Re: [ROOT] Fit status=Reset

From: Rene Brun (Rene.Brun@cern.ch)
Date: Wed Dec 17 2003 - 17:10:36 MET


Hi Martina,

Thanks for providing a simple example to investigate this problem.
There was a problem in TTree::UnbinnedFit in case one of the input
parameters had a negative value.
This problem has now been fixed in the released version 3.10/02 available
on the web site, including AFS files.
We will make an announcement of this version tomorrow with the Release Notes.

In your example, as a workaround if you cannot upgrade to the new version,
you can give a positive value for your input parameters. Because the function to
fit is very simple, TMinuit will be able to find its way.

Rene Brun


Schaefer Martina wrote:
> 
> Hi,
> 
> sometimes ago I asked a question for a fitproblem where minuit tells me
> "STATUS=RESET".
> Can anybody help me and explain me what this means or do you know who I
> could ask?
> 
> Thanks a lot,
> 
>         Martina
> 
> --
> Martina Schaefer
> 
> LPSC(ISN) Laboratoire de Physique Subatomique et de Cosmologie
> 53 avenue des Martyrs
> 38026 Grenoble cedex
> France
> (+33) 4-76-28-41-02
> schaefer@lpsc.in2p3.fr



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