[ROOT] Bug with fitted functions attached to histograms ?

From: Patois Yannick (patois@ganil.fr)
Date: Sun Jun 10 2001 - 21:18:29 MEST


Hi again.

Sorry, this 'bug repport' is very vague...

Some scripts I use are doing several fits on serveral histograms, and
with version 3.00.06 I had no problems.

When I run them under 3.01.05, some fitted functions seems to 'jump'
from one histo to the other. At the end, when I display the histograms,
I found several copies of one fit function 'fitting' several histograms,
that *were fitted correctly with a function stored on the histo*, of
course the function that replace the right fits doesnt correspond to
what is expected.

I'm sorry if I cant give more precision: all that comes out from quite
complex scripts and I didnt took the time to dig into it and find *how*
it happends. The only thing I can say is that 'magically' when I do a
Fit one one histo, another function, on another histogram 'copy' the
fitted values. Yes, functions have same name.

If there was some obvious change made inthe way histos stores theyr
fitting functions between 3.00.06 and 3.01.05 maybe the one who wrote it
will find out why... I may come out with a little script showing this,
but probably not before a few weeks...

Thanx,

	Yannick



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