gnuplot-info

[Gnuplot-info] Excluding ranges from fit

[Miguel Rubio-R. <mru...@gm...>]

Hi all,

Can I define multiple ranges for the fit function? That is, if my xrange is
[1:100] and I want to fit [1:10] and [20:100] but exclude [10:20].

Thanks

Miguel

Re: [Gnuplot-info] Excluding ranges from fit

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

Miguel Rubio-Roy <mrubioroy <at> gmail.com> writes:

> 
> Hi all,
> 
> Can I define multiple ranges for the fit function? That is, if my xrange is
> [1:100] and I want to fit [1:10] and [20:100] but exclude [10:20].
> 
> Thanks
> 
> Miguel

you may exclude data from the fit with the 'using' option:

fit [1:100] f(x) 'datafilename' using ($1>10&&$1<20?0/0:$1):2 via ...

Re: [Gnuplot-info] Excluding ranges from fit

[Miguel Rubio-R. <mru...@gm...>]

>
> Can I define multiple ranges for the fit function? That is, if my xrange is
>> [1:100] and I want to fit [1:10] and [20:100] but exclude [10:20].
>
>
> you may exclude data from the fit with the 'using' option:
>
> fit [1:100] f(x) 'datafilename' using ($1>10&&$1<20?0/0:$1):2 via ...
>

Great! Thanks a lot. Maybe a reference to this use of using + ternary
operator could be placed in the "range" documentation, as it probably is
the first place people will look for when trying to do this. That's what I
did, at least...

Thanks again

Miguel

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