#include <TH2F.h>
#include <TCanvas.h>

void labelTest()
{
  TH2F *h2=new TH2F("h2","",2,0,1,2,0,1);

  h2->Fill("blahblah x1","blahblah y1",1);
  h2->Fill("blahblah x2","blahblah y2",2);

  TCanvas *c=new TCanvas();
  h2->Draw("COL");
  h2->GetXaxis()->LabelsOption("v");
  h2->GetYaxis()->LabelsOption("v");
}