* function, const TH2* grid);
46 // Histogram Visualization.
47 static TCanvas* CreateSpectraComparison(const char* name, const char* title, const TH1F* h1, const TH1F* h2, Int_t markerstyle = 8, Bool_t logy = kTRUE);
50 static Double_t* CreateAxis(Int_t nbins, Double_t min, Double_t max);