[ROOT] histogram binning

From: jrieger (jrieger@indiana.edu)
Date: Fri Aug 04 2000 - 22:16:28 MEST


Hey all,
	I am a novice root user, and am struggling to make a histogram
with variable bins.  What I am looking for is a histogram with range from
0-20, with bins of 1 from 1-8 and bins of 4 from 12-20.  This is the code
that I tried:

  Float_t xbins[12] = {0. 1. 2. 3. 4. 5. 6. 7. 8. 12. 16. 20.};
  EFar->GetXaxis()->Set(11,xbins);

And I recieved the following error message when I tried to fill and draw
the histogram:

Error in <TAxis::TAxis::Set>: bins must be in increasing order
Error in <TCanvas::Range>: illegal world coordinates range: x1=22.680000,
y1=-0.038994, x2=-2.520000, y2=0.350950

Any ideas on what to do with this problem.  I would appreciate the help.
-Jason



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