MakeNiceHisto.h

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#ifndef MAKENICEHISTO_H
#define MAKENICEHISTO_H


#include "TStyle.h"
#ifndef ROOT_TFile
#include "TFile.h"
#endif
#ifndef ROOT_TROOT
#include "TROOT.h"
#endif
#ifndef ROOT_TMath
#include "TMath.h"
#endif
#ifndef ROOT_TH1
#include "TH1.h"
#endif
#ifndef ROOT_TH2
#include "TH2.h"
#endif
#ifndef ROOT_TVirtualPad
#include "TVirtualPad.h"
#endif
#ifndef ROOT_TCanvas
#include "TCanvas.h"
#endif
#ifndef ROOT_TF1
#include "TF1.h"
#endif
#ifndef ROOT_TObject
#include "TObject.h"
#endif
/* #ifndef ROOT_TMinuit */
/* #include "TMinuit.h" */
/* #endif */
#ifndef ROOT_TGraphErrors
#include "TGraphErrors.h"
#endif
#ifndef ROOT_TError
#include "TError.h"
#endif
#ifndef ROOT_TClonesArray
#include "TClonesArray.h"
#endif

#ifndef __IOSTREAM__
#include <iostream>
#endif

using std::cout;
using std::endl;

TH1F* HistLog(const char* name, const char* title, Int_t nBins, Double_t xMin, Double_t xMax);
TH2F* HistLogLog(const char* name, const char* title, Int_t nBinsX, Double_t xMinX, Double_t xMaxX, Int_t nBinsY, Double_t xMinY, Double_t xMaxY);
TH2F* HistLogLin(const char* name, const char* title, Int_t nBinsX, Double_t xMinX, Double_t xMaxX, Int_t nBinsY, Double_t xMinY, Double_t xMaxY);
TH2F* HistLinLog(const char* name, const char* title, Int_t nBinsX, Double_t xMinX, Double_t xMaxX, Int_t nBinsY, Double_t xMinY, Double_t xMaxY);
TH1F* HistInvert(TH1* hist);
const Double_t *MakeLogBinning(Int_t nbins, Double_t xmin, Double_t xmax);
TH1F* MakeNiceGraph(TGraph* hist, TVirtualPad* c1 = 0, const char* opt = "*");
TVirtualPad* MakeNiceHisto(TH1* hist, TVirtualPad* c1 = 0, const char* opt = "", Bool_t copy = 1);
void MakeNice1dHisto(TH1* hist, TVirtualPad* c1 = 0, const char* opt = "", Bool_t copy = 1);
void MakeNice2dHisto(TH2* hist, TVirtualPad* c1 = 0, const char* opt = "", Bool_t copy = 1);
void MakeNiceHistoPad(TH1* hist, TVirtualPad* c1 = 0, Double_t scaleX = 1, Double_t scaleY = 1, const char* opt = "", Bool_t copy = 1);
void MakeNiceHistoPad(TH1* hist, TVirtualPad* c, Int_t i, Int_t j, Double_t scaleX = 1, Double_t scaleY = 1, const char* opt = "", Bool_t copy = 1);
void MakeNice1dHistoPad(TH1* hist, TVirtualPad* c1 = 0, Double_t scaleX = 1, Double_t scaleY = 1, const char* opt = "", Bool_t copy = 1);
void MakeNice2dHistoPad(TH2* hist, TVirtualPad* c1 = 0, Double_t scaleX = 1, Double_t scaleY = 1, const char* opt = "", Bool_t copy = 1);
TCanvas* FindCanvas(const char* canvasName, 
                    Int_t xwidth = 700, Int_t ywidth = 500);
#ifdef ROOT_TMinuit
void IntegralWithError(TF1* func, Double_t &integral, Double_t &error,
                       Double_t xlow, Double_t xhigh, 
                       Double_t stepsize = 0.000001);
void FunctionWithError(TF1* func, Double_t x, Double_t &value, 
                       Double_t &error);
#endif
Double_t IntegralDerivative(TF1* func, Double_t xlow, Double_t xhigh, 
                            Double_t stepsize, Int_t parameter, 
                            Double_t epsilon);
Double_t FunctionDerivative(TF1* func, Double_t x,
                            Int_t parameter, Double_t epsilon);
void SetHistMaximum(TH1* hist, Float_t factor);
TH1F* GetHistogramFromGraph(TGraphErrors* graph, const char* histName);
TGraph* GetGraphFromHistogram(TH1* hist);
TClonesArray* CanvasPartition(TVirtualPad *C,const Int_t Nx = 2,const Int_t Ny = 1,
                     Float_t lMargin = 0.15, Float_t rMargin = 0.03,
                     Float_t bMargin = 0.15, Float_t tMargin = 0.03);
void SetHistStyle(TH1* hist);


void ForceScale(TH1* h, Double_t scale);
TH1F* ForceRatio(TH1F* h1, TH1F* h2);

void NormaliseBins(TH1* h);

TGraphErrors* ScaleGraph(TGraph* g, Double_t scale);
TGraphErrors* DistGraph(TGraph* g1, TGraph* g2);
TGraphErrors* DivideGraph(TGraph* g1, TGraph* g2);
TGraphErrors* ExtrapolateGraph(TGraph* g1, TGraph* g2);
TGraphErrors* AddGraph(TGraph* g1, TGraph* g2, Double_t val = 1);

#endif