[ROOT] Histogram fitting and errors

From: Ludyvine Morand (lmorand@cea.fr)
Date: Wed Jun 25 2003 - 18:29:16 MEST


Dear ROOTers,

I am doing histograms fitting with the Fit() method from TH1 class. As 
far as I understand the error used to do the fitting is the statistical 
error sqrt(N). True ?
Actually my histograms were filled with events weighted (y=N*w), so I 
want the Fit() method to use another error than sqrt(y) that I believe 
it is using. Does anybody know how I should do this ?

Thanks !
Ludyvine.

-- 
Ludyvine Morand
DAPNIA/SPhN - Bat 703 Piece 156 - Orme des Merisiers
CEA Saclay - 91191 Gif-sur-Yvette cedex - FRANCE       
Tel : (33-1)01 69 08 87 19                            



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