Hi
I am trying to rebin a histogram in python following way:
h=r.TH1F(‘’,‘’,8,0,8)
for i in range(9) :
… h.SetBinContent(i+1,i)
…
h.Draw()
Info in TCanvas::MakeDefCanvas: created default TCanvas with name c1
x=numpy.array([0,1,2,3,4,8])
h1=h.Rebin(5,‘’,x)
h1.Draw()
Error in TGaxis::PaintAxis: length of axis is 0
h1.GetEntries()
9.0
h.GetEntries()
9.0
h.Integral()
28.0
h1.Integral()
0.0
What I understand Rebin() function will return the pointer of modified binsize histogram with different name, but why the integral value is zero & also why getting error while drawing? Can anyone please make it clear?
Thanks