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From: =?ISO-8859-1?Q?Hans-Bernhard_Br=F6ker?= <HBBroeker@t-online.de>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: Multible Fits using the same fit function lead to ?false? results.
Date: Thu, 19 May 2011 01:56:38 +0200
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On 18.05.2011 00:04, Oliver Götze wrote:
> Hi
> i just noticed that using a gnuplot script like this:
[...]
> on a table.dat file like this (just an example):
[...]
> leads to false results,

It's really hard to help you based on such a vague description.  What 
exactly do you think is "wrong" about those results?

> i have to reset (or set to zero) die
> coefficients a0, a1, a2 after/before every fit by placing
> a0=0
> a1=0
> a2=0

Don't do that.  Fit parameters should never be zero; particularly not 
the start-up values.

> If i do not do this the last values for the coefficients are taken
> into the next fit and this is influencing the results.

So what?