In trying to create a 3D Histogram from a saved ntuple, I've done the
following but it crashes:
{
f1 = new TFile("haas.root");
h3 = new TH3F("h3" , "3-D Histogram" ,250,0,25,250,0,25,250,0,50);
ntuple->EventLoop(3,h3);
}
What am I doing wrong?
Thanks in adavnce, Andy.