Xaxis labels both on top and bottom of pad

ROOT
1

Hi,

I would like to place additional labels on the top of my pad showing a histogram.

That is, I have a histogram with my xaxis and binlabels at the bottom of the pad as normal, but I would like to place binlabels also on the top of the plot.

I have not found a way to do this, as TGaxis does not have a SetBinLabel option?

Thanks a lot,
Maiken

2

A bit tricky, but here it is:

void hlabels4()
{
   TCanvas *c1 = new TCanvas("c1","transparent pad",200,10,700,500);
   TPad *pad1 = new TPad("pad1","",0,0,1,1);
   TPad *pad2 = new TPad("pad2","",0,0,1,1);
   pad2->SetFillStyle(0);

   Int_t i;
   const Int_t nx = 10;
   char *people1[nx] = {"Jean","Pierre","Marie","Odile","Sebastien", "Fons","Rene","Nicolas","Xavier","Greg"};
   char *people2[nx] = {"Bjarne","Anton","Otto","Eddy","Peter","Pasha","Philippe","Suzanne","Jeff","Valery"};
   TH1F *h1 = new TH1F("h1","  ",3,0,3);

   TH1F *h2 = new TH1F("h2","h2",nx,0,3);
   TAxis *ax = h2->GetXaxis();
   TAxis *ay = h2->GetYaxis();
   for (i=0;i<10;i++) ax->SetBinLabel(i+1,people2[i]);
   ay->SetLabelSize(0.);

   for (i=0;i<5000;i++) {
      Int_t r = gRandom->Rndm()*10;
      h1->Fill(people1[r],1);
   }
   h1->LabelsDeflate();

   pad1->Draw();
   pad1->cd();
   h2->Draw("X+");

   pad2->Draw();
   pad2->cd();
   h1->Draw();
}
3

Thank you ever so much! That worked perfectly.

Maiken