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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 "TH1.h"
25#include "TObjArray.h"
28class TBrowser;
29class TFileMergeInfo;
31class THStack : public TNamed {
33 THStack& operator=(const THStack&); // Not implemented
36 TList *fHists; //Pointer to array of TH1
37 TObjArray *fStack; //!Pointer to array of sums of TH1
38 TH1 *fHistogram; //Pointer to histogram used for drawing axis
39 Double_t fMaximum; //Maximum value for plotting along y
40 Double_t fMinimum; //Minimum value for plotting along y
42 void BuildStack();
46 THStack();
47 THStack(const char *name, const char *title);
48 THStack(TH1* hist, Option_t *axis="x",
49 const char *name=0, const char *title=0,
50 Int_t firstbin=1, Int_t lastbin=-1,
51 Int_t firstbin2=1, Int_t lastbin2=-1,
52 Option_t* proj_option="", Option_t* draw_option="");
53 THStack(const THStack &hstack);
54 virtual ~THStack();
55 virtual void Add(TH1 *h, Option_t *option="");
56 virtual void Browse(TBrowser *b);
57 virtual Int_t DistancetoPrimitive(Int_t px, Int_t py);
58 virtual void Draw(Option_t *chopt="");
59 TH1 *GetHistogram() const;
60 TList *GetHists() const { return fHists; }
61 TIter begin() const;
62 TIter end() const { return TIter::End(); }
63 Int_t GetNhists() const;
65 virtual Double_t GetMaximum(Option_t *option="");
66 virtual Double_t GetMinimum(Option_t *option="");
67 TAxis *GetXaxis() const;
68 TAxis *GetYaxis() const;
69 virtual void ls(Option_t *option="") const;
70 virtual Long64_t Merge(TCollection* li, TFileMergeInfo *info);
71 virtual void Modified();
72 virtual void Paint(Option_t *chopt="");
73 virtual void Print(Option_t *chopt="") const;
74 virtual void RecursiveRemove(TObject *obj);
75 virtual void SavePrimitive(std::ostream &out, Option_t *option = "");
76 virtual void SetHistogram(TH1 *h) {fHistogram = h;}
77 virtual void SetMaximum(Double_t maximum=-1111); // *MENU*
78 virtual void SetMinimum(Double_t minimum=-1111); // *MENU*
80 ClassDef(THStack,2) //A collection of histograms
#define b(i)
Definition: RSha256.hxx:100
#define h(i)
Definition: RSha256.hxx:106
int Int_t
Definition: RtypesCore.h:41
double Double_t
Definition: RtypesCore.h:55
long long Long64_t
Definition: RtypesCore.h:69
const char Option_t
Definition: RtypesCore.h:62
#define ClassDef(name, id)
Definition: Rtypes.h:326
char name[80]
Definition: TGX11.cxx:109
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:63
The TH1 histogram class.
Definition: TH1.h:56
The Histogram stack class.
Definition: THStack.h:31
virtual void Print(Option_t *chopt="") const
Print the list of histograms.
Definition: THStack.cxx:978
TIter begin() const
Get iterator over internal hists list.
Definition: THStack.cxx:1073
virtual ~THStack()
THStack destructor.
Definition: THStack.cxx:320
THStack default constructor.
Definition: THStack.cxx:113
virtual void ls(Option_t *option="") const
List histograms in the stack.
Definition: THStack.cxx:627
TObjArray * fStack
Definition: THStack.h:37
Double_t fMinimum
Definition: THStack.h:40
virtual void Draw(Option_t *chopt="")
Draw this multihist with its current attributes.
Definition: THStack.cxx:445
void BuildStack()
build sum of all histograms Build a separate list fStack containing the running sum of all histograms
Definition: THStack.cxx:384
TList * GetHists() const
Definition: THStack.h:60
TAxis * GetYaxis() const
Get x axis of the histogram used to draw the stack.
Definition: THStack.cxx:616
virtual Long64_t Merge(TCollection *li, TFileMergeInfo *info)
Merge the THStack in the TList into this stack.
Definition: THStack.cxx:640
virtual void Paint(Option_t *chopt="")
Paint the list of histograms.
Definition: THStack.cxx:697
TH1 * GetHistogram() const
Returns a pointer to the histogram used to draw the axis Takes into account the two following cases.
Definition: THStack.cxx:476
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:491
virtual void SetHistogram(TH1 *h)
Definition: THStack.h:76
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:359
virtual void SavePrimitive(std::ostream &out, Option_t *option="")
Save primitive as a C++ statement(s) on output stream out.
Definition: THStack.cxx:1002
TObjArray * GetStack()
Return pointer to Stack. Build it if not yet done.
Definition: THStack.cxx:588
Int_t GetNhists() const
Return the number of histograms in the stack.
Definition: THStack.cxx:579
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:535
TIter end() const
Definition: THStack.h:62
TList * fHists
Definition: THStack.h:36
virtual void SetMaximum(Double_t maximum=-1111)
Set maximum.
Definition: THStack.cxx:1055
TH1 * fHistogram
Pointer to array of sums of TH1.
Definition: THStack.h:38
virtual void RecursiveRemove(TObject *obj)
Recursively remove object from the list of histograms.
Definition: THStack.cxx:992
virtual Int_t DistancetoPrimitive(Int_t px, Int_t py)
Compute distance from point px,py to each graph.
Definition: THStack.cxx:407
virtual void Modified()
invalidate sum of histograms
Definition: THStack.cxx:663
virtual void SetMinimum(Double_t minimum=-1111)
Set minimum.
Definition: THStack.cxx:1064
virtual void Browse(TBrowser *b)
Definition: THStack.cxx:374
THStack & operator=(const THStack &)
TAxis * GetXaxis() const
Get x axis of the histogram used to draw the stack.
Definition: THStack.cxx:601
Double_t fMaximum
Definition: THStack.h:39
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