Re: [ROOT] Fitting few poynomials in the ranges

From: Rene Brun (Rene.Brun@cern.ch)
Date: Tue Apr 20 2004 - 18:13:05 MEST 

Tomasz,

The SMOOTH command in PAW was smoothing histograms. The equivalent function
in ROOT is provided by TH1::Smooth

You can also use cubic and quintic splines. See classes TSpline3, TSline5
see $ROOTSYS/tutorials/splines.C

Rene Brun

Tomasz Bold wrote:
> 
> Dear *,
>         I am looking for replacement of smooth functionality present in
> PAW. I figured out that fiting the plynomials of
> degree, let's say 2 to the histogram in consecutive ranges may be OK.
> Saving fit parameters as a definition of soothed function would work for
> me.
> 
> Not surprisingly the pieces does not comprise continous curve.
> 
> Any idea how to deal with the problem. Is my aproach correct?
> 
> Is there methods to fit Csplines in ROOT.
> 
> Best regards,
>         Tomasz
> 
> --------------------------------------
> Tomasz Bold
> mail me:
> bold@ftj.agh.edu.pl,
> Tomasz.Bold@cern.ch
> Tomasz.Bold@desy.de
> or call:
> +48 12 617 4729 (AGH)
> +48 12 662 8023 (IFJ)
> -------------------------------------

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