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ROOT » HIST » HISTPAINTER » TPaletteAxis

class TPaletteAxis: public TPave

The palette painting class

A TPaletteAxis object is used to display the color palette when drawing 2-d histograms.

The TPaletteAxis is automatically created drawn when drawing a 2-D histogram when the option "Z" is specified.

A TPaletteAxis object is added to the histogram list of functions and can be retrieved doing: 

   TPaletteAxis *palette = (TPaletteAxis*)h->GetListOfFunctions()->FindObject("palette");
then the pointer palette can be used to change the pallette attributes.

Because the palette is created at painting time only, one must issue a: 

   gPad->Update();
before retrieving the palette pointer in order to create the palette. The following macro gives an example. 

Picture
Source



output of MACRO_TPaletteAxis_1_c1


{
   TCanvas *c1 = new TCanvas("c1","c1",600,400);
   TH2F *h2 = new TH2F("h2","Example of a resized palette ",40,-4,4,40,-20,20);
   Float_t px, py;
   for (Int_t i = 0; i < 25000; i++) {
      gRandom->Rannor(px,py);
      h2->Fill(px,5*py);
   }
   gStyle->SetPalette(1);
   h2->Draw("COLZ");
   gPad->Update();
   TPaletteAxis *palette = (TPaletteAxis*)h2->GetListOfFunctions()->FindObject("palette");
   palette->SetY2NDC(0.7);
   return c1;
}
TPaletteAxis inherits from TBox and TPave. The methods
allowing to specify the palette position are inherited from these two classes.


The palette can be interactively moved and resized. The context menu
can be used to set the axis attributes.


It is possible to select a range on the axis to set the min/max in z

 








Function Members (Methods)


public:



TPaletteAxis()


TPaletteAxis(const TPaletteAxis& palette)


TPaletteAxis(Double_t x1, Double_t y1, Double_t x2, Double_t y2, TH1* h)


 virtual~TPaletteAxis()


voidTObject::AbstractMethod(const char* method) const


virtual voidTObject::AppendPad(Option_t* option = "")


virtual voidTObject::Browse(TBrowser* b)


static TClass*Class()


virtual const char*TObject::ClassName() const


virtual voidTObject::Clear(Option_t* = "")


virtual TObject*TObject::Clone(const char* newname = "") const


virtual Int_tTObject::Compare(const TObject* obj) const


virtual voidTPave::ConvertNDCtoPad()


virtual voidCopy(TObject& palette) const


virtual voidTObject::Delete(Option_t* option = "")MENU 


Int_tTAttLine::DistancetoLine(Int_t px, Int_t py, Double_t xp1, Double_t yp1, Double_t xp2, Double_t yp2)


virtual Int_tDistancetoPrimitive(Int_t px, Int_t py)


virtual voidTPave::Draw(Option_t* option = "")


virtual TBox*TBox::DrawBox(Double_t x1, Double_t y1, Double_t x2, Double_t y2)


virtual voidTObject::DrawClass() constMENU 


virtual TObject*TObject::DrawClone(Option_t* option = "") constMENU 


virtual voidTPave::DrawPave(Double_t x1, Double_t y1, Double_t x2, Double_t y2, Int_t bordersize = 4, Option_t* option = "br")


virtual voidTObject::Dump() constMENU 


virtual voidTObject::Error(const char* method, const char* msgfmt) const


virtual voidTObject::Execute(const char* method, const char* params, Int_t* error = 0)


virtual voidTObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0)


virtual voidExecuteEvent(Int_t event, Int_t px, Int_t py)


virtual voidTObject::Fatal(const char* method, const char* msgfmt) const


virtual TObject*TObject::FindObject(const char* name) const


virtual TObject*TObject::FindObject(const TObject* obj) const


TGaxis*GetAxis()


virtual Rectangle_tTBox::GetBBox()


virtual TPointTBox::GetBBoxCenter()


Int_tGetBinColor(Int_t i, Int_t j)


Int_tTPave::GetBorderSize() const


Double_tTPave::GetCornerRadius() const


virtual Option_t*TObject::GetDrawOption() const


static Long_tTObject::GetDtorOnly()


virtual Color_tTAttFill::GetFillColor() const


virtual Style_tTAttFill::GetFillStyle() const


virtual const char*TObject::GetIconName() const


virtual Color_tTAttLine::GetLineColor() const


virtual Style_tTAttLine::GetLineStyle() const


virtual Width_tTAttLine::GetLineWidth() const


virtual Option_t*GetName() const


virtual char*GetObjectInfo(Int_t px, Int_t py) const


static Bool_tTObject::GetObjectStat()


virtual Option_t*TPave::GetOption() const


Int_tTPave::GetShadowColor() const


virtual const char*TObject::GetTitle() const


virtual UInt_tTObject::GetUniqueID() const


Int_tGetValueColor(Double_t zc)


Double_tTBox::GetX1() const


Double_tTPave::GetX1NDC() const


Double_tTBox::GetX2() const


Double_tTPave::GetX2NDC() const


Double_tTBox::GetY1() const


Double_tTPave::GetY1NDC() const


Double_tTBox::GetY2() const


Double_tTPave::GetY2NDC() const


virtual Bool_tTObject::HandleTimer(TTimer* timer)


virtual ULong_tTPave::Hash() const


virtual voidTBox::HideToolTip(Int_t event)


virtual voidTObject::Info(const char* method, const char* msgfmt) const


virtual Bool_tTObject::InheritsFrom(const char* classname) const


virtual Bool_tTObject::InheritsFrom(const TClass* cl) const


virtual voidTObject::Inspect() constMENU 


voidTObject::InvertBit(UInt_t f)


virtual TClass*IsA() const


Bool_tTBox::IsBeingResized() const


virtual Bool_tTObject::IsEqual(const TObject* obj) const


virtual Bool_tTObject::IsFolder() const


virtual Int_tTBox::IsInside(Double_t x, Double_t y) const


Bool_tTObject::IsOnHeap() const


virtual Bool_tTPave::IsSortable() const


virtual Bool_tTAttFill::IsTransparent() const


Bool_tTObject::IsZombie() const


virtual voidTPave::ls(Option_t* option = "") const


voidTObject::MayNotUse(const char* method) const


virtual voidTAttLine::Modify()


virtual Bool_tTObject::Notify()


voidTObject::Obsolete(const char* method, const char* asOfVers, const char* removedFromVers) const


static voidTObject::operator delete(void* ptr)


static voidTObject::operator delete(void* ptr, void* vp)


static voidTObject::operator delete[](void* ptr)


static voidTObject::operator delete[](void* ptr, void* vp)


void*TObject::operator new(size_t sz)


void*TObject::operator new(size_t sz, void* vp)


void*TObject::operator new[](size_t sz)


void*TObject::operator new[](size_t sz, void* vp)


TPaletteAxis&operator=(const TPaletteAxis&)


virtual voidPaint(Option_t* option = "")


virtual voidTBox::PaintBox(Double_t x1, Double_t y1, Double_t x2, Double_t y2, Option_t* option = "")


virtual voidTPave::PaintPave(Double_t x1, Double_t y1, Double_t x2, Double_t y2, Int_t bordersize = 4, Option_t* option = "br")


virtual voidTPave::PaintPaveArc(Double_t x1, Double_t y1, Double_t x2, Double_t y2, Int_t bordersize = 4, Option_t* option = "br")


virtual voidTObject::Pop()


virtual voidTPave::Print(Option_t* option = "") const


virtual Int_tTObject::Read(const char* name)


virtual voidTObject::RecursiveRemove(TObject* obj)


virtual voidTAttFill::ResetAttFill(Option_t* option = "")


virtual voidTAttLine::ResetAttLine(Option_t* option = "")


voidTObject::ResetBit(UInt_t f)


virtual voidTObject::SaveAs(const char* filename = "", Option_t* option = "") constMENU 


virtual voidTAttFill::SaveFillAttributes(ostream& out, const char* name, Int_t coldef = 1, Int_t stydef = 1001)


virtual voidTAttLine::SaveLineAttributes(ostream& out, const char* name, Int_t coldef = 1, Int_t stydef = 1, Int_t widdef = 1)


virtual voidSavePrimitive(ostream& out, Option_t* option = "")


virtual voidTBox::SetBBoxCenter(const TPoint& p)


virtual voidTBox::SetBBoxCenterX(const Int_t x)


virtual voidTBox::SetBBoxCenterY(const Int_t y)


virtual voidTBox::SetBBoxX1(const Int_t x)


virtual voidTBox::SetBBoxX2(const Int_t x)


virtual voidTBox::SetBBoxY1(const Int_t y)


virtual voidTBox::SetBBoxY2(const Int_t y)


voidTObject::SetBit(UInt_t f)


voidTObject::SetBit(UInt_t f, Bool_t set)


virtual voidTPave::SetBorderSize(Int_t bordersize = 4)MENU 


virtual voidTPave::SetCornerRadius(Double_t rad = 0.2)MENU 


virtual voidTObject::SetDrawOption(Option_t* option = "")MENU 


static voidTObject::SetDtorOnly(void* obj)


virtual voidTAttFill::SetFillAttributes()MENU 


virtual voidTAttFill::SetFillColor(Color_t fcolor)


virtual voidTAttFill::SetFillColorAlpha(Color_t fcolor, Float_t falpha)


virtual voidTAttFill::SetFillStyle(Style_t fstyle)


virtual voidSetLabelColor(Int_t labelcolor)MENU 


virtual voidSetLabelFont(Int_t labelfont)MENU 


virtual voidSetLabelOffset(Float_t labeloffset)MENU 


virtual voidSetLabelSize(Float_t labelsize)MENU 


virtual voidTAttLine::SetLineAttributes()MENU 


virtual voidSetLineColor(Color_t linecolor)MENU 


virtual voidTAttLine::SetLineColorAlpha(Color_t lcolor, Float_t lalpha)


virtual voidTAttLine::SetLineStyle(Style_t lstyle)


virtual voidSetLineWidth(Width_t linewidth)MENU 


virtual voidSetName(const char* name = "")MENU 


static voidTObject::SetObjectStat(Bool_t stat)


virtual voidTPave::SetOption(Option_t* option = "br")


virtual voidTPave::SetShadowColor(Int_t color)MENU 


virtual voidSetTitleOffset(Float_t titleoffset = 1)MENU 


virtual voidSetTitleSize(Float_t titlesize)MENU 


virtual voidTBox::SetToolTipText(const char* text, Long_t delayms = 1000)


virtual voidTObject::SetUniqueID(UInt_t uid)


virtual voidTPave::SetX1(Double_t x1)


virtual voidTPave::SetX1NDC(Double_t x1)


virtual voidTPave::SetX2(Double_t x2)


virtual voidTPave::SetX2NDC(Double_t x2)


virtual voidTPave::SetY1(Double_t y1)


virtual voidTPave::SetY1NDC(Double_t y1)


virtual voidTPave::SetY2(Double_t y2)


virtual voidTPave::SetY2NDC(Double_t y2)


virtual voidShowMembers(TMemberInspector&)


virtual voidStreamer(TBuffer&)


voidStreamerNVirtual(TBuffer& ClassDef_StreamerNVirtual_b)


virtual voidTObject::SysError(const char* method, const char* msgfmt) const


Bool_tTObject::TestBit(UInt_t f) const


Int_tTObject::TestBits(UInt_t f) const


virtual voidUnZoom()MENU 


virtual voidTObject::UseCurrentStyle()


virtual voidTObject::Warning(const char* method, const char* msgfmt) const


virtual Int_tTObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0)


virtual Int_tTObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) const





protected:



virtual voidTObject::DoError(int level, const char* location, const char* fmt, va_list va) const


voidTObject::MakeZombie()










Data Members


public:



enum  { kHasView


};


enum TPave::[unnamed] { kNameIsAction


};


enum TBox::[unnamed] { kCannotMove


};


enum TObject::EStatusBits { kCanDelete


kMustCleanup


kObjInCanvas


kIsReferenced


kHasUUID


kCannotPick


kNoContextMenu


kInvalidObject


};


enum TObject::[unnamed] { kIsOnHeap


kNotDeleted


kZombie


kBitMask


kSingleKey


kOverwrite


kWriteDelete


};





protected:



TGaxisfAxispalette axis


Int_tTPave::fBorderSizewindow box bordersize in pixels


Double_tTPave::fCornerRadiusCorner radius in case of option arc


Color_tTAttFill::fFillColorfill area color


Style_tTAttFill::fFillStylefill area style


TH1*fHpointer to parent histogram


Int_tTPave::fInit(=0 if transformation to NDC not yet done)


Color_tTAttLine::fLineColorline color


Style_tTAttLine::fLineStyleline style


Width_tTAttLine::fLineWidthline width


TStringfNamePave name


TStringTPave::fNamePave name


TStringTPave::fOptionPave style


Bool_tTBox::fResizing!True if box is being resized


Int_tTPave::fShadowColorColor of the pave's shadow


Double_tTBox::fX1X of 1st point


Double_tTPave::fX1NDCX1 point in NDC coordinates


Double_tTBox::fX2X of 2nd point


Double_tTPave::fX2NDCX2 point in NDC coordinates


Double_tTBox::fY1Y of 1st point


Double_tTPave::fY1NDCY1 point in NDC coordinates


Double_tTBox::fY2Y of 2nd point


Double_tTPave::fY2NDCY2 point in NDC coordinates







Class Charts

























































Inheritance
Inherited Members
Includes
Libraries



Class Charts


Function documentation


 TPaletteAxis()


 Palette default constructor.





 TPaletteAxis(Double_t x1, Double_t y1, Double_t x2, Double_t y2, TH1* h)


 Palette normal constructor.





 ~TPaletteAxis()


 Palette destructor.





 TPaletteAxis(const TPaletteAxis& palette)


 Palette copy constructor.





TPaletteAxis& operator=(const TPaletteAxis& )


 Assignment operator.





void Copy(TObject& palette) const


 Copy a palette to a palette.





Int_t DistancetoPrimitive(Int_t px, Int_t py)


 Check if mouse on the axis region.





void ExecuteEvent(Int_t event, Int_t px, Int_t py)


 Check if mouse on the axis region.





Int_t GetBinColor(Int_t i, Int_t j)


 Returns the color index of the bin (i,j).

 This function should be used after an histogram has been plotted with the
 option COL or COLZ like in the following example:

   h2->Draw("COLZ");
   gPad->Update();
   TPaletteAxis *palette =
      (TPaletteAxis*)h2->GetListOfFunctions()->FindObject("palette");
   Int_t ci = palette->GetBinColor(20,15);

 Then it is possible to retrieve the RGB components in the following way:

   TColor *c = gROOT->GetColor(ci);
   float x,y,z;
   c->GetRGB(x,y,z);





char * GetObjectInfo(Int_t px, Int_t py) const


 Displays the z value corresponding to cursor position py.





Int_t GetValueColor(Double_t zc)


 Returns the color index of the given z value

 This function should be used after an histogram has been plotted with the
 option COL or COLZ like in the following example:

   h2->Draw("COLZ");
   gPad->Update();
   TPaletteAxis *palette =
      (TPaletteAxis*)h2->GetListOfFunctions()->FindObject("palette");
   Int_t ci = palette->GetValueColor(30.);

 Then it is possible to retrieve the RGB components in the following way:

   TColor *c = gROOT->GetColor(ci);
   float x,y,z;
   c->GetRGB(x,y,z);





void Paint(Option_t* option = "")


 Paint the palette.





void SavePrimitive(ostream& out, Option_t* option = "")


 Save primitive as a C++ statement(s) on output stream out.





void UnZoom()


 Unzoom the palette





TGaxis       * GetAxis()



{return &fAxis;}






Option_t     * GetName() const



{return fName.Data();}






void SetName(const char* name = "")



{fName = name;}






void SetLabelColor(Int_t labelcolor)



{fAxis.SetLabelColor(labelcolor);}






void SetLabelFont(Int_t labelfont)



{fAxis.SetLabelFont(labelfont);}






void SetLabelOffset(Float_t labeloffset)



{fAxis.SetLabelOffset(labeloffset);}






void SetLabelSize(Float_t labelsize)



{fAxis.SetLabelSize(labelsize);}






void SetTitleOffset(Float_t titleoffset = 1)



{fAxis.SetTitleOffset(titleoffset);}






void SetTitleSize(Float_t titlesize)



{fAxis.SetTitleSize(titlesize);}






void SetLineColor(Color_t linecolor)



{fAxis.SetLineColor(linecolor);}






void SetLineWidth(Width_t linewidth)



{fAxis.SetLineWidth(linewidth);}