Logos in plots with vector output as a style

[vcroft]

Howdy folks. I’ve been trying to create a series of plots for an analysis and would like to include a logo in the corner of each plot (usually TH1s on a standard TCanvas).

@couet I found the tutorial here and hundreds of other root mailing list posts on the topic but couldn’t find a good answer.

1. what’s the recommended way to add logos to a plot? - is the clunky pad interface the only way?
2. How do I output said plots as .pdfs ? - I get a Warning in <TASImage::Paint>: PDF not implemented yet error, same as those mailing list posts from 2007.
3. Is there a way of setting this as default like a style, such that I call a function set_logo and my current pad gets a logo and fonts etc are set? - currently I have to do this 10 times for the 6 sub plots on a canvas and 4 on the next.

---

Please read tips for efficient and successful posting and posting code

ROOT Version: Not Provided
Platform: Not Provided
Compiler: Not Provided

---

[couet]

I have this example.

void DrawLogo(){

   TImage *img = TImage::Open("CernLogo.gif");

   if (!img) {
      printf("Could not create an image... exit\n");
      return;
   }
   TPad *l = new TPad("l","l",0.,0.9,0.1,1.);
   l->Draw();
   l->cd();
   img->Draw();
}

void logo()
{
   TCanvas *c6 = new TCanvas("c6", "S*#sigma",320,22,691,653);
   gStyle->SetOptStat(0);
   c6->Range(-0.3373713,-2.125,3.036341,9.125);
   c6->SetFillColor(0);
   c6->SetBorderMode(0);
   c6->SetBorderSize(2);
   c6->SetLogx();
   c6->SetFrameBorderMode(0);
   c6->SetFrameBorderMode(0);

   Float_t Y[4]={4.6,2.1,3.9,1.0  };
   Float_t X[4]={150.,26.,9.8,6.6};
   Float_t Yerr[4]={0.24,0.746,0.5809,1.29};
   Float_t Xerr[4]={0.0};

   TGraphErrors *hm3sta = new TGraphErrors(4,X,Y,Xerr,Yerr);
   gStyle -> SetCanvasBorderMode(0);
   gROOT->SetStyle("Plain");
   gStyle->SetOptStat(0);

   TH2F *h2 = new TH2F("h2","",1000,0.,1000.,900,-1.,8.);
   h2->GetXaxis()->SetMoreLogLabels();
   h2->GetXaxis()->SetNdivisions(-503);
   h2->GetXaxis()->SetTitleOffset(1.1);
   h2->GetYaxis()->CenterTitle(true);
   h2->GetYaxis()->SetNdivisions(40603);

   h2->GetXaxis()->SetTitle("X-axis");
   h2->GetYaxis()->SetTitle("Y-axis");
   h2->GetXaxis()->SetTitleOffset(1.1);
   h2->GetYaxis()->SetTitleOffset(1.2);
   h2->Draw();

   hm3sta->SetMarkerStyle(25);
   hm3sta->SetMarkerColor(2);
   hm3sta->SetLineColor(6);
   hm3sta->SetMarkerSize(2.0);
   hm3sta->Draw("P");
   DrawLogo();
}

[vcroft]

Hi @couet yup this is basically the setup I have. if you try to save this canvas as a pdf I would assume you get the error I posted above.

Saving a canvas as a PDF is essential to this project.

[couet]

@vcroft

Saving a canvas as a PDF is essential to this project.

PDF does not have the binary images implemented you can save to PS only.

[vcroft]

@couet

void DrawLogo(){ TImage *img = TImage::Open(“CernLogo.gif”); if (!img) { printf(“Could not create an image… exit\n”); return; } TPad *l = new TPad(“l”,“l”,0.,0.9,0.1,1.); l->Draw(); l->cd(); img->Draw();

Ah this works, thanks!