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Re: Simultaneous fitting in IDL [message #66484 is a reply to message #66384]

Wed, 20 May 2009 07:05

Gianluca Li Causi
Messages: 21
Registered: August 2005

Junior Member

Dear Allan,
thanks a lot for your test procedure that I've improved to check
what's happening with my data: YOU'RE RIGHT and I WAS WRONG !!

In fact, the test procedure clearly shows that in my limiting
hypothesis of two functions depending on complementary parameters the
fit is good without the need to modify the data errors as I did: I've
realized that I was fitting my data with an incorrect function and I
was forcing the fit.
In fact I've realized that my observable, measured in different times,
had changed with time, while I assumed it to be static during all the
measurements; so that my data couldn't be fitted by a single set of
parameters, but I must divide the data in bunches of smaller time
intervals.

Thanks a lot for your help, which better clarify to me the data
fitting task.
Best regards
Gianluca

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		Simultaneous fitting in IDL By: Gianluca Li Causi on Thu, 14 May 2009 09:54
		Re: Simultaneous fitting in IDL By: Gianluca Li Causi on Wed, 20 May 2009 07:05

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