[ROOT] Suppressing the Fit Statistics

From: Steffen Grohmann (Steffen.Grohmann@cern.ch)
Date: Fri Oct 04 2002 - 17:39:07 MEST


Hello,

I have some problems adding a fit to data in a graph.

The first problem occurs with SetOptFit. If I do not declare:
  gStyle->SetOptFit(0011);
the program calculates the coefficents correctly, but doesn't
display the fit on the graph and ends with:
   *** Break *** segmentation violation
The same error occurs when I declare:

  gStyle->SetOptFit(0000);
There has to be at least one "1" among the 4 numbers. With this declaration
the fit together with statistics box is automatically drawn in my diagram.

Now I want to get rid of the statistics box using SetOptStat and declare
e.g.:
  gStyle->SetOptFit(0011);
  gStyle->SetOptStat(0);
This, however, doesn't prevent ROOT from drawing the statistics box. The
interactive Delete option doesn't seem to react either. Even if I write:
  gr->Fit("pol3","0");
in order not to plot the fit, the statistics box is still drawn.

I tried to use
   TH1::SetStats(kFALSE);
at the beginning of the macro, but then the error message appears again.
 *** Break *** segmentation violation

Cold you please suggest a way how to prevent ROOT from drawing the
statistics box?
(I am working via Exeed with the Linux version.)

Thanks and best regards,
Steffen



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