TGraphPainter Class Reference

The graph painter class.

Implements all graphs' drawing's options.

• Introduction
• Graphs' plotting options
• Exclusion graphs
• Graphs with error bars
  • TGraphErrors
  • TGraphAsymmErrors
  • TGraphBentErrors
  • TGraphMultiErrors
• TGraphPolar options
• Colors automatically picked in palette
• Reverse graphs' axis
• Graphs in logarithmic scale
• Highlight mode for graph

Introduction

Graphs are drawn via the painter TGraphPainter class. This class implements techniques needed to display the various kind of graphs i.e.: TGraph, TGraphErrors, TGraphBentErrors and TGraphAsymmErrors.

To draw a graph graph it's enough to do:

graph->Draw("AL");

The option AL in the Draw() method means:

1. The axis should be drawn (option A),

2. The graph should be drawn as a simple line (option L).

   By default a graph is drawn in the current pad in the current coordinate system. To define a suitable coordinate system and draw the axis the option A must be specified.

TGraphPainter offers many options to paint the various kind of graphs.

It is separated from the graph classes so that one can have graphs without the graphics overhead, for example in a batch program.

When a displayed graph is modified, there is no need to call Draw() again; the image will be refreshed the next time the pad will be updated. A pad is updated after one of these three actions:

1. a carriage return on the ROOT command line,
2. a click inside the pad,
3. a call to TPad::Update.

Graphs' plotting options

Graphs can be drawn with the following options:

Option	Description
"A"	Produce a new plot with Axis around the graph
"I"	Combine with option 'A' it draws invisible axis
"L"	A simple polyline is drawn
"F"	A fill area is drawn ('CF' draw a smoothed fill area)
"C"	A smooth Curve is drawn
"*"	A Star is plotted at each point
"P"	The current marker is plotted at each point
"B"	A Bar chart is drawn
"1"	When a graph is drawn as a bar chart, this option makes the bars start from the bottom of the pad. By default they start at 0.
"X+"	The X-axis is drawn on the top side of the plot.
"Y+"	The Y-axis is drawn on the right side of the plot.
"PFC"	Palette Fill Color: graph's fill color is taken in the current palette.
"PLC"	Palette Line Color: graph's line color is taken in the current palette.
"PMC"	Palette Marker Color: graph's marker color is taken in the current palette.
"RX"	Reverse the X axis.
"RY"	Reverse the Y axis.

Drawing options can be combined. In the following example the graph is drawn as a smooth curve (option "C") with markers (option "P") and with axes (option "A").

{
   auto c1 = new TCanvas("c1","c1",200,10,600,400);
 
   c1->SetFillColor(42);
   c1->SetGrid();
 
   const Int_t n = 20;
   Double_t x[n], y[n];
   for (Int_t i=0;i<n;i++) {
      x[i] = i*0.1;
      y[i] = 10*sin(x[i]+0.2);
   }
   auto gr = new TGraph(n,x,y);
   gr->SetLineColor(2);
   gr->SetLineWidth(4);
   gr->SetMarkerColor(4);
   gr->SetMarkerSize(1.5);
   gr->SetMarkerStyle(21);
   gr->SetTitle("Option ACP example");
   gr->GetXaxis()->SetTitle("X title");
   gr->GetYaxis()->SetTitle("Y title");
   gr->Draw("ACP");
 
   // TCanvas::Update() draws the frame, after which one can change it
   c1->Update();
   c1->GetFrame()->SetFillColor(21);
   c1->GetFrame()->SetBorderSize(12);
   c1->Modified();
}

The following macro shows the option "B" usage. It can be combined with the option "1".

The bar width is equal to:

bar_width  = 0.5*delta*gStyle->GetBarWidth();

Where delta is equal to the X maximal value minus the X minimal value divided by the number of points in the graph.

{
   auto c47 = new TCanvas("c47","c47",200,10,600,400);
   c47->Divide(1,2);
   const Int_t n = 20;
   Double_t x[n], y[n];
   for (Int_t i=0;i<n;i++) {
      x[i] = i*0.1;
      y[i] = 10*sin(x[i]+0.2)-6;
   }
   auto gr = new TGraph(n,x,y);
   gr->SetFillColor(38);
   gr->SetTitle(" ");
   c47->cd(1); gr->Draw("AB");
   c47->cd(2); gr->Draw("AB1");
}

Exclusion graphs

When a graph is painted with the option C or L it is possible to draw a filled area on one side of the line. This is useful to show exclusion zones.

This drawing mode is activated when the absolute value of the graph line width (set by SetLineWidth()) is greater than 99. In that case the line width number is interpreted as:

100*ff+ll = ffll

• The two digits number ll represent the normal line width
• The two digits number ff represent the filled area width.
• The sign of "ffll" allows to flip the filled area from one side of the line to the other.

The current fill area attributes are used to draw the hatched zone.

 
TCanvas *gr106_exclusiongraph() {
   TCanvas *c1 = new TCanvas("c1","Exclusion graph examples",200,10,600,400);
   c1->SetGrid();
 
   TMultiGraph *mg = new TMultiGraph();
   mg->SetTitle("Exclusion graphs");
 
   const Int_t n = 35;
   Double_t xvalues1[n], xvalues2[n], xvalues3[n], yvalues1[n], yvalues2[n], yvalues3[n];
   for (Int_t i=0;i<n;i++) {
     xvalues1[i]  = i*0.1;
     xvalues2[i]  = xvalues1[i];
     xvalues3[i]  = xvalues1[i]+.5;
     yvalues1[i] = 10*sin(xvalues1[i]);
     yvalues2[i] = 10*cos(xvalues1[i]);
     yvalues3[i] = 10*sin(xvalues1[i])-2;
   }
 
   // See explanation for SetLineWidth above
   TGraph *gr1 = new TGraph(n,xvalues1,yvalues1);
   gr1->SetLineColor(2);
   gr1->SetLineWidth(1504);
   gr1->SetFillStyle(3005);
 
   TGraph *gr2 = new TGraph(n,xvalues2,yvalues2);
   gr2->SetLineColor(4);
   gr2->SetLineWidth(-2002);
   gr2->SetFillStyle(3004);
   gr2->SetFillColor(9);
 
   TGraph *gr3 = new TGraph(n,xvalues3,yvalues3);
   gr3->SetLineColor(5);
   gr3->SetLineWidth(-802);
   gr3->SetFillStyle(3002);
   gr3->SetFillColor(2);
 
   mg->Add(gr1);
   mg->Add(gr2);
   mg->Add(gr3);
   mg->Draw("AC");
  
   return c1;
}

Graphs with error bars

Three classes are available to handle graphs with error bars: TGraphErrors, TGraphAsymmErrors and TGraphBentErrors. The following drawing options are specific to graphs with error bars:

Option	Description
"Z"	Do not draw small horizontal and vertical lines the end of the error bars. Without "Z", the default is to draw these.
">"	An arrow is drawn at the end of the error bars. The size of the arrow is set to 2/3 of the marker size.
"|>"	A filled arrow is drawn at the end of the error bars. The size of the arrow is set to 2/3 of the marker size.
"X"	Do not draw error bars. By default, graph classes that have errors are drawn with the errors (TGraph itself has no errors, and so this option has no effect.)
"||"	Draw only the small vertical/horizontal lines at the ends of the error bars, without drawing the bars themselves. This option is interesting to superimpose statistical-only errors on top of a graph with statistical+systematic errors.
"[]"	Does the same as option "||" except that it draws additional marks at the ends of the small vertical/horizontal lines. It makes plots less ambiguous in case several graphs are drawn on the same picture.
"0"	By default, when a data point is outside the visible range along the Y axis, the error bars are not drawn. This option forces error bars' drawing for the data points outside the visible range along the Y axis (see example below).
"2"	Error rectangles are drawn.
"3"	A filled area is drawn through the end points of the vertical error bars.
"4"	A smoothed filled area is drawn through the end points of the vertical error bars.
"5"	Error rectangles are drawn like option "2". In addition the contour line around the boxes is drawn. This can be useful when boxes' fill colors are very light or in gray scale mode.

gStyle->SetErrorX(dx) controls the size of the error along x. dx = 0 removes the error along x.

gStyle->SetEndErrorSize(np) controls the size of the lines at the end of the error bars (when option 1 is used). By default np=1. (np represents the number of pixels).

TGraphErrors

A TGraphErrors is a TGraph with error bars. The errors are defined along X and Y and are symmetric: The left and right errors are the same along X and the bottom and up errors are the same along Y.

{
   auto c4 = new TCanvas("c4","c4",200,10,600,400);
   double x[] = {0, 1, 2, 3, 4};
   double y[] = {0, 2, 4, 1, 3};
   double ex[] = {0.1, 0.2, 0.3, 0.4, 0.5};
   double ey[] = {1, 0.5, 1, 0.5, 1};
   auto ge = new TGraphErrors(5, x, y, ex, ey);
   ge->SetTitle("A graph with errors");
   ge->Draw("ap");
}

The option "0" shows the error bars for data points outside range.

{
   auto c48 = new TCanvas("c48","c48",200,10,600,400);
   float x[]     = {1,2,3};
   float err_x[] = {0,0,0};
   float err_y[] = {5,5,5};
   float y[]     = {1,4,9};
   auto tg = new TGraphErrors(3,x,y,err_x,err_y);
   c48->Divide(2,1);
   c48->cd(1); gPad->DrawFrame(0,0,4,8); tg->Draw("PC");
   c48->cd(2); gPad->DrawFrame(0,0,4,8); tg->Draw("0PC");
}

The option "3" shows the errors as a band.

{
   auto c41 = new TCanvas("c41","c41",200,10,600,400);
   double x[] = {0, 1, 2, 3, 4};
   double y[] = {0, 2, 4, 1, 3};
   double ex[] = {0.1, 0.2, 0.3, 0.4, 0.5};
   double ey[] = {1, 0.5, 1, 0.5, 1};
   auto ge = new TGraphErrors(5, x, y, ex, ey);
   ge->SetTitle("Errors as a band");
   ge->SetFillColor(4);
   ge->SetFillStyle(3010);
   ge->Draw("a3");
}

The option "4" is similar to the option "3" except that the band is smoothed. As the following picture shows, this option should be used carefully because the smoothing algorithm may show some (huge) "bouncing" effects. In some cases it looks nicer than option "3" (because it is smooth) but it can be misleading.

{
   auto c42 = new TCanvas("c42","c42",200,10,600,400);
   double x[] = {0, 1, 2, 3, 4};
   double y[] = {0, 2, 4, 1, 3};
   double ex[] = {0.1, 0.2, 0.3, 0.4, 0.5};
   double ey[] = {1, 0.5, 1, 0.5, 1};
   auto ge = new TGraphErrors(5, x, y, ex, ey);
   ge->SetTitle("Errors as a smooth band");
   ge->SetFillColor(6);
   ge->SetFillStyle(3005);
   ge->Draw("a4");
}

The following example shows how the option "[]" can be used to superimpose systematic errors on top of a graph with statistical errors.

{
   auto c43 = new TCanvas("c43","c43",200,10,600,400);
   c43->DrawFrame(0., -0.5, 6., 2);
 
   double x[5]    = {1, 2, 3, 4, 5};
   double zero[5] = {0, 0, 0, 0, 0};
 
   // data set (1) with stat and sys errors
   double py1[5]      = {1.2, 1.15, 1.19, 0.9, 1.4};
   double ey_stat1[5] = {0.2, 0.18, 0.17, 0.2, 0.4};
   double ey_sys1[5]  = {0.5, 0.71, 0.76, 0.5, 0.45};
 
   // data set (2) with stat and sys errors
   double y2[5]       = {0.25, 0.18, 0.29, 0.2, 0.21};
   double ey_stat2[5] = {0.2, 0.18, 0.17, 0.2, 0.4};
   double ey_sys2[5]  = {0.63, 0.19, 0.7, 0.2, 0.7};
 
   // Now draw data set (1)
 
   // We first have to draw it only with the stat errors
   auto graph1 = new TGraphErrors(5, x, py1, zero, ey_stat1);
   graph1->SetMarkerStyle(20);
   graph1->Draw("P");
 
   // Now we have to somehow depict the sys errors
 
   auto graph1_sys = new TGraphErrors(5, x, py1, zero, ey_sys1);
   graph1_sys->Draw("[]");
 
   // Now draw data set (2)
 
   // We first have to draw it only with the stat errors
   auto graph2 = new TGraphErrors(5, x, y2, zero, ey_stat2);
   graph2->SetMarkerStyle(24);
   graph2->Draw("P");
 
   // Now we have to somehow depict the sys errors
 
   auto graph2_sys = new TGraphErrors(5, x, y2, zero, ey_sys2);
   graph2_sys->Draw("[]");
}

TGraphAsymmErrors

A TGraphAsymmErrors is like a TGraphErrors but the errors defined along X and Y are not symmetric: The left and right errors are different along X and the bottom and up errors are different along Y.

{
   auto c44 = new TCanvas("c44","c44",200,10,600,400);
   double ax[] = {0, 1, 2, 3, 4};
   double ay[] = {0, 2, 4, 1, 3};
   double aexl[] = {0.1, 0.2, 0.3, 0.4, 0.5};
   double aexh[] = {0.5, 0.4, 0.3, 0.2, 0.1};
   double aeyl[] = {1, 0.5, 1, 0.5, 1};
   double aeyh[] = {0.5, 1, 0.5, 1, 0.5};
   auto gae = new TGraphAsymmErrors(5, ax, ay, aexl, aexh, aeyl, aeyh);
   gae->SetTitle("Not symmetric errors");
   gae->SetFillColor(2);
   gae->SetFillStyle(3001);
   gae->Draw("a2");
   gae->Draw("p");
}

TGraphBentErrors

A TGraphBentErrors is like a TGraphAsymmErrors. An extra parameter allows to bend the error bars to better see them when several graphs are drawn on the same plot.

{
   auto c45 = new TCanvas("c45","c45",200,10,600,400);
   const Int_t n = 10;
   Double_t x[n]  = {-0.22, 0.05, 0.25, 0.35, 0.5, 0.61,0.7,0.85,0.89,0.95};
   Double_t y[n]  = {1,2.9,5.6,7.4,9,9.6,8.7,6.3,4.5,1};
   Double_t exl[n] = {.05,.1,.07,.07,.04,.05,.06,.07,.08,.05};
   Double_t eyl[n] = {.8,.7,.6,.5,.4,.4,.5,.6,.7,.8};
   Double_t exh[n] = {.02,.08,.05,.05,.03,.03,.04,.05,.06,.03};
   Double_t eyh[n] = {.6,.5,.4,.3,.2,.2,.3,.4,.5,.6};
   Double_t exld[n] = {.0,.0,.0,.0,.0,.0,.0,.0,.0,.0};
   Double_t eyld[n] = {.0,.0,.05,.0,.0,.0,.0,.0,.0,.0};
   Double_t exhd[n] = {.0,.0,.0,.0,.0,.0,.0,.0,.0,.0};
   Double_t eyhd[n] = {.0,.0,.0,.0,.0,.0,.0,.0,.05,.0};
   auto gr = new TGraphBentErrors(n,x,y,exl,exh,eyl,eyh,exld,exhd,eyld,eyhd);
   gr->SetTitle("A graph with bend errors");
   gr->SetMarkerColor(4);
   gr->SetMarkerStyle(21);
   gr->Draw("ALP");
}

TGraphMultiErrors

A TGraphMultiErrors works basically the same way like a TGraphAsymmErrors. It has the possibility to define more than one type / dimension of y-Errors. This is useful if you want to plot statistic and systematic errors at once.

To be able to define different drawing options for the multiple error dimensions the option string can consist of multiple blocks separated by semicolons. The painting method assigns these blocks to the error dimensions. The first block is always used for the general draw options and options concerning the x-Errors. In case there are less than NErrorDimensions + 1 blocks in the option string the first block is also used for the first error dimension which is reserved for statistical errors. The remaining blocks are assigned to the remaining dimensions.

In addition to the draw options of options of TGraphAsymmErrors the following are possible:

Option	Block	Description
"X0"	First one only	Do not draw errors for points with x = 0
"Y0"	First one only	Do not draw errors for points with y = 0
"s=%f"	Any	Scales the x-Errors with f similar to gStyle->SetErrorX(dx) but does not affect them directly (Useful when used in addition with box errors to make the box only half as wide as the x-Errors e.g. s=0.5)
"S"	First one only	Use individual TAttFill and TAttLine attributes for the different error dimensions instead of the global ones.

Per default the Fill and Line Styles of the Graph are being used for all error dimensions. To use the specific ones add the draw option "S" to the first block.

{
   auto c47 = new TCanvas("c47","c47",200,10,600,400);
   double ax[]      = {0, 1, 2, 3, 4};
   double ay[]      = {0, 2, 4, 1, 3};
   double aexl[]    = {0.3, 0.3, 0.3, 0.3, 0.3};
   double aexh[]    = {0.3, 0.3, 0.3, 0.3, 0.3};
   double* aeylstat = new double[5]  {1, 0.5, 1, 0.5, 1};
   double* aeyhstat = new double[5]  {0.5, 1, 0.5, 1, 0.5};
   double* aeylsys  = new double[5]  {0.5, 0.4, 0.8, 0.3, 1.2};
   double* aeyhsys  = new double[5]  {0.6, 0.7, 0.6, 0.4, 0.8};
 
   TGraphMultiErrors* gme = new TGraphMultiErrors("gme", "TGraphMultiErrors Example", 5, ax, ay, aexl, aexh, aeylstat, aeyhstat);
   gme->AddYError(5, aeylsys, aeyhsys);
   gme->SetMarkerStyle(20);
   gme->SetLineColor(kRed);
   gme->GetAttLine(1)->SetLineColor(kBlue);
   gme->GetAttFill(1)->SetFillStyle(0);
 
   gme->Draw("a p s ; ; 5 s=0.5");
}

TGraphPolar options

The drawing options for the polar graphs are the following:

Option	Description
"P"	Polymarker are drawn at each point position.
"E"	Draw error bars.
"F"	Draw fill area (closed polygon).
"L"	Draw line.
"C"	Draw curve.
"A"	Force axis redrawing even if a polargram already exists.
"R"	Use radians for angle coordinates.
"D"	Use degrees for angle coordinates.
"G"	Use grads for angle coordinates.
"O"	Polar labels are drawn orthogonally to the polargram radius.
"N"	Disable the display of the polar labels.

{
   auto c46 = new TCanvas("c46","c46",500,500);
   auto grP1 = new TGraphPolar();
   grP1->SetTitle("TGraphPolar example");
 
   grP1->SetPoint(0, (1*TMath::Pi())/4., 0.05);
   grP1->SetPoint(1, (2*TMath::Pi())/4., 0.10);
   grP1->SetPoint(2, (3*TMath::Pi())/4., 0.15);
   grP1->SetPoint(3, (4*TMath::Pi())/4., 0.20);
   grP1->SetPoint(4, (5*TMath::Pi())/4., 0.25);
   grP1->SetPoint(5, (6*TMath::Pi())/4., 0.30);
   grP1->SetPoint(6, (7*TMath::Pi())/4., 0.35);
   grP1->SetPoint(7, (8*TMath::Pi())/4., 0.40);
 
   grP1->SetMarkerStyle(20);
   grP1->SetMarkerSize(1.);
   grP1->SetMarkerColor(4);
   grP1->SetLineColor(4);
   grP1->Draw("ARLP");
}

Colors automatically picked in palette

Since

ROOT version 6.09/01

When several graphs are painted in the same canvas or when a multi-graph is drawn, it might be useful to have an easy and automatic way to choose their color. The simplest way is to pick colors in the current active color palette. Palette coloring for histogram is activated thanks to the options PFC (Palette Fill Color), PLC (Palette Line Color) and PMC (Palette Marker Color). When one of these options is given to TGraph::Draw the graph get its color from the current color palette defined by gStyle->SetPalette(...). The color is determined according to the number of objects having palette coloring in the current pad.

 
void gr104_palettecolor () {
 
   gStyle->SetOptTitle(kFALSE);
   gStyle->SetPalette(kSolar);
 
   double x[5]  = {1,2,3,4,5};
   double y1[5] = {1.0,2.0,1.0,2.5,3.0};
   double y2[5] = {1.1,2.1,1.1,2.6,3.1};
   double y3[5] = {1.2,2.2,1.2,2.7,3.2};
   double y4[5] = {1.3,2.3,1.3,2.8,3.3};
   double y5[5] = {1.4,2.4,1.4,2.9,3.4};
 
   TGraph *g1 = new TGraph(5,x,y1); g1->SetTitle("Graph with a red star");
   TGraph *g2 = new TGraph(5,x,y2); g2->SetTitle("Graph with a circular marker");
   TGraph *g3 = new TGraph(5,x,y3); g3->SetTitle("Graph with an open square marker");
   TGraph *g4 = new TGraph(5,x,y4); g4->SetTitle("Graph with a blue star");
   TGraph *g5 = new TGraph(5,x,y5); g5->SetTitle("Graph with a full square marker");
 
   g1->SetLineWidth(3); g1->SetMarkerColor(kRed);
   g2->SetLineWidth(3); g2->SetMarkerStyle(kCircle);
   g3->SetLineWidth(3); g3->SetMarkerStyle(kOpenSquare);
   g4->SetLineWidth(3); g4->SetMarkerColor(kBlue);
   g5->SetLineWidth(3); g5->SetMarkerStyle(kFullSquare);
 
   // The Draw option "A" (draw axes) is needed (only) for the first drawn graph
   g1->Draw("CA* PLC PFC");
   g2->Draw("PC  PLC PFC");
   g3->Draw("PC  PLC PFC");
   g4->Draw("*C  PLC PFC");
   g5->Draw("PC  PLC PFC");
 
   gPad->BuildLegend();
}

 
void gr105_multigraphpalettecolor()
{
   auto mg  = new TMultiGraph();
 
   auto gr1 = new TGraph(); gr1->SetMarkerStyle(20);
   auto gr2 = new TGraph(); gr2->SetMarkerStyle(21);
   auto gr3 = new TGraph(); gr3->SetMarkerStyle(23);
   auto gr4 = new TGraph(); gr4->SetMarkerStyle(24);
 
   Double_t dx = 6.28/100;
   Double_t x  = -3.14;
 
   for (int i=0; i<=100; i++) {
      x = x+dx;
      gr1->SetPoint(i,x,2.*TMath::Sin(x));
      gr2->SetPoint(i,x,TMath::Cos(x));
      gr3->SetPoint(i,x,TMath::Cos(x*x));
      gr4->SetPoint(i,x,TMath::Cos(x*x*x));
   }
 
   mg->Add(gr4,"PL");
   mg->Add(gr3,"PL");
   mg->Add(gr2,"*L");
   mg->Add(gr1,"PL");
 
   mg->Draw("A pmc plc");
}

Reverse graphs' axis

Since

ROOT version 6.09/03

When a TGraph is drawn, the X-axis is drawn with increasing values from left to right and the Y-axis from bottom to top. The two options RX and RY allow to change this order. The option RX allows to draw the X-axis with increasing values from right to left and the RY option allows to draw the Y-axis with increasing values from top to bottom. The following example illustrate how to use these options.

{
   auto c = new TCanvas();
   c->Divide(2,1);
   auto g = new TGraphErrors();
   g->SetTitle("Simple Graph");
 
   g->SetPoint(0,-4,-3);
   g->SetPoint(1,1,1);
   g->SetPoint(2,2,1);
   g->SetPoint(3,3,4);
   g->SetPoint(4,5,5);
 
   g->SetPointError(0,1.,2.);
   g->SetPointError(1,2,1);
   g->SetPointError(2,2,3);
   g->SetPointError(3,3,2);
   g->SetPointError(4,4,5);
 
   g->GetXaxis()->SetNdivisions(520);
 
   g->SetMarkerStyle(21);
   c->cd(1); gPad->SetGrid(1,1);
   g->Draw("APL");
 
   c->cd(2); gPad->SetGrid(1,1);
   g->Draw("A RX RY PL");
}

Graphs in logarithmic scale

Like histograms, graphs can be drawn in logarithmic scale along X and Y. When a pad is set to logarithmic scale with TPad::SetLogx() and/or with TPad::SetLogy() the points building the graph are converted into logarithmic scale. But only the points not the lines connecting them which stay linear. This can be clearly seen on the following example:

{
   // A graph with 3 points
   Double_t xmin = 750.;
   Double_t xmax = 1000;
   auto g = new TGraph(3);
   g->SetPoint(0,xmin,0.1);
   g->SetPoint(1,845,0.06504);
   g->SetPoint(2,xmax,0.008);
 
   // The same graph with n points
   Int_t n = 10000;
   Double_t dx = (xmax-xmin)/n;
   Double_t x = xmin;
   auto g2 = new TGraph();
   for (Int_t i=0; i<n; i++) {
      g2->SetPoint(i, x, g->Eval(x));
      x = x + dx;
   }
 
   auto cv = new TCanvas("cv","cv",800,600);
   cv->SetLogy();
   cv->SetGridx();
   cv->SetGridy();
   g->Draw("AL*");
 
   g2->SetMarkerColor(kRed);
   g2->SetMarkerStyle(1);
   g2->Draw("P");
}
 

Highlight mode for graph

Since

ROOT version 6.15/01

Highlight mode

Highlight mode is implemented for TGraph (and for TH1) class. When highlight mode is on, mouse movement over the point will be represented graphically. Point will be highlighted as "point circle" (presented by marker object). Moreover, any highlight (change of point) emits signal TCanvas::Highlighted() which allows the user to react and call their own function. For a better understanding please see also the tutorials $ROOTSYS/tutorials/visualisation/graphs/gr*_highlight*.C files.

Highlight mode is switched on/off by TGraph::SetHighlight() function or interactively from TGraph context menu. TGraph::IsHighlight() to verify whether the highlight mode enabled or disabled, default it is disabled.

root [0] .x $ROOTSYS/tutorials/visualisation/graphs/gr003_errors2.C
root [1] // try SetHighlight() interactively from TGraph context menu

Highlight mode for graph

See how it is used highlight mode and user function (is fully equivalent as for histogram).

NOTE all parameters of user function are taken from

void TCanvas::Highlighted(TVirtualPad *pad, TObject *obj, Int_t x, Int_t y)

• pad is pointer to pad with highlighted graph
• obj is pointer to highlighted graph
• x is highlighted x-th (i-th) point for graph
• y not in use (only for 2D histogram)

For more complex demo please see, for example, hlquantiles.C.

Definition at line 32 of file TGraphPainter.h.

Public Types
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 )) }

Public Member Functions
	TGraphPainter ()
	Default constructor.
	~TGraphPainter () override
	Destructor.
void	AbstractMethod (const char *method) const
	Call this function within a function that you don't want to define as purely virtual, in order not to force all users deriving from that class to implement that maybe (on their side) unused function; but at the same time, emit a run-time warning if they try to call it, telling that it is not implemented in the derived class: action must thus be taken on the user side to override it.
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	Clear (Option_t *="")
virtual TObject *	Clone (const char *newname="") const
	Make a clone of an object using the Streamer facility.
virtual Int_t	Compare (const TObject *obj) const
	Compare abstract method.
void	ComputeLogs (Int_t npoints, Int_t opt)
	Compute the logarithm of variables gxwork and gywork according to the value of Options and put the results in the variables gxworkl and gyworkl.
virtual void	Copy (TObject &object) const
	Copy this to obj.
virtual void	Delete (Option_t *option="")
	Delete this object.
virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object.
Int_t	DistancetoPrimitiveHelper (TGraph *theGraph, Int_t px, Int_t py) override
	Compute distance from point px,py to a graph.
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).
void	DrawPanelHelper (TGraph *theGraph) override
	Display a panel with all histogram drawing options.
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	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py).
void	ExecuteEventHelper (TGraph *theGraph, Int_t event, Int_t px, Int_t py) override
	Execute action corresponding to one event.
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 Int_t	GetHighlightPoint (TGraph *theGraph) const
	Return the highlighted point for theGraph.
virtual const char *	GetIconName () const
	Returns mime type name of object.
virtual const char *	GetName () const
	Returns name of object.
virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py).
char *	GetObjectInfoHelper (TGraph *theGraph, Int_t px, Int_t py) const override
virtual Option_t *	GetOption () const
virtual const char *	GetTitle () const
	Returns title of object.
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.
virtual ULong_t	Hash () const
	Return hash value for this object.
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	HighlightPoint (TGraph *theGraph, Int_t hpoint, Int_t distance)
	Check on highlight point.
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)
TClass *	IsA () const override
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
virtual Bool_t	IsSortable () const
R__ALWAYS_INLINE Bool_t	IsZombie () const
virtual void	ls (Option_t *option="") const
	The ls function lists the contents of a class on stdout.
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 *, size_t)
	Operator delete for sized deallocation.
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 *, size_t)
	Operator delete [] for sized deallocation.
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)
virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself.
void	PaintGraph (TGraph *theGraph, Int_t npoints, const Double_t *x, const Double_t *y, Option_t *chopt) override
	Control function to draw a graph.
void	PaintGraphAsymmErrors (TGraph *theGraph, Option_t *option)
	Paint this TGraphAsymmErrors with its current attributes.
void	PaintGraphBentErrors (TGraph *theGraph, Option_t *option)
	Paint this TGraphBentErrors with its current attributes.
void	PaintGraphErrors (TGraph *theGraph, Option_t *option)
	Paint this TGraphErrors with its current attributes.
void	PaintGrapHist (TGraph *theGraph, Int_t npoints, const Double_t *x, const Double_t *y, Option_t *chopt) override
	This is a service method used by THistPainter to paint 1D histograms.
void	PaintGraphMultiErrors (TGraph *theGraph, Option_t *option)
	Paint this TGraphMultiErrors with its current attributes.
void	PaintGraphPolar (TGraph *theGraph, Option_t *option)
	Paint this TGraphPolar with its current attributes.
void	PaintGraphQQ (TGraph *theGraph, Option_t *option)
	Paint this graphQQ. No options for the time being.
void	PaintGraphReverse (TGraph *theGraph, Option_t *option)
	Paint theGraph reverting values along X and/or Y axis. a new graph is created.
void	PaintGraphSimple (TGraph *theGraph, Option_t *option)
	Paint a simple graph, without errors bars.
void	PaintHelper (TGraph *theGraph, Option_t *option) override
	Paint a any kind of TGraph.
virtual void	PaintHighlightPoint (TGraph *theGraph, Option_t *option)
	Paint highlight point as TMarker object (open circle)
void	PaintPolyLineHatches (TGraph *theGraph, Int_t n, const Double_t *x, const Double_t *y)
	Paint a polyline with hatches on one side showing an exclusion zone.
void	PaintScatter (TScatter *theScatter, Option_t *option) override
	Paint a scatter plot.
void	PaintScatter2D (TScatter2D *theScatter, Option_t *option) override
	Paint a scatter plot.
void	PaintStats (TGraph *theGraph, TF1 *fit) override
	Paint the statistics box with the fit info.
virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list.
virtual void	Print (Option_t *option="") const
	This method must be overridden when a class wants to print itself.
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.
virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out".
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.
void	SetHighlight (TGraph *theGraph) override
	Set highlight (enable/disable) mode for theGraph.
virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id.
void	Smooth (TGraph *theGraph, Int_t npoints, Double_t *x, Double_t *y, Int_t drawtype)
	Smooth a curve given by N points.
void	Streamer (TBuffer &) override
	Stream an object of class TObject.
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.

Static Public Member Functions
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 TVirtualGraphPainter *	GetPainter ()
	Static function returning a pointer to the current graph painter.
static void	SetDtorOnly (void *obj)
	Set destructor only flag.
static void	SetMaxPointsPerLine (Int_t maxp=50)
	Static function to set fgMaxPointsPerLine for graph painting.
static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable.
static void	SetPainter (TVirtualGraphPainter *painter)
	Static function to set an alternative histogram painter.

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

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

Static Protected Member Functions
static void	SavePrimitiveConstructor (std::ostream &out, TClass *cl, const char *variable_name, const char *constructor_agrs="", Bool_t empty_line=kTRUE)
	Save object constructor in the output stream "out".
static void	SavePrimitiveDraw (std::ostream &out, const char *variable_name, Option_t *option=nullptr)
	Save invocation of primitive Draw() method Skipped if option contains "nodraw" string.
static TString	SavePrimitiveVector (std::ostream &out, const char *prefix, Int_t len, Double_t *arr, Int_t flag=0)
	Save array in the output stream "out" as vector.

Protected Attributes
std::vector< Double_t >	gxwork
std::vector< Double_t >	gxworkl
std::vector< Double_t >	gywork
std::vector< Double_t >	gyworkl
	Internal buffers for coordinates. Used for graphs painting.

Static Protected Attributes
static Int_t	fgMaxPointsPerLine = 50
	Number of points per chunks' line when drawing a graph.

Static Private Member Functions
static void	AddToTObjectTable (TObject *)
	Private helper function which will dispatch to TObjectTable::AddObj.

Private Attributes
UInt_t	fBits
	bit field status word
UInt_t	fUniqueID
	object unique identifier

Static Private Attributes
static Longptr_t	fgDtorOnly = 0
	object for which to call dtor only (i.e. no delete)
static Bool_t	fgObjectStat = kTRUE
	if true keep track of objects in TObjectTable
static TVirtualGraphPainter *	fgPainter = nullptr

#include <TGraphPainter.h>

Inheritance diagram for TGraphPainter:

Member Enumeration Documentation

anonymous enum

anonymous enum

inherited

Enumerator
kIsOnHeap	object is on heap
kNotDeleted	object has not been deleted
kZombie	object ctor failed
kInconsistent	class overload Hash but does call RecursiveRemove in destructor
kBitMask

Definition at line 89 of file TObject.h.

anonymous enum

anonymous enum

inherited

Enumerator
kSingleKey	write collection with single key
kOverwrite	overwrite existing object with same name
kWriteDelete	write object, then delete previous key with same name

Definition at line 99 of file TObject.h.

anonymous enum

anonymous enum

protectedinherited

Enumerator

kOnlyPrepStep

Used to request that the class specific implementation of TObject::Write just prepare the objects to be ready to be written but do not actually write them into the TBuffer. This is just for example by TBufferMerger to request that the TTree inside the file calls TTree::FlushBaskets (outside of the merging lock) and TBufferMerger will later ask for the write (inside the merging lock). To take advantage of this feature the class needs to overload TObject::Write and use this enum value accordingly. (See TTree::Write and TObject::Write) Do not use, this feature will be migrate to the Merge function (See TClass and TTree::Merge)

Definition at line 106 of file TObject.h.

EDeprecatedStatusBits

enum TObject::EDeprecatedStatusBits

inherited

Enumerator
kObjInCanvas	for backward compatibility only, use kMustCleanup

Definition at line 84 of file TObject.h.

EStatusBits

enum TObject::EStatusBits

inherited

Enumerator
kCanDelete	if object in a list can be deleted
kMustCleanup	if object destructor must call RecursiveRemove()
kIsReferenced	if object is referenced by a TRef or TRefArray
kHasUUID	if object has a TUUID (its fUniqueID=UUIDNumber)
kCannotPick	if object in a pad cannot be picked
kNoContextMenu	if object does not want context menu
kInvalidObject	if object ctor succeeded but object should not be used

Definition at line 70 of file TObject.h.

Constructor & Destructor Documentation

TGraphPainter()

TGraphPainter::TGraphPainter

(

)

Default constructor.

Definition at line 667 of file TGraphPainter.cxx.

~TGraphPainter()

TGraphPainter::~TGraphPainter ( )

override

Destructor.

Definition at line 675 of file TGraphPainter.cxx.

Member Function Documentation

AbstractMethod()

void TObject::AbstractMethod ( const char * method ) const

inherited

Call this function within a function that you don't want to define as purely virtual, in order not to force all users deriving from that class to implement that maybe (on their side) unused function; but at the same time, emit a run-time warning if they try to call it, telling that it is not implemented in the derived class: action must thus be taken on the user side to override it.

In other word, this method acts as a "runtime purely virtual" warning instead of a "compiler purely virtual" error.

Warning

This interface is a legacy function that is no longer recommended to be used by new development code.

Note

The name "AbstractMethod" does not imply that it's an abstract method in the strict C++ sense.

Definition at line 1149 of file TObject.cxx.

AddToTObjectTable()

void TObject::AddToTObjectTable ( TObject * op )

staticprivateinherited

Private helper function which will dispatch to TObjectTable::AddObj.

Included here to avoid circular dependency between header files.

Definition at line 195 of file TObject.cxx.

AppendPad()

void TObject::AppendPad ( Option_t * option = "" )

virtualinherited

Append graphics object to current pad.

In case no current pad is set yet, create a default canvas with the name "c1".

Definition at line 204 of file TObject.cxx.

Browse()

void TObject::Browse ( TBrowser * b )

virtualinherited

Browse object. May be overridden for another default action.

Reimplemented in TASImage, TRecorder, TEfficiency, TGraph2D, TChain, TTree, TDirectory, TFolder, TMacro, TRemoteObject, TROOT, TStyle, TSystemDirectory, TSystemFile, TTask, TCollection, TPair, TBrowserObject, TBaseClass, TClass, TGeoManager, TGeoNode, TGeoVolume, TGeoOverlap, TGeoTrack, TCanvas, TPad, TAxis3D, TGeometry, TNode, TRootIconList, THbookBranch, THbookFile, THbookKey, TF1, TGraph, TH1, THnBase, ROOT::Internal::THnBaseBrowsable, THStack, TMultiDimFit, TMultiGraph, TPrincipal, TDirectoryFile, TKey, TKeyMapFile, TMapFile, TSPlot, TDatabasePDG, TGenerator, TParticleClassPDG, TApplicationRemote, RooPlot, TBranch, TVirtualBranchBrowsable, TCollectionPropertyBrowsable, TBranchClones, TBranchElement, TBranchObject, TBranchSTL, TLeaf, TNtuple, TNtupleD, TTreePerfStats, and ROOT::Experimental::XRooFit::xRooNode.

Definition at line 218 of file TObject.cxx.

CheckedHash()

ULong_t TObject::CheckedHash ( )

inlineinherited

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

The intent is for this routine to be called instead of directly calling the function Hash during "insert" operations. See TObject::HasInconsistenTObjectHash();

(*) The setup is consistent when all classes in the class hierarchy that overload TObject::Hash do call ROOT::CallRecursiveRemoveIfNeeded in their destructor. i.e. it is safe to call the Hash virtual function during the RecursiveRemove operation.

Definition at line 332 of file TObject.h.

Class()

static TClass * TGraphPainter::Class ( )

static

Returns

TClass describing this class

Class_Name()

static const char * TGraphPainter::Class_Name ( )

static

Returns

Name of this class

Class_Version()

static constexpr Version_t TGraphPainter::Class_Version ( )

inlinestaticconstexpr

Returns

Version of this class

Definition at line 73 of file TGraphPainter.h.

ClassName()

const char * TObject::ClassName ( ) const

virtualinherited

Returns name of class to which the object belongs.

Definition at line 227 of file TObject.cxx.

Clear()

virtual void TObject::Clear ( Option_t * = "" )

inlinevirtualinherited

Reimplemented in TMVA::ResultsClassification, TMVA::ResultsMulticlass, TMVA::ResultsRegression, TMVA::ResultsClassification, TMVA::ResultsMulticlass, TMVA::ResultsRegression, TMrbSubevent_Caen, TNotifyLinkBase, TRefTable, ROOT::TSchemaRule, TGTextEdit, TGTextView, TGView, TGHtml, TStreamerInfo, TMatrixT< Element >, TMatrixT< AReal >, TMatrixT< Double_t >, TMatrixTSparse< Element >, TMatrixTSparse< Double_t >, TMatrixTSym< Element >, TMatrixTSym< Double_t >, TVectorT< Element >, TVectorT< Double_t >, TVirtualStreamerInfo, TMVA::MinuitWrapper, RooLinkedList, TUsrHitBuffer, TFumili, TListOfEnums, TListOfEnumsWithLock, TDirectory, TFolder, TNamed, TProcessID, TTask, TBits, TBtree, TClonesArray, THashList, THashTable, TList, TMap, TObjArray, TOrdCollection, TRefArray, TDictAttributeMap, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TGeoRotation, TGeoCombiTrans, TGeoGenTrans, TGeoHMatrix, TCanvas, TPad, TLegend, TPaveText, TGTextEntry, TBackCompFitter, TFormula, TGraph2D, TMultiDimFit, TPrincipal, ROOT::v5::TFormula, TFitter, TLinearFitter, TBranchRef, TEventList, JetEvent, TVirtualPad, TCollection, TVirtualFitter, TMatrixTBase< Element >, TMatrixTBase< AReal >, and TMatrixTBase< Double_t >.

Definition at line 127 of file TObject.h.

Clone()

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

virtualinherited

Make a clone of an object using the Streamer facility.

If the object derives from TNamed, this function is called by TNamed::Clone. TNamed::Clone uses the optional argument to set a new name to the newly created object.

If the object class has a DirectoryAutoAdd function, it will be called at the end of the function with the parameter gDirectory. This usually means that the object will be appended to the current ROOT directory.

Reimplemented in TMVA::MinuitWrapper, RooCatType, TImage, RooStudyPackage, RooLinkedList, RooStats::ModelConfig, TNamed, TCollection, TClass, TFunction, TFunctionTemplate, TMethod, TMethodCall, TASImage, TH1, TStreamerInfo, TMinuit, RooAbsStudy, RooDataHist, RooDataSet, RooWorkspace, TChainIndex, TTreeIndex, TF1, RooAbsArg, RooAbsBinning, RooAbsCollection, RooCmdArg, RooFitResult, RooTemplateProxy< T >, RooTemplateProxy< const RooHistFunc >, RooTemplateProxy< RooAbsCategory >, RooTemplateProxy< RooAbsPdf >, RooTemplateProxy< RooAbsReal >, RooTemplateProxy< RooAbsRealLValue >, RooTemplateProxy< RooMultiCategory >, RooTemplateProxy< RooRealVar >, and RooStats::HypoTestResult.

Definition at line 243 of file TObject.cxx.

Compare()

Int_t TObject::Compare ( const TObject * obj ) const

virtualinherited

Compare abstract method.

Must be overridden if a class wants to be able to compare itself with other objects. Must return -1 if this is smaller than obj, 0 if objects are equal and 1 if this is larger than obj.

Reimplemented in TEnvRec, TFileInfo, TNamed, TObjString, TParameter< AParamType >, TParameter< Long64_t >, TUrl, TCollection, TGeoBranchArray, TGeoOverlap, TStructNode, TStructNodeProperty, TGFSFrameElement, TGLBFrameElement, RooAbsArg, and RooDouble.

Definition at line 258 of file TObject.cxx.

ComputeLogs()

void TGraphPainter::ComputeLogs	(	Int_t	npoints,
		Int_t	opt )

Compute the logarithm of variables gxwork and gywork according to the value of Options and put the results in the variables gxworkl and gyworkl.

npoints : Number of points in gxwork and in gywork.

• opt = 1 ComputeLogs is called from PaintGrapHist
• opt = 0 ComputeLogs is called from PaintGraph

Definition at line 690 of file TGraphPainter.cxx.

Copy()

void TObject::Copy ( TObject & object ) const

virtualinherited

Copy this to obj.

Reimplemented in TDirectory, TFolder, TSystemDirectory, TSystemFile, TGTextEdit, TGTextView, TDirectoryFile, TFile, TArc, TArrow, TAxis, TBox, TColor, TCrown, TEllipse, TF1, TFormula, TF12, TF2, TF3, ROOT::v5::TFormula, TFrame, THelix, TAxis3D, TH1, TH1C, TH1S, TH1I, TH1L, TH1F, TH1D, TH2, TH2C, TH2S, TH2I, TH2L, TH2F, TH2D, TH3, TH3C, TH3S, TH3I, TH3L, TH3F, TH3D, TProfile, TProfile2D, TProfile3D, TLine, TMarker, TNamed, TH2Poly, TLegend, TLegendEntry, TF1Convolution, TF1NormSum, TF1AbsComposition, TPaletteAxis, TPave, TPaveLabel, TPaveClass, TPolyLine, TPolyLine3D, TPolyMarker3D, TPolyMarker, TPieSlice, TStyle, TLatex, TMathText, TText, TWbox, and TXTRU.

Definition at line 159 of file TObject.cxx.

DeclFileName()

static const char * TGraphPainter::DeclFileName ( )

inlinestatic

Returns

Name of the file containing the class declaration

Definition at line 73 of file TGraphPainter.h.

Delete()

void TObject::Delete ( Option_t * option = "" )

virtualinherited

Delete this object.

Typically called as a command via the interpreter. Normally use "delete" operator when object has been allocated on the heap.

Reimplemented in TDirectory, TDirectoryFile, TFile, TSystemDirectory, TSystemFile, TTreeViewer, TGItemContext, TCanvas, TGFrame, TGTextEdit, TAxis, RooLinkedList, TExMap, TObjectTable, TProtoClass, TKeySQL, TKeyXML, TQCommand, TBtree, TClonesArray, THashList, THashTable, TList, TMap, TObjArray, TOrdCollection, TRefArray, TListOfDataMembers, TListOfEnums, TListOfEnumsWithLock, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TThread, TKey, TMVA::Results, TTree, and TCollection.

Definition at line 268 of file TObject.cxx.

DistancetoPrimitive()

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

virtualinherited

Computes distance from point (px,py) to the object.

This member function must be implemented for each graphics primitive. This default function returns a big number (999999).

Reimplemented in TGeoTessellated, TStyle, TGeoBBox, TGeoCompositeShape, TGeoCone, TGeoConeSeg, TGeoEltu, TGeoHalfSpace, TGeoHype, TGeoNode, TGeoParaboloid, TGeoPcon, TGeoPgon, TGeoScaledShape, TGeoShapeAssembly, TGeoSphere, TGeoTorus, TGeoTube, TGeoTubeSeg, TGeoVolume, TGeoXtru, TGeoOverlap, TGeoTrack, TGeoVGShape, TASImage, TColorWheel, TPad, TBox, TCrown, TCurlyArc, TCurlyLine, TDiamond, TEllipse, TGraphPolargram, TLine, TMarker, TPave, TPie, TPolyLine, TText, TGraphEdge, TGraphNode, TAxis3D, TBRIK, TMarker3DBox, TNode, TPCON, TPolyLine3D, TPolyMarker3D, TSPHE, TTUBE, TTUBS, TXTRU, TGL5DDataSet, TGLHistPainter, TGLParametricEquation, TGLTH3Composition, TGLViewer, TAxis, TEfficiency, TF1, TF2, TF3, TGraph, TGraph2D, TH1, THStack, TMultiGraph, TPolyMarker, TScatter, TScatter2D, TSpline, THistPainter, TPaletteAxis, TGenerator, TParticle, TPrimary, TFileDrawMap, TTreePerfStats, TParallelCoord, TParallelCoordRange, TParallelCoordVar, TSpider, TGeoShape, TPoints3DABC, TVirtualHistPainter, TPieSlice, and TGLScenePad.

Definition at line 284 of file TObject.cxx.

DistancetoPrimitiveHelper()

Int_t TGraphPainter::DistancetoPrimitiveHelper ( TGraph * theGraph, Int_t px, Int_t py )

overridevirtual

Compute distance from point px,py to a graph.

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

Implements TVirtualGraphPainter.

Definition at line 717 of file TGraphPainter.cxx.

DoError()

void TObject::DoError ( int level, const char * location, const char * fmt, va_list va ) const

protectedvirtualinherited

Interface to ErrorHandler (protected).

Reimplemented in TTreeViewer, and TThread.

Definition at line 1059 of file TObject.cxx.

Draw()

void TObject::Draw ( Option_t * option = "" )

virtualinherited

Default Draw method for all objects.

Reimplemented in TClassTree, ROOT::RGeoPainter, TGListTree, TGPicture, TMultiDimFit, TRatioPlot, TGraph, TGraphTime, THStack, TMultiGraph, TChain, TTree, TFITSHDU, TEfficiency, RooStats::HypoTestInverterPlot, ROOT::Experimental::XRooFit::xRooNLLVar::xRooHypoPoint, ROOT::Experimental::XRooFit::xRooNLLVar::xRooHypoSpace, ROOT::Experimental::XRooFit::xRooNode, TGeoParallelWorld, TDirectory, TCollection, TBrowser, TClass, TGeoBatemanSol, TGeoNode, TGeoPhysicalNode, TGeoPolygon, TGeoShape, TGeoVolume, TGeoOverlap, TGeoPainter, TGeoTrack, TGeoVGShape, TASImage, TButton, TCanvas, TColorWheel, TPad, TArrow, TBox, TDiamond, TEllipse, TFrame, TLegend, TMarker, TPave, TPaveLabel, TPavesText, TPaveText, TPolyLine, TWbox, TGraphStruct, TEveGeoNode, TEveGeoTopNode, TGeometry, THelix, TNode, TNodeDiv, TPolyLine3D, TPolyMarker3D, TStructViewer, TStructViewerGUI, TF1, TF2, TF3, TH1, TPolyMarker, TSpline, TFile, TMatrixTBase< Element >, TMatrixTBase< AReal >, TMatrixTBase< Double_t >, TVectorT< Element >, TVectorT< Double_t >, TMultiLayerPerceptron, TGenerator, RooAbsData, TTreePerfStats, TParallelCoordVar, TGItemContext, TVirtualPad, TPie, TGraph2D, TGraphPolar, TGraphPolargram, TParallelCoord, TParallelCoordRange, TSpider, RooPlot, and RooStats::SamplingDistPlot.

Definition at line 293 of file TObject.cxx.

DrawClass()

void TObject::DrawClass ( ) const

virtualinherited

Draw class inheritance tree of the class to which this object belongs.

If a class B inherits from a class A, description of B is drawn on the right side of description of A. Member functions overridden by B are shown in class A with a blue line crossing-out the corresponding member function. The following picture is the class inheritance tree of class TPaveLabel:

Reimplemented in TSystemDirectory, TSystemFile, and TGFrame.

Definition at line 308 of file TObject.cxx.

DrawClone()

TObject * TObject::DrawClone ( Option_t * option = "" ) const

virtualinherited

Draw a clone of this object in the current selected pad with: gROOT->SetSelectedPad(c1).

If pad was not selected - gPad will be used.

Note

For histograms, use the more specialised TH1::DrawCopy().

Reimplemented in TSystemDirectory, TSystemFile, TGFrame, TAxis, and TCanvas.

Definition at line 319 of file TObject.cxx.

DrawPanelHelper()

void TGraphPainter::DrawPanelHelper ( TGraph * theGraph )

overridevirtual

Display a panel with all histogram drawing options.

Implements TVirtualGraphPainter.

Definition at line 796 of file TGraphPainter.cxx.

Dump()

void TObject::Dump ( ) const

virtualinherited

Dump contents of object on stdout.

Using the information in the object dictionary (class TClass) each data member is interpreted. If a data member is a pointer, the pointer value is printed

The following output is the Dump of a TArrow object:

fAngle                   0           Arrow opening angle (degrees)
fArrowSize               0.2         Arrow Size
fOption.*fData
fX1                      0.1         X of 1st point
fY1                      0.15        Y of 1st point
fX2                      0.67        X of 2nd point
fY2                      0.83        Y of 2nd point
fUniqueID                0           object unique identifier
fBits                    50331648    bit field status word
fLineColor               1           line color
fLineStyle               1           line style
fLineWidth               1           line width
fFillColor               19          fill area color
fFillStyle               1001        fill area style

Reimplemented in TSystemFile, TCollection, TClass, TGFrame, and TGPack.

Definition at line 367 of file TObject.cxx.

Error()

void TObject::Error ( const char * location, const char * fmt, ... ) const

virtualinherited

Issue error message.

Use "location" to specify the method where the error occurred. Accepts standard printf formatting arguments.

Reimplemented in TFitResult.

Definition at line 1098 of file TObject.cxx.

Execute() [1/2]

void TObject::Execute ( const char * method, const char * params, Int_t * error = nullptr )

virtualinherited

Execute method on this object with the given parameter string, e.g.

"3.14,1,\"text\"".

Reimplemented in TMethodCall, TCling, TInterpreter, ROOT::R::TRInterface, and TContextMenu.

Definition at line 378 of file TObject.cxx.

Execute() [2/2]

void TObject::Execute ( TMethod * method, TObjArray * params, Int_t * error = nullptr )

virtualinherited

Execute method on this object with parameters stored in the TObjArray.

The TObjArray should contain an argv vector like:

argv[0] ... argv[n] = the list of TObjString parameters

Reimplemented in TCling, TMethodCall, TInterpreter, ROOT::R::TRInterface, and TContextMenu.

Definition at line 398 of file TObject.cxx.

ExecuteEvent()

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

virtualinherited

Execute action corresponding to an event at (px,py).

This method must be overridden if an object can react to graphics events.

Reimplemented in TParallelCoord, TParallelCoordRange, TParallelCoordVar, TGeoManager, TGeoNode, TGeoShape, TGeoVolume, TGeoOverlap, TGeoTrack, TASImage, TASPaletteEditor::LimitLine, TButton, TCanvas, TGroupButton, TPad, TSliderBox, TBox, TCrown, TCurlyArc, TCurlyLine, TDiamond, TEllipse, TFrame, TGraphPolargram, TLine, TLink, TMarker, TPave, TPolyLine, TText, TWbox, TGraphEdge, TGraphNode, TAxis3D, TMarker3DBox, TNode, TPolyLine3D, TPolyMarker3D, TView3D, TGL5DDataSet, TGLEventHandler, TGLHistPainter, TGLParametricEquation, TGLTH3Composition, TGLViewer, TAxis, TEfficiency, TF1, TF2, TF3, TGraph, TGraph2D, TH1, TPolyMarker, TScatter, TScatter2D, TSpline, THistPainter, TPaletteAxis, TGenerator, TParticle, TPrimary, TTreePerfStats, TSpider, TView, TVirtualHistPainter, TPie, and TGLScenePad.

Definition at line 415 of file TObject.cxx.

ExecuteEventHelper()

void TGraphPainter::ExecuteEventHelper ( TGraph * theGraph, 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 the left mouse button is clicked on one of the line end points, this point follows the cursor until button is released.

If the middle mouse button clicked, the line is moved parallel to itself until the button is released.

Implements TVirtualGraphPainter.

Definition at line 821 of file TGraphPainter.cxx.

Fatal()

void TObject::Fatal ( const char * location, const char * fmt, ... ) const

virtualinherited

Issue fatal error message.

Use "location" to specify the method where the fatal error occurred. Accepts standard printf formatting arguments.

Definition at line 1126 of file TObject.cxx.

FindObject() [1/2]

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

virtualinherited

Must be redefined in derived classes.

This function is typically used with TCollections, but can also be used to find an object by name inside this object.

Reimplemented in TListOfEnums, TMap, TDirectory, TFolder, TROOT, TListOfTypes, TListOfTypes, TBtree, TCollection, THashList, THashTable, TList, TObjArray, TListOfDataMembers, TListOfDataMembers, TListOfEnums, TListOfEnumsWithLock, TListOfFunctions, TListOfFunctionTemplates, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TPad, TGeometry, THbookFile, TGraph, TGraph2D, TH1, RooAbsCollection, and RooLinkedList.

Definition at line 425 of file TObject.cxx.

FindObject() [2/2]

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

virtualinherited

Must be redefined in derived classes.

This function is typically used with TCollections, but can also be used to find an object inside this object.

Reimplemented in TMap, TDirectory, TFolder, TROOT, TListOfTypes, TBtree, TCollection, THashList, THashTable, TList, TObjArray, TListOfDataMembers, TListOfEnums, TListOfEnumsWithLock, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TPad, TGeometry, THbookFile, TGraph, TGraph2D, TH1, RooAbsCollection, and RooLinkedList.

Definition at line 435 of file TObject.cxx.

GetDrawOption()

Option_t * TObject::GetDrawOption ( ) const

virtualinherited

Get option used by the graphics system to draw this object.

Note that before calling object.GetDrawOption(), you must have called object.Draw(..) before in the current pad.

Reimplemented in TBrowser, TFitEditor, TGedFrame, TGFileBrowser, TRootBrowser, and TRootBrowserLite.

Definition at line 445 of file TObject.cxx.

GetDtorOnly()

Longptr_t TObject::GetDtorOnly ( )

staticinherited

Return destructor only flag.

Definition at line 1196 of file TObject.cxx.

GetHighlightPoint()

Int_t TGraphPainter::GetHighlightPoint ( TGraph * theGraph ) const

virtual

Return the highlighted point for theGraph.

Definition at line 1110 of file TGraphPainter.cxx.

GetIconName()

const char * TObject::GetIconName ( ) const

virtualinherited

Returns mime type name of object.

Used by the TBrowser (via TGMimeTypes class). Override for class of which you would like to have different icons for objects of the same class.

Reimplemented in TSystemFile, TGeoVolume, TASImage, TGMainFrame, TKey, ROOT::Experimental::XRooFit::xRooNode, TBranch, TVirtualBranchBrowsable, TMethodBrowsable, and TBranchElement.

Definition at line 472 of file TObject.cxx.

GetName()

const char * TObject::GetName ( ) const

virtualinherited

Returns name of object.

This default method returns the class name. Classes that give objects a name should override this method.

Reimplemented in TSQLClassColumnInfo, TSQLClassInfo, TSQLColumnData, TEnvRec, TNamed, TObjString, TParameter< AParamType >, TParameter< Long64_t >, TQCommand, TQConnection, TQSlot, TCollection, TPair, TRealData, TGeoDecayChannel, TGeoShape, TVirtualGeoTrack, TGeoVGShape, TPad, TGaxis, TPave, TEveGeoNode, TPolyMarker3D, TGLEmbeddedViewer, TGLPShapeObj, TGLSAViewer, TStructNode, TGMenuEntry, TGMenuTitle, TGPicture, TGWindow, TIconBoxThumb, TArchiveMember, TMapFile, TXMLAttr, TStatistic, TParticle, TPrimary, RooAbsCollection, RooCatType, RooLinkedList, TMVA::DataSetInfo, TMVA::FitterBase, TMVA::MethodBase, TMVA::OptionBase, TMVA::PDF, TMVA::Reader, TMVA::VariableTransformBase, TTreePerfStats, TTVRecord, TTVSession, and TVirtualPad.

Definition at line 462 of file TObject.cxx.

GetObjectInfo()

char * TObject::GetObjectInfo ( Int_t px, Int_t py ) const

virtualinherited

Returns string containing info about the object at position (px,py).

This method is typically overridden by classes of which the objects can report peculiarities for different positions. Returned string will be re-used (lock in MT environment).

Reimplemented in TGeoNode, TGeoVolume, TGeoTrack, TASImage, TColorWheel, TAxis3D, TNode, TGL5DDataSet, TGLHistPainter, TGLParametricEquation, TGLTH3Composition, TF1, TF2, TGraph, TH1, THistPainter, TPaletteAxis, TFileDrawMap, TParallelCoordVar, and TVirtualHistPainter.

Definition at line 491 of file TObject.cxx.

GetObjectInfoHelper()

char * TGraphPainter::GetObjectInfoHelper ( TGraph * theGraph, Int_t px, Int_t py ) const

overridevirtual

Implements TVirtualGraphPainter.

Definition at line 1101 of file TGraphPainter.cxx.

GetObjectStat()

Bool_t TObject::GetObjectStat ( )

staticinherited

Get status of object stat flag.

Definition at line 1181 of file TObject.cxx.

GetOption()

virtual Option_t * TObject::GetOption ( ) const

inlinevirtualinherited

Reimplemented in TGeoVolume, TArrow, TGaxis, TLegendEntry, TPave, TPolyLine, TAxis3D, THelix, TNode, TPolyLine3D, TPolyMarker3D, TH1, TPolyMarker, TFile, TMapFile, TPSocket, TSocket, TUDPSocket, TSelector, and TPoints3DABC.

Definition at line 147 of file TObject.h.

GetPainter()

TVirtualGraphPainter * TVirtualGraphPainter::GetPainter ( )

staticinherited

Static function returning a pointer to the current graph painter.

If the graph painter does not exist a default painter (singleton) is created.

Definition at line 28 of file TVirtualGraphPainter.cxx.

GetTitle()

const char * TObject::GetTitle ( ) const

virtualinherited

Returns title of object.

This default method returns the class title (i.e. description). Classes that give objects a title should override this method.

Reimplemented in TNamed, TQCommand, TPair, TClassMenuItem, TBaseClass, TASImage, TPad, TGaxis, TPaveLabel, TEveGeoNode, TEvePointSet, TGTextButton, TGGroupFrame, TGLabel, TGTextLBEntry, TGLVEntry, TGTextEntry, TRootIconList, TAxis, TKey, TMapFile, TParticle, TPrimary, Axis2, TParallelCoordSelect, and TVirtualPad.

Definition at line 507 of file TObject.cxx.

GetUniqueID()

UInt_t TObject::GetUniqueID ( ) const

virtualinherited

Return the unique object id.

Definition at line 480 of file TObject.cxx.

HandleTimer()

Bool_t TObject::HandleTimer ( TTimer * timer )

virtualinherited

Execute action in response of a timer timing out.

This method must be overridden if an object has to react to timers.

Reimplemented in TGWindow, TGuiBldDragManager, TGraphTime, TGLEventHandler, TGCommandPlugin, TGDNDManager, TGFileContainer, TGPopupMenu, TGScrollBar, TGShutter, TGTextEdit, TGTextEditor, TGTextEntry, TGTextView, TGToolTip, TGHtml, and TTreeViewer.

Definition at line 516 of file TObject.cxx.

Hash()

ULong_t TObject::Hash ( ) const

virtualinherited

Return hash value for this object.

Note: If this routine is overloaded in a derived class, this derived class should also add

ROOT::CallRecursiveRemoveIfNeeded(*this)

Otherwise, when RecursiveRemove is called (by ~TObject or example) for this type of object, the transversal of THashList and THashTable containers will will have to be done without call Hash (and hence be linear rather than logarithmic complexity). You will also see warnings like

Error in <ROOT::Internal::TCheckHashRecursiveRemoveConsistency::CheckRecursiveRemove>: The class SomeName overrides
TObject::Hash but does not call TROOT::RecursiveRemove in its destructor.

Reimplemented in TEnvRec, TNamed, TObjString, TParameter< AParamType >, TParameter< Long64_t >, TCollection, TPair, TASImagePlugin, TASPluginGS, TPad, TImagePlugin, TPave, TGObject, TGPicture, TIconBoxThumb, TStatistic, and RooLinkedList.

Definition at line 539 of file TObject.cxx.

HasInconsistentHash()

Bool_t TObject::HasInconsistentHash ( ) const

inlineinherited

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

missing call to RecursiveRemove in destructor).

Note: Since the consistency is only tested for during inserts, this routine will return true for object that have never been inserted whether or not they have a consistent setup. This has no negative side-effect as searching for the object with the right or wrong Hash will always yield a not-found answer (Since anyway no hash can be guaranteed unique, there is always a check)

Definition at line 366 of file TObject.h.

HighlightPoint()

void TGraphPainter::HighlightPoint ( TGraph * theGraph, Int_t hpoint, Int_t distance )

virtual

Check on highlight point.

Definition at line 1136 of file TGraphPainter.cxx.

Info()

void TObject::Info ( const char * location, const char * fmt, ... ) const

virtualinherited

Issue info message.

Use "location" to specify the method where the warning occurred. Accepts standard printf formatting arguments.

Definition at line 1072 of file TObject.cxx.

InheritsFrom() [1/2]

Bool_t TObject::InheritsFrom ( const char * classname ) const

virtualinherited

Returns kTRUE if object inherits from class "classname".

Reimplemented in TClass.

Definition at line 549 of file TObject.cxx.

InheritsFrom() [2/2]

Bool_t TObject::InheritsFrom ( const TClass * cl ) const

virtualinherited

Returns kTRUE if object inherits from TClass cl.

Reimplemented in TClass.

Definition at line 557 of file TObject.cxx.

Inspect()

void TObject::Inspect ( ) const

virtualinherited

Dump contents of this object in a graphics canvas.

Same action as Dump but in a graphical form. In addition pointers to other objects can be followed.

The following picture is the Inspect of a histogram object:

Reimplemented in TSystemFile, TInspectorObject, TGFrame, and ROOT::Experimental::XRooFit::xRooNode.

Definition at line 570 of file TObject.cxx.

InvertBit()

void TObject::InvertBit ( UInt_t f )

inlineinherited

Definition at line 206 of file TObject.h.

IsA()

TClass * TGraphPainter::IsA ( ) const

inlineoverridevirtual

Returns

TClass describing current object

Reimplemented from TObject.

Definition at line 73 of file TGraphPainter.h.

IsDestructed()

Bool_t TObject::IsDestructed ( ) const

inlineinherited

IsDestructed.

Note

This function must be non-virtual as it can be used on destructed (but not yet modified) memory. This is used for example in TClonesArray to record the element that have been destructed but not deleted and thus are ready for re-use (by operator new with placement).

Returns

true if this object's destructor has been run.

Definition at line 186 of file TObject.h.

IsEqual()

Bool_t TObject::IsEqual ( const TObject * obj ) const

virtualinherited

Default equal comparison (objects are equal if they have the same address in memory).

More complicated classes might want to override this function.

Reimplemented in TObjString, TQCommand, TPair, and TGObject.

Definition at line 589 of file TObject.cxx.

IsFolder()

Bool_t TObject::IsFolder ( ) const

virtualinherited

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

Reimplemented in TDirectory, TFolder, TRemoteObject, TROOT, TSystemDirectory, TTask, TCollection, TPair, TBrowserObject, TBaseClass, TClass, TGeoManager, TGeoNode, TGeoNodeMatrix, TGeoVolume, TGeoOverlap, TGeoTrack, TCanvas, TPad, TAxis3D, TGeometry, TNode, TRootIconList, THbookFile, THbookKey, THnBase, ROOT::Internal::THnBaseBrowsable, TMultiDimFit, TPrincipal, TKey, TMapFile, TSPlot, TDatabasePDG, TParticleClassPDG, TApplicationRemote, ROOT::Experimental::XRooFit::xRooNode, TBranch, TVirtualBranchBrowsable, TBranchClones, TBranchElement, TBranchObject, TBranchSTL, and TTree.

Definition at line 579 of file TObject.cxx.

IsOnHeap()

R__ALWAYS_INLINE Bool_t TObject::IsOnHeap ( ) const

inlineinherited

Definition at line 160 of file TObject.h.

IsSortable()

virtual Bool_t TObject::IsSortable ( ) const

inlinevirtualinherited

Reimplemented in TFileInfo, TNamed, TObjString, TParameter< AParamType >, TParameter< Long64_t >, TUri, TUrl, TCollection, TGeoBranchArray, TGeoOverlap, TPave, TStructNode, TStructNodeProperty, TGFSFrameElement, TGLBFrameElement, RooAbsArg, and RooDouble.

Definition at line 158 of file TObject.h.

IsZombie()

R__ALWAYS_INLINE Bool_t TObject::IsZombie ( ) const

inlineinherited

Definition at line 161 of file TObject.h.

ls()

void TObject::ls ( Option_t * option = "" ) const

virtualinherited

The ls function lists the contents of a class on stdout.

Ls output is typically much less verbose then Dump().

Reimplemented in THbookFile, ROOT::Experimental::XRooFit::xRooBrowser, TParameter< AParamType >, TParameter< Long64_t >, TFree, TVirtualStreamerInfo, TQSlot, TClass, TStatistic, TApplication, TColor, TDirectory, TFolder, TNamed, TQCommand, TQUndoManager, TQConnection, TROOT, TQConnectionList, TCollection, TFunction, ROOT::TSchemaRule, ROOT::Detail::TSchemaRuleSet, TStreamerElement, TStreamerBase, TStreamerSTL, TGeoNode, TAnnotation, TCanvas, TClassTree, TPad, TBox, TEllipse, TImage, TLine, TMarker, TPave, TPolyLine, TText, TPolyLine3D, TPolyMarker3D, TGLayoutHints, TGFrameElement, THStack, TPolyMarker, TDirectoryFile, TFile, TKey, TMapFile, TStreamerInfo, TChain, TChainElement, TFriendElement, TVirtualPad, TTask, TNode, and TGeometry.

Definition at line 598 of file TObject.cxx.

MakeZombie()

void TObject::MakeZombie ( )

inlineprotectedinherited

Definition at line 55 of file TObject.h.

MayNotUse()

void TObject::MayNotUse ( const char * method ) const

inherited

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).

Definition at line 1160 of file TObject.cxx.

Notify()

Bool_t TObject::Notify ( )

virtualinherited

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

Different objects in ROOT use the Notify method for different purposes, in coordination with other objects that call this method at the appropriate time.

For example, TLeaf uses it to load class information; TBranchRef to load contents of referenced branches TBranchRef; most notably, based on Notify, TChain implements a callback mechanism to inform interested parties when it switches to a new sub-tree.

Reimplemented in TMessageHandler, TNotifyLink< Type >, TNotifyLink< RNoCleanupNotifierHelper >, TNotifyLink< ROOT::Detail::TBranchProxy >, TNotifyLink< TTreeReader >, TFileHandler, TSignalHandler, TStdExceptionHandler, TProcessEventTimer, TTimer, TIdleTimer, TSingleShotCleaner, TCollection, TRefTable, TBrowserTimer, TInterruptHandler, TTermInputHandler, TThreadTimer, TGLRedrawTimer, TViewTimer, TGContainerKeyboardTimer, TGContainerScrollTimer, TGInputHandler, TViewUpdateTimer, TPopupDelayTimer, TRepeatTimer, TSBRepeatTimer, TGTextEditHist, TInsCharCom, TDelCharCom, TBreakLineCom, TInsTextCom, TDelTextCom, TBlinkTimer, TTipDelayTimer, TGuiBldDragManagerRepeatTimer, TARInterruptHandler, TASLogHandler, TASInterruptHandler, TASSigPipeHandler, TASInputHandler, TSocketHandler, TTimeOutTimer, TBranchElement, TBranchRef, TLeafObject, TSelector, TTree, TSelectorDraw, TSelectorEntries, TTreeFormula, TTreeFormulaManager, TTreeReader, h1analysis, h1analysisTreeReader, and TSysEvtHandler.

Definition at line 618 of file TObject.cxx.

Obsolete()

void TObject::Obsolete ( const char * method, const char * asOfVers, const char * removedFromVers ) const

inherited

Use this method to declare a method obsolete.

Specify as of which version the method is obsolete and as from which version it will be removed.

Definition at line 1169 of file TObject.cxx.

operator delete() [1/3]

void TObject::operator delete ( void * ptr, size_t size )

inherited

Operator delete for sized deallocation.

Definition at line 1234 of file TObject.cxx.

operator delete() [2/3]

void TObject::operator delete ( void * ptr )

inherited

Operator delete.

Definition at line 1212 of file TObject.cxx.

operator delete() [3/3]

void TObject::operator delete ( void * ptr, void * vp )

inherited

Only called by placement new when throwing an exception.

Definition at line 1266 of file TObject.cxx.

operator delete[]() [1/3]

void TObject::operator delete[] ( void * ptr, size_t size )

inherited

Operator delete [] for sized deallocation.

Definition at line 1245 of file TObject.cxx.

operator delete[]() [2/3]

void TObject::operator delete[] ( void * ptr )

inherited

Operator delete [].

Definition at line 1223 of file TObject.cxx.

operator delete[]() [3/3]

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

inherited

Only called by placement new[] when throwing an exception.

Definition at line 1274 of file TObject.cxx.

operator new() [1/2]

void * TObject::operator new ( size_t sz )

inlineinherited

Definition at line 189 of file TObject.h.

operator new() [2/2]

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

inlineinherited

Definition at line 191 of file TObject.h.

operator new[]() [1/2]

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

inlineinherited

Definition at line 190 of file TObject.h.

operator new[]() [2/2]

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

inlineinherited

Definition at line 192 of file TObject.h.

Paint()

void TObject::Paint ( Option_t * option = "" )

virtualinherited

This method must be overridden if a class wants to paint itself.

The difference between Paint() and Draw() is that when a object draws itself it is added to the display list of the pad in which it is drawn (and automatically redrawn whenever the pad is redrawn). While paint just draws the object without adding it to the pad display list.

Reimplemented in TPie, TSQLFile, TXMLFile, ROOT::RGeoPainter, TGaxis, TGraph, TGraphTime, THStack, TMultiGraph, TScatter, TScatter2D, TTreePerfStats, ROOT::Experimental::RTreeMapPainter, TEfficiency, TRatioPlot, TGeoBoolNode, TGeoUnion, TGeoIntersection, TGeoSubtraction, TMarker3DBox, TGL5DDataSet, TGLHistPainter, TGLParametricEquation, TGLTH3Composition, TGraph2DPainter, TSpectrum2Painter, TFileDrawMap, TDirectory, TExec, TMacro, TStyle, TBits, TCollection, TGeoNode, TGeoPhysicalNode, TGeoShape, TGeoVolume, TGeoOverlap, TGeoPainter, TGeoTrack, TGeoVGShape, TASImage, TASPaletteEditor::PaintPalette, TASPaletteEditor::LimitLine, TAnnotation, TButton, TCanvas, TClassTree, TColorWheel, TPad, TArrow, TBox, TCrown, TDiamond, TEllipse, TFrame, TLatex, TLegend, TLine, TMarker, TMathText, TPave, TPaveLabel, TPaveStats, TPavesText, TPaveText, TPolyLine, TText, TWbox, TGraphEdge, TGraphNode, TEveArrow, TEveCaloViz, TEveDigitSet, TEveGeoTopNode, TEveGeoShape, TEvePlot3D, TEvePointSet, TEveProjectionAxes, TEveScene, TEveShape, TEveStraightLineSet, TEveText, TEveTriangleSet, TAxis3D, TNode, TNodeDiv, TPolyLine3D, TPolyMarker3D, TShape, TF1, TF2, TF3, TGraph2D, TH1, TPolyMarker, TSpline, THistPainter, TPaletteAxis, TFile, TGenerator, TParticle, TPrimary, TParallelCoordVar, TVirtualPad, TVirtualGeoPainter, TVirtualGeoTrack, TVirtualHistPainter, TParallelCoordRange, TSpider, TGraphPolargram, and TParallelCoord.

Definition at line 631 of file TObject.cxx.

PaintGraph()

void TGraphPainter::PaintGraph ( TGraph * theGraph, Int_t npoints, const Double_t * x, const Double_t * y, Option_t * chopt )

overridevirtual

Control function to draw a graph.

Implements TVirtualGraphPainter.

Definition at line 1283 of file TGraphPainter.cxx.

PaintGraphAsymmErrors()

void TGraphPainter::PaintGraphAsymmErrors	(	TGraph *	theGraph,
		Option_t *	option )

Paint this TGraphAsymmErrors with its current attributes.

Definition at line 2437 of file TGraphPainter.cxx.

PaintGraphBentErrors()

void TGraphPainter::PaintGraphBentErrors	(	TGraph *	theGraph,
		Option_t *	option )

Paint this TGraphBentErrors with its current attributes.

Definition at line 3190 of file TGraphPainter.cxx.

PaintGraphErrors()

void TGraphPainter::PaintGraphErrors	(	TGraph *	theGraph,
		Option_t *	option )

Paint this TGraphErrors with its current attributes.

Definition at line 3507 of file TGraphPainter.cxx.

PaintGrapHist()

void TGraphPainter::PaintGrapHist ( TGraph * theGraph, Int_t npoints, const Double_t * x, const Double_t * y, Option_t * chopt )

overridevirtual

This is a service method used by THistPainter to paint 1D histograms.

It is not used to paint TGraph.

Input parameters:

• npoints : Number of points in X or in Y.
• x[npoints] or x[0] : x coordinates or (xmin,xmax).
• y[npoints] or y[0] : y coordinates or (ymin,ymax).
• chopt : Option.

The aspect of the histogram is done according to the value of the chopt.

Option	Description
"R"	Graph is drawn horizontally, parallel to X axis. (default is vertically, parallel to Y axis).If option R is selected the user must give 2 values for Y (y[0]=YMIN and y[1]=YMAX) or N values for X, one for each channel. Otherwise the user must give, N values for Y, one for each channel or 2 values for X (x[0]=XMIN and x[1]=XMAX)
"L"	A simple polyline between every points is drawn.
"H"	An Histogram with equidistant bins is drawn as a polyline.
"F"	An histogram with equidistant bins is drawn as a fill area. Contour is not drawn unless chopt='H' is also selected..
"N"	Non equidistant bins (default is equidistant). If N is the number of channels array X and Y must be dimensioned as follow: If option R is not selected (default) then the user must give (N+1) values for X (limits of channels) or N values for Y, one for each channel. Otherwise the user must give (N+1) values for Y (limits of channels). or N values for X, one for each channel
"F1"	Idem as 'F' except that fill area base line is the minimum of the pad instead of Y=0.
"F2"	Draw a Fill area polyline connecting the center of bins
"C"	A smooth Curve is drawn.
"*"	A Star is plotted at the center of each bin.
"P"	Idem with the current marker.
"P0"	Idem with the current marker. Empty bins also drawn.
"B"	A Bar chart with equidistant bins is drawn as fill areas (Contours are drawn).
"]["	"Cutoff" style. When this option is selected together with H option, the first and last vertical lines of the histogram are not drawn.

Implements TVirtualGraphPainter.

Definition at line 1710 of file TGraphPainter.cxx.

PaintGraphMultiErrors()

void TGraphPainter::PaintGraphMultiErrors	(	TGraph *	theGraph,
		Option_t *	option )

Paint this TGraphMultiErrors with its current attributes.

Definition at line 2728 of file TGraphPainter.cxx.

PaintGraphPolar()

void TGraphPainter::PaintGraphPolar	(	TGraph *	theGraph,
		Option_t *	option )

Paint this TGraphPolar with its current attributes.

Definition at line 3797 of file TGraphPainter.cxx.

PaintGraphQQ()

void TGraphPainter::PaintGraphQQ	(	TGraph *	theGraph,
		Option_t *	option )

Paint this graphQQ. No options for the time being.

Definition at line 4072 of file TGraphPainter.cxx.

PaintGraphReverse()

void TGraphPainter::PaintGraphReverse	(	TGraph *	theGraph,
		Option_t *	option )

Paint theGraph reverting values along X and/or Y axis. a new graph is created.

Definition at line 4132 of file TGraphPainter.cxx.

PaintGraphSimple()

void TGraphPainter::PaintGraphSimple	(	TGraph *	theGraph,
		Option_t *	option )

Paint a simple graph, without errors bars.

Definition at line 4852 of file TGraphPainter.cxx.

PaintHelper()

void TGraphPainter::PaintHelper ( TGraph * theGraph, Option_t * option )

overridevirtual

Paint a any kind of TGraph.

Implements TVirtualGraphPainter.

Definition at line 1211 of file TGraphPainter.cxx.

PaintHighlightPoint()

void TGraphPainter::PaintHighlightPoint ( TGraph * theGraph, Option_t * option )

virtual

Paint highlight point as TMarker object (open circle)

Definition at line 1165 of file TGraphPainter.cxx.

PaintPolyLineHatches()

void TGraphPainter::PaintPolyLineHatches	(	TGraph *	theGraph,
		Int_t	n,
		const Double_t *	x,
		const Double_t *	y )

Paint a polyline with hatches on one side showing an exclusion zone.

x and y are the vectors holding the polyline and n the number of points in the polyline and w the width of the hatches. w can be negative. This method is not meant to be used directly. It is called automatically according to the line style convention.

Definition at line 4888 of file TGraphPainter.cxx.

PaintScatter()

void TGraphPainter::PaintScatter ( TScatter * theScatter, Option_t * option )

overridevirtual

Paint a scatter plot.

Implements TVirtualGraphPainter.

Definition at line 4394 of file TGraphPainter.cxx.

PaintScatter2D()

void TGraphPainter::PaintScatter2D ( TScatter2D * theScatter, Option_t * option )

overridevirtual

Paint a scatter plot.

Implements TVirtualGraphPainter.

Definition at line 4612 of file TGraphPainter.cxx.

PaintStats()

void TGraphPainter::PaintStats ( TGraph * theGraph, TF1 * fit )

overridevirtual

Paint the statistics box with the fit info.

Implements TVirtualGraphPainter.

Definition at line 5089 of file TGraphPainter.cxx.

Pop()

void TObject::Pop ( )

virtualinherited

Pop on object drawn in a pad to the top of the display list.

I.e. it will be drawn last and on top of all other primitives.

Reimplemented in TPad, TFrame, and TVirtualPad.

Definition at line 640 of file TObject.cxx.

Print()

void TObject::Print ( Option_t * option = "" ) const

virtualinherited

This method must be overridden when a class wants to print itself.

Reimplemented in RooCmdArg, TPad, TVirtualPad, RooLinkedList, TObjString, TParameter< AParamType >, TParameter< Long64_t >, TRootBrowserHistoryCursor, TRolke, TSQLFile, TXMLFile, TGTextEdit, TStreamerInfoActions::TActionSequence, TStatistic, TMVA::TNeuron, TBranchSTL, TGraph, TGraph2D, TGraph2DAsymmErrors, TGraph2DErrors, TGraphAsymmErrors, TGraphBentErrors, TGraphErrors, TGraphMultiErrors, THStack, TMultiGraph, TScatter, TScatter2D, TBenchmark, TMatrixTBase< Element >, TMatrixTBase< AReal >, TMatrixTBase< Double_t >, TGeoDecayChannel, TPluginHandler, TPluginManager, TQSlot, TDecompBase, TDecompBK, TDecompChol, TDecompLU, TDecompQRH, TDecompSparse, TDecompSVD, TQpDataDens, TQpDataSparse, TDatabasePDG, TParticleClassPDG, TParticlePDG, ROOT::Experimental::XRooFit::xRooNLLVar::xRooHypoPoint, ROOT::Experimental::XRooFit::xRooNLLVar::xRooHypoSpace, ROOT::Experimental::XRooFit::xRooNode, TPrincipal, TFoamCell, TFoamVect, TMVA::PDEFoamCell, TMVA::PDEFoamVect, TMVA::Event, TMVA::OptionBase, TMVA::Option< T >, TCling, TColor, TDirectory, TEnv, TFileCollection, TInetAddress, TMacro, TMessageHandler, TNamed, TStopwatch, TUri, TUrl, TBits, TClassTable, TCollection, THashTable, TObjectTable, TFunction, TGDMLMatrix, TGeoBranchArray, TGeoElement, TGeoIsotope, TGeoElementRN, TGeoBatemanSol, TGeoElementTable, TGeoMatrix, TGeoOpticalSurface, TGeoSkinSurface, TGeoBorderSurface, TGeoPhysicalNode, TGeoRegion, TGeoTessellated, TGeoVolume, TGeoVoxelFinder, TGeoOverlap, TGeoTrack, TAnnotation, TBox, TEllipse, TLegend, TLegendEntry, TLine, TMarker, TPave, TPaveText, TPolyLine, TText, TEveTrans, ROOT::Experimental::REveTrans, THelix, TPolyLine3D, TPolyMarker3D, TXTRU, TGFont, TGFontPool, TGFrame, TGCompositeFrame, TGGC, TGGCPool, TGLayoutHints, TGFrameElement, TGMimeTypes, TGPicture, TGPicturePool, TGWindow, THbookTree, TF1, TFitResult, TFormula, TH1, THnBase, TPolyMarker, ROOT::v5::TFormula, TSpectrum, TSpectrum2, TSpectrum3, TFile, TFileCacheRead, TFileCacheWrite, TKey, TMapFile, TMemFile, TZIPFile, TZIPMember, TSQLStructure, TVectorT< Element >, TVectorT< Double_t >, TLorentzVector, TQuaternion, TVector2, TVector3, TQpVar, TAttParticle, TParticle, TPrimary, TApplicationRemote, TSQLColumnInfo, TSQLTableInfo, RooStats::ModelConfig, TBranch, TBranchClones, TBranchElement, TBranchObject, TBranchRef, TChain, TEventList, TTree, TTreeCache, TTreeCacheUnzip, TTreeIndex, TTreePerfStats, TParallelCoordVar, TMultiDimFit, TParallelCoordRange, TFileInfo, TFileInfoMeta, Roo1DTable, RooAbsArg, RooAbsBinning, RooAbsCollection, RooAbsData, RooAbsDataStore, RooAbsGenContext, RooCurve, RooEllipse, RooCatType, RooFitResult, RooGenFitStudy, RooHist, RooMsgService, RooNumGenConfig, RooNumIntConfig, RooPlot, RooSharedProperties, and RooWorkspace.

Definition at line 661 of file TObject.cxx.

Read()

Int_t TObject::Read ( const char * name )

virtualinherited

Read contents of object with specified name from the current directory.

First the key with the given name is searched in the current directory, next the key buffer is deserialized into the object. The object must have been created before via the default constructor. See TObject::Write().

Reimplemented in TKeyXML, TBuffer, TKey, and TKeySQL.

Definition at line 673 of file TObject.cxx.

RecursiveRemove()

void TObject::RecursiveRemove ( TObject * obj )

virtualinherited

Recursively remove this object from a list.

Typically implemented by classes that can contain multiple references to a same object.

Reimplemented in THistPainter, TCling, TDirectory, TFolder, TProcessID, TROOT, TCollection, THashList, TList, TObjArray, TBrowser, TObjectSpy, TObjectRefSpy, TListOfDataMembers, TListOfEnums, TListOfEnumsWithLock, TListOfFunctions, TListOfFunctionTemplates, ROOT::Internal::TCheckHashRecursiveRemoveConsistency, TViewPubDataMembers, TViewPubFunctions, TDialogCanvas, TInspectCanvas, TPad, TLegend, TGeometry, TNode, ROOT::RBrowserDataCleanup, TFitEditor, TGedEditor, TH1Editor, TH2Editor, TGFileBrowser, TRootBrowser, TRootBrowserLite, TRootContextMenu, TRootBrowserHistory, TEfficiency, TGraph, TGraph2D, TH1, THStack, TMultiGraph, TFileMerger, RooAbsCollection, RooAbsData, RooLinkedList, RooMCStudy, RooWorkspace, TChain, TFriendElement, TTree, TTreePlayer, and TVirtualPad.

Definition at line 684 of file TObject.cxx.

ResetBit()

void TObject::ResetBit ( UInt_t f )

inlineinherited

Definition at line 203 of file TObject.h.

SaveAs()

void TObject::SaveAs ( const char * filename = "", Option_t * option = "" ) const

virtualinherited

Save this object in the file specified by filename.

• if "filename" contains ".root" the object is saved in filename as root binary file.
• if "filename" contains ".xml" the object is saved in filename as a xml ascii file.
• if "filename" contains ".cc" the object is saved in filename as C code independent from ROOT. The code is generated via SavePrimitive(). Specific code should be implemented in each object to handle this option. Like in TF1::SavePrimitive().

• otherwise the object is written to filename as a CINT/C++ script. The C++ code to rebuild this object is generated via SavePrimitive(). The "option" parameter is passed to SavePrimitive. By default it is an empty string. It can be used to specify the Draw option in the code generated by SavePrimitive.

  The function is available via the object context menu.

Reimplemented in TSpline, TFolder, TGeoVolume, TClassTree, TPad, TPaveClass, TGObject, TSpline3, TSpline5, ROOT::Experimental::XRooFit::xRooNode, TTreePerfStats, TVirtualPad, TGraph, and TH1.

Definition at line 708 of file TObject.cxx.

SavePrimitive()

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

virtualinherited

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

Reimplemented in TGeoTessellated, TGraphEdge, TGraphNode, TGeoIdentity, TStyle, TCurlyArc, TCurlyLine, TGedMarkerSelect, TGedPatternSelect, TGColorSelect, TGFont, TGVerticalLayout, TGHorizontalLayout, TGRowLayout, TGColumnLayout, TGMatrixLayout, TGTileLayout, TGListLayout, TGListDetailsLayout, TGTextLBEntry, TGNumberEntryField, TGNumberEntry, TGTableLayoutHints, TGTableLayout, TGTextEdit, TGTextView, TGXYLayoutHints, TGXYLayout, TRootContainer, TGHtml, TEfficiency, TExec, TMacro, TGeoArb8, TGeoTrap, TGeoGtra, TGeoBBox, TGeoBoolNode, TGeoUnion, TGeoIntersection, TGeoSubtraction, TGeoCompositeShape, TGeoCone, TGeoConeSeg, TGeoElementRN, TGeoDecayChannel, TGeoEltu, TGeoHalfSpace, TGeoHype, TGeoMaterial, TGeoMixture, TGeoTranslation, TGeoRotation, TGeoCombiTrans, TGeoHMatrix, TGeoMedium, TGeoPara, TGeoParaboloid, TGeoPatternX, TGeoPatternY, TGeoPatternZ, TGeoPatternParaX, TGeoPatternParaY, TGeoPatternParaZ, TGeoPatternTrapZ, TGeoPatternCylR, TGeoPatternCylPhi, TGeoPatternSphR, TGeoPatternSphTheta, TGeoPatternSphPhi, TGeoPcon, TGeoPgon, TGeoScaledShape, TGeoShapeAssembly, TGeoSphere, TGeoTorus, TGeoTrd1, TGeoTrd2, TGeoTube, TGeoTubeSeg, TGeoCtub, TGeoVolume, TGeoXtru, TASImage, TAnnotation, TButton, TCanvas, TGroupButton, TPad, TPaveClass, TSlider, TSliderBox, TArc, TArrow, TBox, TCrown, TCutG, TDiamond, TEllipse, TFrame, TGaxis, TGraphPolar, TGraphPolargram, TLatex, TLegend, TLine, TMarker, TMathText, TPave, TPaveLabel, TPaveStats, TPavesText, TPaveText, TPolyLine, TText, TWbox, TGraphStruct, TAxis3D, THelix, TMarker3DBox, TPolyLine3D, TPolyMarker3D, TGHorizontal3DLine, TGVertical3DLine, TGButton, TGTextButton, TGPictureButton, TGCheckButton, TGRadioButton, TGButtonGroup, TGVButtonGroup, TGHButtonGroup, TGContainer, TGCanvas, TGComboBox, TGLineStyleComboBox, TGLineWidthComboBox, TGDockableFrame, TGDoubleVSlider, TGDoubleHSlider, TGFrame, TGCompositeFrame, TGVerticalFrame, TGHorizontalFrame, TGMainFrame, TGTransientFrame, TGGroupFrame, TGFSComboBox, TGFileContainer, TGGC, TGIcon, TGLabel, TGLayoutHints, TGListBox, TGListTree, TGListView, TGLVContainer, TGMdiFrame, TGMdiMainFrame, TGMdiMenuBar, TGPopupMenu, TGMenuTitle, TGMenuBar, TGProgressBar, TGHProgressBar, TGVProgressBar, TGHScrollBar, TGVScrollBar, TGShapedFrame, TGShutterItem, TGShutter, TGVSlider, TGHSlider, TGSplitFrame, TGVSplitter, TGHSplitter, TGVFileSplitter, TGStatusBar, TGTabLayout, TGTab, TGTextEntry, TGToolBar, TGTripleVSlider, TGTripleHSlider, TRootEmbeddedCanvas, TF1, TF12, TF2, TF3, TGraph, TGraph2D, TGraph2DAsymmErrors, TGraph2DErrors, TGraphAsymmErrors, TGraphBentErrors, TGraphErrors, TGraphMultiErrors, TH1, TH2Poly, THStack, TMultiGraph, TPolyMarker, TProfile, TProfile2D, TProfile3D, TScatter, TScatter2D, TSpline3, TSpline5, TPaletteAxis, TChain, TTreePerfStats, TParallelCoord, TParallelCoordVar, TPie, and TPieSlice.

Definition at line 858 of file TObject.cxx.

SavePrimitiveConstructor()

void TObject::SavePrimitiveConstructor ( std::ostream & out, TClass * cl, const char * variable_name, const char * constructor_agrs = "", Bool_t empty_line = kTRUE )

staticprotectedinherited

Save object constructor in the output stream "out".

Can be used as first statement when implementing SavePrimitive() method for the object

Definition at line 777 of file TObject.cxx.

SavePrimitiveDraw()

void TObject::SavePrimitiveDraw ( std::ostream & out, const char * variable_name, Option_t * option = nullptr )

staticprotectedinherited

Save invocation of primitive Draw() method Skipped if option contains "nodraw" string.

Definition at line 845 of file TObject.cxx.

SavePrimitiveVector()

TString TObject::SavePrimitiveVector ( std::ostream & out, const char * prefix, Int_t len, Double_t * arr, Int_t flag = 0 )

staticprotectedinherited

Save array in the output stream "out" as vector.

Create unique variable name based on prefix value Returns name of vector which can be used in constructor or in other places of C++ code If flag === kTRUE, just add empty line If flag === 111, check if array is empty and return nullptr or <vectorname>.data()

Definition at line 796 of file TObject.cxx.

SetBit() [1/2]

void TObject::SetBit ( UInt_t f )

inlineinherited

Definition at line 202 of file TObject.h.

SetBit() [2/2]

void TObject::SetBit ( UInt_t f, Bool_t set )

inherited

Set or unset the user status bits as specified in f.

Definition at line 888 of file TObject.cxx.

SetDrawOption()

void TObject::SetDrawOption ( Option_t * option = "" )

virtualinherited

Set drawing option for object.

This option only affects the drawing style and is stored in the option field of the TObjOptLink supporting a TPad's primitive list (TList). Note that it does not make sense to call object.SetDrawOption(option) before having called object.Draw().

Reimplemented in TSystemDirectory, TSystemFile, TPad, TGFrame, TAxis, TBrowser, TPaveStats, TGedFrame, TRootBrowserLite, and RooPlot.

Definition at line 871 of file TObject.cxx.

SetDtorOnly()

void TObject::SetDtorOnly ( void * obj )

staticinherited

Set destructor only flag.

Definition at line 1204 of file TObject.cxx.

SetHighlight()

void TGraphPainter::SetHighlight ( TGraph * theGraph )

overridevirtual

Set highlight (enable/disable) mode for theGraph.

Implements TVirtualGraphPainter.

Definition at line 1120 of file TGraphPainter.cxx.

SetMaxPointsPerLine()

void TGraphPainter::SetMaxPointsPerLine ( Int_t maxp = 50 )

static

Static function to set fgMaxPointsPerLine for graph painting.

When graphs are painted with lines, they are split into chunks of length fgMaxPointsPerLine. This allows to paint line with an "infinite" number of points. In some case this "chunks painting" technic may create artefacts at the chunk's boundaries. For instance when zooming deeply in a PDF file. To avoid this effect it might be necessary to increase the chunks' size using this function: TGraphPainter::SetMaxPointsPerLine(20000).

Definition at line 5676 of file TGraphPainter.cxx.

SetObjectStat()

void TObject::SetObjectStat ( Bool_t stat )

staticinherited

Turn on/off tracking of objects in the TObjectTable.

Definition at line 1188 of file TObject.cxx.

SetPainter()

void TVirtualGraphPainter::SetPainter ( TVirtualGraphPainter * painter )

staticinherited

Static function to set an alternative histogram painter.

Definition at line 46 of file TVirtualGraphPainter.cxx.

SetUniqueID()

void TObject::SetUniqueID ( UInt_t uid )

virtualinherited

Set the unique object id.

Definition at line 899 of file TObject.cxx.

Smooth()

void TGraphPainter::Smooth	(	TGraph *	theGraph,
		Int_t	npoints,
		Double_t *	x,
		Double_t *	y,
		Int_t	drawtype )

Smooth a curve given by N points.

The original code is from an underlaying routine for Draw based on the CERN GD3 routine TVIPTE:

Author - Marlow etc. Modified by - P. Ward Date - 3.10.1973

This method draws a smooth tangentially continuous curve through the sequence of data points P(I) I=1,N where P(I)=(X(I),Y(I)). The curve is approximated by a polygonal arc of short vectors. The data points can represent open curves, P(1) != P(N) or closed curves P(2) == P(N). If a tangential discontinuity at P(I) is required, then set P(I)=P(I+1). Loops are also allowed.

Reference Marlow and Powell, Harwell report No.R.7092.1972 MCCONALOGUE, Computer Journal VOL.13, NO4, NOV1970P p392 6

• npoints : Number of data points.
• x : Abscissa
• y : Ordinate

Definition at line 5207 of file TGraphPainter.cxx.

Streamer()

void TGraphPainter::Streamer ( TBuffer & R__b )

overridevirtual

Stream an object of class TObject.

Reimplemented from TObject.

StreamerNVirtual()

void TGraphPainter::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 73 of file TGraphPainter.h.

SysError()

void TObject::SysError ( const char * location, const char * fmt, ... ) const

virtualinherited

Issue system error message.

Use "location" to specify the method where the system error occurred. Accepts standard printf formatting arguments.

Definition at line 1112 of file TObject.cxx.

TestBit()

R__ALWAYS_INLINE Bool_t TObject::TestBit ( UInt_t f ) const

inlineinherited

Definition at line 204 of file TObject.h.

TestBits()

Int_t TObject::TestBits ( UInt_t f ) const

inlineinherited

Definition at line 205 of file TObject.h.

UseCurrentStyle()

void TObject::UseCurrentStyle ( )

virtualinherited

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

Reimplemented in TCanvas, TPad, TFrame, TPaveStats, TPaveText, TAxis3D, TGraph, TH1, and TTree.

Definition at line 909 of file TObject.cxx.

Warning()

void TObject::Warning ( const char * location, const char * fmt, ... ) const

virtualinherited

Issue warning message.

Use "location" to specify the method where the warning occurred. Accepts standard printf formatting arguments.

Definition at line 1084 of file TObject.cxx.

Write() [1/2]

Int_t TObject::Write ( const char * name = nullptr, Int_t option = 0, Int_t bufsize = 0 )

virtualinherited

Write this object to the current directory.

For more see the const version of this method.

Reimplemented in TSQLFile, TXMLFile, TDirectory, TBuffer, ROOT::TBufferMergerFile, TDirectoryFile, TFile, TParallelMergingFile, TCollection, TMap, and TTree.

Definition at line 989 of file TObject.cxx.

Write() [2/2]

Int_t TObject::Write ( const char * name = nullptr, Int_t option = 0, Int_t bufsize = 0 ) const

virtualinherited

Write this object to the current directory.

The data structure corresponding to this object is serialized. The corresponding buffer is written to the current directory with an associated key with name "name".

Writing an object to a file involves the following steps:

• Creation of a support TKey object in the current directory. The TKey object creates a TBuffer object.
• The TBuffer object is filled via the class::Streamer function.
• If the file is compressed (default) a second buffer is created to hold the compressed buffer.
• Reservation of the corresponding space in the file by looking in the TFree list of free blocks of the file.
• The buffer is written to the file.

Bufsize can be given to force a given buffer size to write this object. By default, the buffersize will be taken from the average buffer size of all objects written to the current file so far.

If a name is specified, it will be the name of the key. If name is not given, the name of the key will be the name as returned by GetName().

The option can be a combination of: kSingleKey, kOverwrite or kWriteDelete Using the kOverwrite option a previous key with the same name is overwritten. The previous key is deleted before writing the new object. Using the kWriteDelete option a previous key with the same name is deleted only after the new object has been written. This option is safer than kOverwrite but it is slower. NOTE: Neither kOverwrite nor kWriteDelete reduces the size of a TFile– the space is simply freed up to be overwritten; in the case of a TTree, it is more complicated. If one opens a TTree, appends some entries, then writes it out, the behaviour is effectively the same. If, however, one creates a new TTree and writes it out in this way, only the metadata is replaced, effectively making the old data invisible without deleting it. TTree::Delete() can be used to mark all disk space occupied by a TTree as free before overwriting its metadata this way. The kSingleKey option is only used by TCollection::Write() to write a container with a single key instead of each object in the container with its own key.

An object is read from the file into memory via TKey::Read() or via TObject::Read().

The function returns the total number of bytes written to the file. It returns 0 if the object cannot be written.

Reimplemented in TSQLFile, TXMLFile, TDirectory, TBuffer, TDirectoryFile, TFile, TParallelMergingFile, TCollection, TMap, and TTree.

Definition at line 964 of file TObject.cxx.

Member Data Documentation

fBits

UInt_t TObject::fBits

privateinherited

bit field status word

Definition at line 47 of file TObject.h.

fgDtorOnly

Longptr_t TObject::fgDtorOnly = 0

staticprivateinherited

object for which to call dtor only (i.e. no delete)

Definition at line 49 of file TObject.h.

fgMaxPointsPerLine

Int_t TGraphPainter::fgMaxPointsPerLine = 50

staticprotected

Number of points per chunks' line when drawing a graph.

Definition at line 69 of file TGraphPainter.h.

fgObjectStat

Bool_t TObject::fgObjectStat = kTRUE

staticprivateinherited

if true keep track of objects in TObjectTable

Definition at line 50 of file TObject.h.

fgPainter

TVirtualGraphPainter * TVirtualGraphPainter::fgPainter = nullptr

staticprivateinherited

Definition at line 32 of file TVirtualGraphPainter.h.

fUniqueID

UInt_t TObject::fUniqueID

privateinherited

object unique identifier

Definition at line 46 of file TObject.h.

gxwork

std::vector<Double_t> TGraphPainter::gxwork

protected

Definition at line 71 of file TGraphPainter.h.

gxworkl

std::vector<Double_t> TGraphPainter::gxworkl

protected

Definition at line 71 of file TGraphPainter.h.

gywork

std::vector<Double_t> TGraphPainter::gywork

protected

Definition at line 71 of file TGraphPainter.h.

gyworkl

std::vector<Double_t> TGraphPainter::gyworkl

protected

Internal buffers for coordinates. Used for graphs painting.

Definition at line 71 of file TGraphPainter.h.

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

• hist/histpainter/inc/TGraphPainter.h
• hist/histpainter/src/TGraphPainter.cxx