Re: [Gnuplot-info] plot with table

[Ethan A M. <EAM...@gm...>]

On Wednesday, 22 August 2018 00:56:20 Patrick Dupre wrote:
> 
> ===========================================================================
> Patrick DUPRÉ | | email: pd...@gm...
> Laboratoire de Physico-Chimie de l'Atmosphère | |
> Université du Littoral-Côte d'Opale | |
> Tel. (33)-(0)3 28 23 76 12 | | Fax: 03 28 65 82 44
> 189A, avenue Maurice Schumann | | 59140 Dunkerque, France
> ===========================================================================
>  
>  
> Sent: Wednesday, August 22, 2018 at 12:46 AM
> From: "Ethan Merritt" <eam...@gm...>
> To: "Patrick Dupre" <pd...@gm...>
> Cc: gnuplot <gnu...@li...>
> Subject: Re: [Gnuplot-info] plot with table
> On Tue, Aug 21, 2018 at 3:33 PM, Patrick Dupre <pd...@gm...> wrote:
> Hello,
> 
> Something is escaping to me.
> I tried:
> 
> set table "out.asc"
> plot $DATA u (x=$1):(ampl*d_Lor_D (x-x0, W)+offset) with table
> unset table
> 
> 
> But the number of samples is ignored
>  
> That is because there is no sampling. You have asked it to print
> one line of output for each line in $DATA. The first value on that line is
> echoed from $DATA, the second value is a function of the first.
>  
> while
> plot $DATA u 1:2
> replot ampl*d_Lor_D (x-x0, W)+offset
> has the right number of sample
>  
> Here you generate two plots.
> The first one has one line for each line in $DATA.
> The second one samples a function, where the number of samples
> is controlled by "set sample".
> There is no intrinsic relationship between the x values in the first plot
> and those in the second.
>  
> How can I fix the issue
>  
>  
> It is not clear what you are aiming for.
> Are you trying to fit and re-sample the values held in $DATA?
> That would require a rather different set of commands, either
> based on "fit" or "smooth".
>  
>   Ethan
>  
>  
> Actually, I fit $DATA, and I plot the fit with replot ampl*d_Lor_D (x-x0, W)+offset
> while I would like also to get the same data in a file

Sorry, I still do not understand what you are trying to do.
Why are you using "replot" rather than "plot"?
What content, exactly, do you want to have in the output file?

	Ethan