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1// @(#)root/hist:$Id$
2// Author: Rene Brun 10/12/2001
5 * Copyright (C) 1995-2001, Rene Brun and Fons Rademakers. *
6 * All rights reserved. *
7 * *
8 * For the licensing terms see $ROOTSYS/LICENSE. *
9 * For the list of contributors see $ROOTSYS/README/CREDITS. *
10 *************************************************************************/
12#ifndef ROOT_THStack
13#define ROOT_THStack
17// //
18// THStack //
19// //
20// A collection of histograms //
21// //
24#include "TNamed.h"
25#include "TObjArray.h"
28class TH1;
29class TList;
30class TAxis;
32#include "TH1.h"
35class TBrowser;
36class TFileMergeInfo;
38class THStack : public TNamed {
40 THStack& operator=(const THStack&) = delete;
43 TList *fHists{nullptr}; ///< Pointer to array of TH1
44 TObjArray *fStack{nullptr}; ///<! Pointer to array of sums of TH1
45 TH1 *fHistogram{nullptr}; ///< Pointer to histogram used for drawing axis
46 Double_t fMaximum{-1111}; ///< Maximum value for plotting along y
47 Double_t fMinimum{-1111}; ///< Minimum value for plotting along y
49 void BuildStack();
54 THStack(const char *name, const char *title);
55 THStack(TH1* hist, Option_t *axis="x",
56 const char *name = nullptr, const char *title = nullptr,
57 Int_t firstbin = 1, Int_t lastbin = -1,
58 Int_t firstbin2 = 1, Int_t lastbin2 = -1,
59 Option_t *proj_option = "", Option_t *draw_option = "");
60 THStack(const THStack &hstack);
61 ~THStack() override;
62 virtual void Add(TH1 *h, Option_t *option="");
63 void Browse(TBrowser *b) override;
64 Int_t DistancetoPrimitive(Int_t px, Int_t py) override;
65 void Draw(Option_t *chopt="") override;
66 TH1 *GetHistogram() const;
67 TList *GetHists() const { return fHists; }
68 TIter begin() const;
69 TIter end() const { return TIter::End(); }
70 Int_t GetNhists() const;
74 TAxis *GetXaxis() const;
75 TAxis *GetYaxis() const;
76 TAxis *GetZaxis() const;
77 void ls(Option_t *option="") const override;
78 virtual Long64_t Merge(TCollection* li, TFileMergeInfo *info);
79 virtual void Modified();
80 void Paint(Option_t *chopt = "") override;
81 void Print(Option_t *chopt = "") const override;
82 void RecursiveRemove(TObject *obj) override;
83 void SavePrimitive(std::ostream &out, Option_t *option = "") override;
84 virtual void SetHistogram(TH1 *h) { fHistogram = h; }
85 virtual void SetMaximum(Double_t maximum=-1111); // *MENU*
86 virtual void SetMinimum(Double_t minimum=-1111); // *MENU*
88 ClassDefOverride(THStack,2) //A collection of histograms
#define h(i)
Definition: RSha256.hxx:106
int Int_t
Definition: RtypesCore.h:45
double Double_t
Definition: RtypesCore.h:59
long long Long64_t
Definition: RtypesCore.h:80
const char Option_t
Definition: RtypesCore.h:66
#define ClassDefOverride(name, id)
Definition: Rtypes.h:339
Option_t Option_t option
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void char Point_t Rectangle_t WindowAttributes_t Float_t Float_t Float_t b
char name[80]
Definition: TGX11.cxx:110
Class to manage histogram axis.
Definition: TAxis.h:30
Using a TBrowser one can browse all ROOT objects.
Definition: TBrowser.h:37
Collection abstract base class.
Definition: TCollection.h:65
TH1 is the base class of all histogram classes in ROOT.
Definition: TH1.h:58
The Histogram stack class.
Definition: THStack.h:38
TIter begin() const
Get iterator over internal hists list.
Definition: THStack.cxx:1083
~THStack() override
THStack destructor.
Definition: THStack.cxx:324
Definition: THStack.h:53
void ls(Option_t *option="") const override
List histograms in the stack.
Definition: THStack.cxx:652
TObjArray * fStack
! Pointer to array of sums of TH1
Definition: THStack.h:44
Double_t fMinimum
Minimum value for plotting along y.
Definition: THStack.h:47
void BuildStack()
build sum of all histograms Build a separate list fStack containing the running sum of all histograms
Definition: THStack.cxx:390
TList * GetHists() const
Definition: THStack.h:67
TAxis * GetYaxis() const
Get y axis of the histogram used to draw the stack.
Definition: THStack.cxx:625
virtual Long64_t Merge(TCollection *li, TFileMergeInfo *info)
Merge the THStack in the TList into this stack.
Definition: THStack.cxx:665
TH1 * GetHistogram() const
Returns a pointer to the histogram used to draw the axis Takes into account the two following cases.
Definition: THStack.cxx:481
virtual Double_t GetMaximum(Option_t *option="")
returns the maximum of all added histograms returns the maximum of all histograms if option "nostack"...
Definition: THStack.cxx:495
virtual void SetHistogram(TH1 *h)
Definition: THStack.h:84
void RecursiveRemove(TObject *obj) override
Recursively remove object from the list of histograms.
Definition: THStack.cxx:1003
virtual void Add(TH1 *h, Option_t *option="")
add a new histogram to the list Only 1-d and 2-d histograms currently supported.
Definition: THStack.cxx:365
void Print(Option_t *chopt="") const override
Print the list of histograms.
Definition: THStack.cxx:989
TObjArray * GetStack()
Return pointer to Stack. Build it if not yet done.
Definition: THStack.cxx:597
THStack & operator=(const THStack &)=delete
Int_t GetNhists() const
Return the number of histograms in the stack.
Definition: THStack.cxx:588
virtual Double_t GetMinimum(Option_t *option="")
returns the minimum of all added histograms returns the minimum of all histograms if option "nostack"...
Definition: THStack.cxx:544
void Draw(Option_t *chopt="") override
Draw this multihist with its current attributes.
Definition: THStack.cxx:450
void Paint(Option_t *chopt="") override
Paint the list of histograms.
Definition: THStack.cxx:701
TIter end() const
Definition: THStack.h:69
TList * fHists
Pointer to array of TH1.
Definition: THStack.h:43
virtual void SetMaximum(Double_t maximum=-1111)
Set maximum.
Definition: THStack.cxx:1065
TH1 * fHistogram
Pointer to histogram used for drawing axis.
Definition: THStack.h:45
TAxis * GetZaxis() const
Get z axis of the histogram used to draw the stack.
Definition: THStack.cxx:640
void SavePrimitive(std::ostream &out, Option_t *option="") override
Save primitive as a C++ statement(s) on output stream out.
Definition: THStack.cxx:1013
void Browse(TBrowser *b) override
Definition: THStack.cxx:380
Int_t DistancetoPrimitive(Int_t px, Int_t py) override
Compute distance from point px,py to each graph.
Definition: THStack.cxx:413
virtual void Modified()
invalidate sum of histograms
Definition: THStack.cxx:688
virtual void SetMinimum(Double_t minimum=-1111)
Set minimum.
Definition: THStack.cxx:1074
TAxis * GetXaxis() const
Get x axis of the histogram used to draw the stack.
Definition: THStack.cxx:610
Double_t fMaximum
Maximum value for plotting along y.
Definition: THStack.h:46
static TIter End()
Pointing to the element after the last - to a nullptr value in our case.
A doubly linked list.
Definition: TList.h:44
The TNamed class is the base class for all named ROOT classes.
Definition: TNamed.h:29
An array of TObjects.
Definition: TObjArray.h:37
Mother of all ROOT objects.
Definition: TObject.h:37