Re: [Gnuplot-info] [Non linear regression] How to store the standard uncertainty of a parameter in a variable ?

[Thomas S. <t.s...@fz...>]

David Kremer <david.kremer.dk <at> gmail.com> writes:

> ...
> When you do a fit, if everything goes fine, you should end up with some
> lines like :
> ...
> 
>  Final set of parameters            Asymptotic Standard Error
>  =======================            ==========================
> 
>  BG              = 0.141662         +/- 0.002977     (2.101%)
>
> My question would be, how to catch the number the asymptotic standard
> error (that is to say the number 0.002977) in a var, to be able then to
> print this number out.

"set fit errorvariables"

then do the fit and look for "<variablename>_err" in

"show variables all"

(here: BG_err)

and print the variable.