Put a watermark on the Canvas

hkkang · October 13, 2008, 11:18am

Hi,

I’ve drawn a histogram on the canvas and wrote the title for each axis.
After that, I want to add a watermark like “preliminary” on the plot.

How can I do for that? pleas let me know.

Thanks in advance

couet · October 13, 2008, 11:57am

{
   const Int_t n = 10;
   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);
   }
   gr = new TGraph(n,x,y);
   gr->SetMarkerStyle(20);
   gr->SetMarkerColor(kBlue);
   gr->Draw("AP");

   tex = new TLatex(0.,3.,"Very Preliminary");
   tex->SetTextColor(17);
   tex->SetTextSize(0.1991525);
   tex->SetTextAngle(26.15998);
   tex->SetLineWidth(2);
   tex->Draw();
   
   gr->Draw("LP");
   gPad->RedrawAxis();
}