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1/// \file
2/// \ingroup tutorial_graphs
3/// \notebook
4/// Palette coloring for graphs is activated thanks to the options `PFC` (Palette Fill
5/// Color), `PLC` (Palette Line Color) and `AMC` (Palette Marker Color). When
6/// one of these options is given to `TGraph::Draw` the `TGraph` get its color
7/// from the current color palette defined by `gStyle->SetPalette(…)`. The color
8/// is determined according to the number of objects having palette coloring in
9/// the current pad.
11/// In this example five graphs are displayed with palette coloring for lines and
12/// and filled area. The graphs are drawn with curves (`C` option) and one can see
13/// the color of each graph is picked inside the palette `kSolar`. The
14/// same is visible on filled polygons in the automatically built legend.
16/// \macro_image
17/// \macro_code
19/// \author Olivier Couet
21void graphpalettecolor () {
26 double x[5] = {1,2,3,4,5};
27 double y1[5] = {1.0,2.0,1.0,2.5,3.0};
28 double y2[5] = {1.1,2.1,1.1,2.6,3.1};
29 double y3[5] = {1.2,2.2,1.2,2.7,3.2};
30 double y4[5] = {1.3,2.3,1.3,2.8,3.3};
31 double y5[5] = {1.4,2.4,1.4,2.9,3.4};
33 TGraph *g1 = new TGraph(5,x,y1); g1->SetTitle("Graph with a red star");
34 TGraph *g2 = new TGraph(5,x,y2); g2->SetTitle("Graph with a circular marker");
35 TGraph *g3 = new TGraph(5,x,y3); g3->SetTitle("Graph with an open square marker");
36 TGraph *g4 = new TGraph(5,x,y4); g4->SetTitle("Graph with a blue star");
37 TGraph *g5 = new TGraph(5,x,y5); g5->SetTitle("Graph with a full square marker");
39 g1->SetLineWidth(3); g1->SetMarkerColor(kRed);
45 g1->Draw("CA* PLC PFC");
46 g2->Draw("PC PLC PFC");
47 g3->Draw("PC PLC PFC");
48 g4->Draw("*C PLC PFC");
49 g5->Draw("PC PLC PFC");
51 gPad->BuildLegend();
const Bool_t kFALSE
Definition: RtypesCore.h:92
@ kRed
Definition: Rtypes.h:66
@ kBlue
Definition: Rtypes.h:66
@ kOpenSquare
Definition: TAttMarker.h:52
@ kCircle
Definition: TAttMarker.h:49
@ kFullSquare
Definition: TAttMarker.h:51
@ kSolar
Definition: TColor.h:123
R__EXTERN TStyle * gStyle
Definition: TStyle.h:412
#define gPad
Definition: TVirtualPad.h:287
virtual void SetLineWidth(Width_t lwidth)
Set the line width.
Definition: TAttLine.h:43
virtual void SetMarkerColor(Color_t mcolor=1)
Set the marker color.
Definition: TAttMarker.h:38
virtual void SetMarkerStyle(Style_t mstyle=1)
Set the marker style.
Definition: TAttMarker.h:40
A TGraph is an object made of two arrays X and Y with npoints each.
Definition: TGraph.h:41
virtual void SetTitle(const char *title="")
Change (i.e.
Definition: TGraph.cxx:2339
virtual void Draw(Option_t *chopt="")
Draw this graph with its current attributes.
Definition: TGraph.cxx:769
void SetOptTitle(Int_t tit=1)
Definition: TStyle.h:318
void SetPalette(Int_t ncolors=kBird, Int_t *colors=0, Float_t alpha=1.)
See TColor::SetPalette.
Definition: TStyle.cxx:1782
Double_t x[n]
Definition: legend1.C:17