doc/v618/graphShade_8C.html

void graphShade() {

   TCanvas *c1 = new TCanvas("c1",

      "A Simple Graph Example",200,10,700,500);


   c1->SetGrid();

   c1->DrawFrame(0,0,2.2,12);


   const Int_t n = 20;

   Double_t x[n], y[n],ymin[n], ymax[n];

   Int_t i;

   for (i=0;i<n;i++) {

     x[i] = 0.1+i*0.1;

     ymax[i] = 10*sin(x[i]+0.2);

     ymin[i] = 8*sin(x[i]+0.1);

     y[i] = 9*sin(x[i]+0.15);

   }

   TGraph *grmin = new TGraph(n,x,ymin);

   TGraph *grmax = new TGraph(n,x,ymax);

   TGraph *gr    = new TGraph(n,x,y);

   TGraph *grshade = new TGraph(2*n);

   for (i=0;i<n;i++) {

      grshade->SetPoint(i,x[i],ymax[i]);

      grshade->SetPoint(n+i,x[n-i-1],ymin[n-i-1]);

   }

   grshade->SetFillStyle(3013);

   grshade->SetFillColor(16);

   grshade->Draw("f");

   grmin->Draw("l");

   grmax->Draw("l");

   gr->SetLineWidth(4);

   gr->SetMarkerColor(4);

   gr->SetMarkerStyle(21);

   gr->Draw("CP");

}

Int_t
int Int_t
Definition: RtypesCore.h:41

Double_t
double Double_t
Definition: RtypesCore.h:55

ymin
float ymin
Definition: THbookFile.cxx:93

ymax
float ymax
Definition: THbookFile.cxx:93

sin
double sin(double)

TAttFill::SetFillColor
virtual void SetFillColor(Color_t fcolor)
Set the fill area color.
Definition: TAttFill.h:37

TAttFill::SetFillStyle
virtual void SetFillStyle(Style_t fstyle)
Set the fill area style.
Definition: TAttFill.h:39

TAttLine::SetLineWidth
virtual void SetLineWidth(Width_t lwidth)
Set the line width.
Definition: TAttLine.h:43

TAttMarker::SetMarkerColor
virtual void SetMarkerColor(Color_t mcolor=1)
Set the marker color.
Definition: TAttMarker.h:38

TAttMarker::SetMarkerStyle
virtual void SetMarkerStyle(Style_t mstyle=1)
Set the marker style.
Definition: TAttMarker.h:40

TCanvas
The Canvas class.
Definition: TCanvas.h:31

TGraph
A Graph is a graphics object made of two arrays X and Y with npoints each.
Definition: TGraph.h:41

TGraph::SetPoint
virtual void SetPoint(Int_t i, Double_t x, Double_t y)
Set x and y values for point number i.
Definition: TGraph.cxx:2198

TGraph::Draw
virtual void Draw(Option_t *chopt="")
Draw this graph with its current attributes.
Definition: TGraph.cxx:747

c1
return c1
Definition: legend1.C:41

y
Double_t y[n]
Definition: legend1.C:17

x
Double_t x[n]
Definition: legend1.C:17

n
const Int_t n
Definition: legend1.C:16

gr
TGraphErrors * gr
Definition: legend1.C:25