A TScatter is able to draw four variables scatter plot on a single plot.

Python interface

The TScatter class in PyROOT can be used to create and visualize scatter plots dynamically. By integrating with NumPy, it allows efficient data management and customization.

Key Features:

Efficient Data Handling: Use NumPy arrays to manage and pass data points to the TScatter object.
Visual Customization: Adjust marker styles, colors, and titles to tailor the visualization.
Canvas Layout Control: Configure canvas margins to ensure that titles and axes are displayed without clipping.
Exporting Plots: Save scatter plots in various formats (e.g., .png, .pdf) for further use.

Example Usage:

Below is a Python example demonstrating the use of TScatter:

import ROOT
import numpy as np
 
# Create a TCanvas and configure margins
canvas = ROOT.TCanvas("c1", "Scatter Plot Example", 800, 600)
# Margins (left, right, bottom, top) to adjust the canvas layout and prevent clipping of titles or axis labels.
canvas.SetMargin(0.1, 0.13, 0.1, 0.1)
 
# Define the number of data points
n = 175
 
# Generate arrays for x, y coordinates and optional metadata
x = 100*np.random.rand(n)
y = 200*np.random.rand(n)
c = 300*np.random.rand(n)  # Optional: Color or other metadata
s = 400*np.random.rand(n)  # Optional: Size or other metadata
 
# Create a TScatter object with the data
scatter = ROOT.TScatter(n, x, y, c, s)
 
# Customize the plot's appearance
scatter.SetMarkerStyle(20) # Set marker style
scatter.SetMarkerColor(4)  # Set marker color
scatter.SetTitle("Scatter plot title;X title;Y title;Z title")  # Set plot and axis titles
scatter.GetZaxis().SetTitleSize(0.04)  # Modify the title size
scatter.GetZaxis().SetTitleOffset(1.0)  # Adjust the z-axis title offset
 
# Draw the scatter plot
scatter.Draw("AP")  # "A" for Axis, "P" for Points
 
# Save the scatter plot to a file
canvas.SaveAs("scatter_plot_example.png")

The two first variables are the x and y position of the markers, the third is mapped on the current color map and the fourth on the marker size.

The following example demonstrates how it works:

 
void scatter()
{
   auto canvas = new TCanvas();
   canvas->SetRightMargin(0.14);
   gStyle->SetPalette(kBird, 0, 0.6); // define a transparent palette
 
   const int n = 175;
   double x[n];
   double y[n];
   double c[n];
   double s[n];
 
   // Define four random data set
   auto r  = new TRandom();
   for (int i=0; i<n; i++) {
      x[i] = 100*r->Rndm(i);
      y[i] = 200*r->Rndm(i);
      c[i] = 300*r->Rndm(i);
      s[i] = 400*r->Rndm(i);
   }
 
   auto scatter = new TScatter(n, x, y, c, s);
   scatter->SetMarkerStyle(20);
   scatter->SetTitle("Scatter plot title;X title;Y title;Z title");
   scatter->GetXaxis()->SetRangeUser(20.,90.);
   scatter->GetYaxis()->SetRangeUser(55.,90.);
   scatter->GetZaxis()->SetRangeUser(10.,200.);
   scatter->Draw("A");
}

TScatter's plotting options

TScatter can be drawn with the following options:

Option	Description
"A"	Produce a new plot with Axis around the graph

Definition at line 32 of file TScatter.h.

Public Member Functions
	TScatter ()
	TScatter default constructor.

	TScatter (Int_t n)
	TScatter normal constructor.

	TScatter (Int_t n, const Double_t x, const Double_t y, const Double_t col=nullptr, const Double_t size=nullptr)
	TScatter normal constructor.

	~TScatter () override
	TScatter default destructor.

Int_t	DistancetoPrimitive (Int_t px, Int_t py) override
	Compute distance from point px,py to a scatter plot.

void	ExecuteEvent (Int_t event, Int_t px, Int_t py) override
	Execute action corresponding to one event.

Double_t *	GetColor () const
	Get the array of colors.

TGraph *	GetGraph () const
	Get the graph holding X and Y positions.

TH2F *	GetHistogram () const
	Get the graph histogram used for drawing axis.

Double_t	GetMargin () const
	Set the margin around the plot in %.

Double_t	GetMaxMarkerSize () const
	Get the largest marker size used to paint the markers.

Double_t	GetMinMarkerSize () const
	Get the smallest marker size used to paint the markers.

Double_t *	GetSize () const
	Get the array of marker sizes.

TAxis *	GetXaxis () const
	Get the scatter's x axis.

TAxis *	GetYaxis () const
	Get the scatter's y axis.

TAxis *	GetZaxis () const
	Get the scatter's z axis.

TClass *	IsA () const override

void	Paint (Option_t *chopt="") override
	Paint this scatter plot with its current attributes.

void	Print (Option_t *chopt="") const override
	Print graph and errors values.

void	SavePrimitive (std::ostream &out, Option_t *option="") override
	Save primitive as a C++ statement(s) on output stream out.

void	SetHistogram (TH2F *h)

void	SetMargin (Double_t)
	Set the margin around the plot in %.

void	SetMaxMarkerSize (Double_t max)
	Set the largest marker size used to paint the markers.

void	SetMinMarkerSize (Double_t min)
	Set the smallest marker size used to paint the markers.

void	Streamer (TBuffer &) override
	Stream an object of class TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TNamed
	TNamed ()

	TNamed (const char name, const char title)

	TNamed (const TNamed &named)
	TNamed copy ctor.

	TNamed (const TString &name, const TString &title)

virtual	~TNamed ()
	TNamed destructor.

void	Clear (Option_t *option="") override
	Set name and title to empty strings ("").

TObject *	Clone (const char *newname="") const override
	Make a clone of an object using the Streamer facility.

Int_t	Compare (const TObject *obj) const override
	Compare two TNamed objects.

void	Copy (TObject &named) const override
	Copy this to obj.

virtual void	FillBuffer (char *&buffer)
	Encode TNamed into output buffer.

const char *	GetName () const override
	Returns name of object.

const char *	GetTitle () const override
	Returns title of object.

ULong_t	Hash () const override
	Return hash value for this object.

Bool_t	IsSortable () const override

void	ls (Option_t *option="") const override
	List TNamed name and title.

TNamed &	operator= (const TNamed &rhs)
	TNamed assignment operator.

virtual void	SetName (const char *name)
	Set the name of the TNamed.

virtual void	SetNameTitle (const char name, const char title)
	Set all the TNamed parameters (name and title).

virtual void	SetTitle (const char *title="")
	Set the title of the TNamed.

virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TObject
	TObject ()
	TObject constructor.

	TObject (const TObject &object)
	TObject copy ctor.

virtual	~TObject ()
	TObject destructor.

void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract.

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad.

virtual void	Browse (TBrowser *b)
	Browse object. May be overridden for another default action.

ULong_t	CheckedHash ()
	Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.

virtual const char *	ClassName () const
	Returns name of class to which the object belongs.

virtual void	Delete (Option_t *option="")
	Delete this object.

virtual void	Draw (Option_t *option="")
	Default Draw method for all objects.

virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs.

virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad with: `gROOT->SetSelectedPad(c1)`.

virtual void	Dump () const
	Dump contents of object on stdout.

virtual void	Error (const char method, const char msgfmt,...) const
	Issue error message.

virtual void	Execute (const char method, const char params, Int_t *error=nullptr)
	Execute method on this object with the given parameter string, e.g.

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=nullptr)
	Execute method on this object with parameters stored in the TObjArray.

virtual void	Fatal (const char method, const char msgfmt,...) const
	Issue fatal error message.

virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes.

virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes.

virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object.

virtual const char *	GetIconName () const
	Returns mime type name of object.

virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py).

virtual Option_t *	GetOption () const

virtual UInt_t	GetUniqueID () const
	Return the unique object id.

virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out.

Bool_t	HasInconsistentHash () const
	Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.

virtual void	Info (const char method, const char msgfmt,...) const
	Issue info message.

virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname".

virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl.

virtual void	Inspect () const
	Dump contents of this object in a graphics canvas.

void	InvertBit (UInt_t f)

Bool_t	IsDestructed () const
	IsDestructed.

virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory).

virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).

R__ALWAYS_INLINE Bool_t	IsOnHeap () const

R__ALWAYS_INLINE Bool_t	IsZombie () const

void	MayNotUse (const char *method) const
	Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary).

virtual Bool_t	Notify ()
	This method must be overridden to handle object notification (the base implementation is no-op).

void	Obsolete (const char method, const char asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete.

void	operator delete (void *ptr)
	Operator delete.

void	operator delete (void ptr, void vp)
	Only called by placement new when throwing an exception.

void	operator delete[] (void *ptr)
	Operator delete [].

void	operator delete[] (void ptr, void vp)
	Only called by placement new[] when throwing an exception.

void *	operator new (size_t sz)

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

void *	operator new[] (size_t sz)

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

TObject &	operator= (const TObject &rhs)
	TObject assignment operator.

virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list.

virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory.

virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list.

void	ResetBit (UInt_t f)

virtual void	SaveAs (const char filename="", Option_t option="") const
	Save this object in the file specified by filename.

void	SetBit (UInt_t f)

void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f.

virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object.

virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

virtual void	SysError (const char method, const char msgfmt,...) const
	Issue system error message.

R__ALWAYS_INLINE Bool_t	TestBit (UInt_t f) const

Int_t	TestBits (UInt_t f) const

virtual void	UseCurrentStyle ()
	Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked.

virtual void	Warning (const char method, const char msgfmt,...) const
	Issue warning message.

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory.

Public Member Functions inherited from TAttLine
	TAttLine ()
	AttLine default constructor.

	TAttLine (Color_t lcolor, Style_t lstyle, Width_t lwidth)
	AttLine normal constructor.

virtual	~TAttLine ()
	AttLine destructor.

void	Copy (TAttLine &attline) const
	Copy this line attributes to a new TAttLine.

Int_t	DistancetoLine (Int_t px, Int_t py, Double_t xp1, Double_t yp1, Double_t xp2, Double_t yp2)
	Compute distance from point px,py to a line.

virtual Color_t	GetLineColor () const
	Return the line color.

virtual Style_t	GetLineStyle () const
	Return the line style.

virtual Width_t	GetLineWidth () const
	Return the line width.

virtual void	Modify ()
	Change current line attributes if necessary.

virtual void	ResetAttLine (Option_t *option="")
	Reset this line attributes to default values.

virtual void	SaveLineAttributes (std::ostream &out, const char *name, Int_t coldef=1, Int_t stydef=1, Int_t widdef=1)
	Save line attributes as C++ statement(s) on output stream out.

virtual void	SetLineAttributes ()
	Invoke the DialogCanvas Line attributes.

virtual void	SetLineColor (Color_t lcolor)
	Set the line color.

virtual void	SetLineColorAlpha (Color_t lcolor, Float_t lalpha)
	Set a transparent line color.

virtual void	SetLineStyle (Style_t lstyle)
	Set the line style.

virtual void	SetLineWidth (Width_t lwidth)
	Set the line width.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TAttFill
	TAttFill ()
	AttFill default constructor.

	TAttFill (Color_t fcolor, Style_t fstyle)
	AttFill normal constructor.

virtual	~TAttFill ()
	AttFill destructor.

void	Copy (TAttFill &attfill) const
	Copy this fill attributes to a new TAttFill.

virtual Color_t	GetFillColor () const
	Return the fill area color.

virtual Style_t	GetFillStyle () const
	Return the fill area style.

virtual Bool_t	IsTransparent () const

virtual void	Modify ()
	Change current fill area attributes if necessary.

virtual void	ResetAttFill (Option_t *option="")
	Reset this fill attributes to default values.

virtual void	SaveFillAttributes (std::ostream &out, const char *name, Int_t coldef=1, Int_t stydef=1001)
	Save fill attributes as C++ statement(s) on output stream out.

virtual void	SetFillAttributes ()
	Invoke the DialogCanvas Fill attributes.

virtual void	SetFillColor (Color_t fcolor)
	Set the fill area color.

virtual void	SetFillColorAlpha (Color_t fcolor, Float_t falpha)
	Set a transparent fill color.

virtual void	SetFillStyle (Style_t fstyle)
	Set the fill area style.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TAttMarker
	TAttMarker ()
	TAttMarker default constructor.

	TAttMarker (Color_t color, Style_t style, Size_t msize)
	TAttMarker normal constructor.

virtual	~TAttMarker ()
	TAttMarker destructor.

void	Copy (TAttMarker &attmarker) const
	Copy this marker attributes to a new TAttMarker.

virtual Color_t	GetMarkerColor () const
	Return the marker color.

virtual Size_t	GetMarkerSize () const
	Return the marker size.

virtual Style_t	GetMarkerStyle () const
	Return the marker style.

virtual void	Modify ()
	Change current marker attributes if necessary.

virtual void	ResetAttMarker (Option_t *toption="")
	Reset this marker attributes to the default values.

virtual void	SaveMarkerAttributes (std::ostream &out, const char *name, Int_t coldef=1, Int_t stydef=1, Int_t sizdef=1)
	Save line attributes as C++ statement(s) on output stream out.

virtual void	SetMarkerAttributes ()
	Invoke the DialogCanvas Marker attributes.

virtual void	SetMarkerColor (Color_t mcolor=1)
	Set the marker color.

virtual void	SetMarkerColorAlpha (Color_t mcolor, Float_t malpha)
	Set a transparent marker color.

virtual void	SetMarkerSize (Size_t msize=1)
	Set the marker size.

virtual void	SetMarkerStyle (Style_t mstyle=1)
	Set the marker style.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Static Public Member Functions
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TNamed
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TObject
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static Longptr_t	GetDtorOnly ()
	Return destructor only flag.

static Bool_t	GetObjectStat ()
	Get status of object stat flag.

static void	SetDtorOnly (void *obj)
	Set destructor only flag.

static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable.

Static Public Member Functions inherited from TAttLine
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TAttFill
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TAttMarker
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static Width_t	GetMarkerLineWidth (Style_t style)
	Internal helper function that returns the line width of the given marker style (0 = filled marker)

static Style_t	GetMarkerStyleBase (Style_t style)
	Internal helper function that returns the corresponding marker style with line width 1 for the given style.

Protected Attributes
Double_t *	fColor {nullptr}
	[fNpoints] array of colors

TGraph *	fGraph {nullptr}
	Pointer to graph holding X and Y positions.

TH2F *	fHistogram {nullptr}
	Pointer to histogram used for drawing axis.

Double_t	fMargin {.1}
	Margin around the plot in %.

Double_t	fMaxMarkerSize {5.}
	Largest marker size used to paint the markers.

Int_t	fMaxSize {-1}
	!Current dimension of arrays fX and fY

Double_t	fMinMarkerSize {1.}
	Smallest marker size used to paint the markers.

Int_t	fNpoints {-1}
	Number of points <= fMaxSize.

Double_t *	fSize {nullptr}
	[fNpoints] array of marker sizes

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Protected Attributes inherited from TAttLine
Color_t	fLineColor
	Line color.

Style_t	fLineStyle
	Line style.

Width_t	fLineWidth
	Line width.

Protected Attributes inherited from TAttFill
Color_t	fFillColor
	Fill area color.

Style_t	fFillStyle
	Fill area style.

Protected Attributes inherited from TAttMarker
Color_t	fMarkerColor
	Marker color.

Size_t	fMarkerSize
	Marker size.

Style_t	fMarkerStyle
	Marker style.

Additional Inherited Members
Public Types inherited from TObject
enum	{ kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff }

enum	{ kSingleKey = (1ULL << ( 0 )) , kOverwrite = (1ULL << ( 1 )) , kWriteDelete = (1ULL << ( 2 )) }

enum	EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) }

enum	EStatusBits { kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) , kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 13 )) }

Protected Types inherited from TObject
enum	{ kOnlyPrepStep = (1ULL << ( 3 )) }

Protected Member Functions inherited from TObject
virtual void	DoError (int level, const char location, const char fmt, va_list va) const
	Interface to ErrorHandler (protected).

void	MakeZombie ()

#include <TScatter.h>

Inheritance diagram for TScatter:

[legend]

Constructor & Destructor Documentation

◆ TScatter() [1/3]

TScatter::TScatter ( )

TScatter default constructor.

Definition at line 58 of file TScatter.cxx.

◆ TScatter() [2/3]

TScatter::TScatter ( Int_t n )

TScatter normal constructor.

the arrays are preset to zero

Definition at line 67 of file TScatter.cxx.

◆ TScatter() [3/3]

TScatter::TScatter	(	Int_t	n,
		const Double_t *	x,
		const Double_t *	y,
		const Double_t *	col = `nullptr`,
		const Double_t *	size = `nullptr`
	)

TScatter normal constructor.

if ex or ey are null, the corresponding arrays are preset to zero

Definition at line 89 of file TScatter.cxx.

◆ ~TScatter()

TScatter::~TScatter ( )

override

TScatter default destructor.

Definition at line 114 of file TScatter.cxx.

Member Function Documentation

◆ Class()

static TClass * TScatter::Class ( )

static

Returns: TClass describing this class

◆ Class_Name()

static const char * TScatter::Class_Name ( )

static

Returns: Name of this class

◆ Class_Version()

static constexpr Version_t TScatter::Class_Version ( )

inlinestaticconstexpr

Returns: Version of this class

Definition at line 73 of file TScatter.h.

◆ DeclFileName()

static const char * TScatter::DeclFileName ( )

inlinestatic

Returns: Name of the file containing the class declaration

Definition at line 73 of file TScatter.h.

◆ DistancetoPrimitive()

Int_t TScatter::DistancetoPrimitive	(	Int_t	px,
		Int_t	py
	)

overridevirtual

Compute distance from point px,py to a scatter plot.

Compute the closest distance of approach from point px,py to this scatter plot. The distance is computed in pixels units.

Reimplemented from TObject.

Definition at line 129 of file TScatter.cxx.

◆ ExecuteEvent()

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

overridevirtual

Execute action corresponding to one event.

This member function is called when a graph is clicked with the locator

If Left button clicked on one of the line end points, this point follows the cursor until button is released.

if Middle button clicked, the line is moved parallel to itself until the button is released.

Reimplemented from TObject.

Definition at line 156 of file TScatter.cxx.

◆ GetColor()

Double_t * TScatter::GetColor ( ) const

inline

Get the array of colors.

Definition at line 53 of file TScatter.h.

◆ GetGraph()

TGraph * TScatter::GetGraph ( ) const

inline

Get the graph holding X and Y positions.

Definition at line 58 of file TScatter.h.

◆ GetHistogram()

TH2F * TScatter::GetHistogram ( ) const

Get the graph histogram used for drawing axis.

Returns a pointer to the histogram used to draw the axis.

Definition at line 166 of file TScatter.cxx.

◆ GetMargin()

Double_t TScatter::GetMargin ( ) const

inline

Set the margin around the plot in %.

Definition at line 55 of file TScatter.h.

◆ GetMaxMarkerSize()

Double_t TScatter::GetMaxMarkerSize ( ) const

inline

Get the largest marker size used to paint the markers.

Definition at line 56 of file TScatter.h.

◆ GetMinMarkerSize()

Double_t TScatter::GetMinMarkerSize ( ) const

inline

Get the smallest marker size used to paint the markers.

Definition at line 57 of file TScatter.h.

◆ GetSize()

Double_t * TScatter::GetSize ( ) const

inline

Get the array of marker sizes.

Definition at line 54 of file TScatter.h.

◆ GetXaxis()

TAxis * TScatter::GetXaxis ( ) const

Get the scatter's x axis.

Definition at line 191 of file TScatter.cxx.

◆ GetYaxis()

TAxis * TScatter::GetYaxis ( ) const

Get the scatter's y axis.

Definition at line 201 of file TScatter.cxx.

◆ GetZaxis()

TAxis * TScatter::GetZaxis ( ) const

Get the scatter's z axis.

Definition at line 211 of file TScatter.cxx.

◆ IsA()

TClass * TScatter::IsA ( ) const

inlineoverridevirtual

Returns: TClass describing current object

Reimplemented from TNamed.

Definition at line 73 of file TScatter.h.

◆ Paint()

void TScatter::Paint ( Option_t * chopt = "" )

overridevirtual

Paint this scatter plot with its current attributes.

Reimplemented from TObject.

Definition at line 221 of file TScatter.cxx.

◆ Print()

void TScatter::Print ( Option_t * chopt = "" ) const

overridevirtual

Print graph and errors values.

Reimplemented from TNamed.

Definition at line 231 of file TScatter.cxx.

◆ SavePrimitive()

void TScatter::SavePrimitive	(	std::ostream &	out,
		Option_t *	option = `""`
	)

overridevirtual

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

Reimplemented from TObject.

Definition at line 260 of file TScatter.cxx.

◆ SetHistogram()

void TScatter::SetHistogram ( TH2F * h )

inline

Definition at line 67 of file TScatter.h.

◆ SetMargin()

void TScatter::SetMargin ( Double_t margin )

Set the margin around the plot in %.

Definition at line 247 of file TScatter.cxx.

◆ SetMaxMarkerSize()

void TScatter::SetMaxMarkerSize ( Double_t max )

inline

Set the largest marker size used to paint the markers.

Definition at line 64 of file TScatter.h.

◆ SetMinMarkerSize()

void TScatter::SetMinMarkerSize ( Double_t min )

inline

Set the smallest marker size used to paint the markers.

Definition at line 65 of file TScatter.h.

◆ Streamer()

void TScatter::Streamer ( TBuffer & R__b )

overridevirtual

Stream an object of class TObject.

Reimplemented from TNamed.

◆ StreamerNVirtual()

void TScatter::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 73 of file TScatter.h.

Member Data Documentation

◆ fColor

Double_t* TScatter::fColor {nullptr}

protected

[fNpoints] array of colors

Definition at line 39 of file TScatter.h.

◆ fGraph

TGraph* TScatter::fGraph {nullptr}

protected

Pointer to graph holding X and Y positions.

Definition at line 38 of file TScatter.h.

◆ fHistogram

TH2F* TScatter::fHistogram {nullptr}

protected

Pointer to histogram used for drawing axis.

Definition at line 37 of file TScatter.h.

◆ fMargin

Double_t TScatter::fMargin {.1}

protected

Margin around the plot in %.

Definition at line 43 of file TScatter.h.

◆ fMaxMarkerSize

Double_t TScatter::fMaxMarkerSize {5.}

protected

Largest marker size used to paint the markers.

Definition at line 41 of file TScatter.h.

◆ fMaxSize

Int_t TScatter::fMaxSize {-1}

protected

!Current dimension of arrays fX and fY

Definition at line 35 of file TScatter.h.

◆ fMinMarkerSize

Double_t TScatter::fMinMarkerSize {1.}

protected

Smallest marker size used to paint the markers.

Definition at line 42 of file TScatter.h.

◆ fNpoints

Int_t TScatter::fNpoints {-1}

protected

Number of points <= fMaxSize.

Definition at line 36 of file TScatter.h.

◆ fSize

Double_t* TScatter::fSize {nullptr}

protected

[fNpoints] array of marker sizes

Definition at line 40 of file TScatter.h.

Libraries for TScatter:

[legend]

The documentation for this class was generated from the following files:

hist/hist/inc/TScatter.h
hist/hist/src/TScatter.cxx

Key Features:

Example Usage:

TScatter's plotting options

Public Member Functions

Static Public Member Functions

Protected Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ TScatter() [1/3]

◆ TScatter() [2/3]

◆ TScatter() [3/3]

◆ ~TScatter()

Member Function Documentation

◆ Class()

◆ Class_Name()

◆ Class_Version()

◆ DeclFileName()

◆ DistancetoPrimitive()

◆ ExecuteEvent()

◆ GetColor()

◆ GetGraph()

◆ GetHistogram()

◆ GetMargin()

◆ GetMaxMarkerSize()

◆ GetMinMarkerSize()

◆ GetSize()

◆ GetXaxis()

◆ GetYaxis()

◆ GetZaxis()

◆ IsA()

◆ Paint()

◆ Print()

◆ SavePrimitive()

◆ SetHistogram()

◆ SetMargin()

◆ SetMaxMarkerSize()

◆ SetMinMarkerSize()

◆ Streamer()

◆ StreamerNVirtual()

Member Data Documentation

◆ fColor

◆ fGraph

◆ fHistogram

◆ fMargin

◆ fMaxMarkerSize

◆ fMaxSize

◆ fMinMarkerSize

◆ fNpoints

◆ fSize