Groups > comp.graphics.apps.gnuplot > #3236

Re: Obtain data points of a line from gnuplot

From	Jörg Buchholz <bookwood4news@freenet.de>
Newsgroups	comp.graphics.apps.gnuplot
Subject	Re: Obtain data points of a line from gnuplot
Date	2016-02-15 20:00 +0100
Organization	A noiseless patient Spider
Message-ID	<n9t73d$tn4$1@dont-email.me> (permalink)
References	<65879cc4-a1af-4e93-9850-a2d045a8ee89@googlegroups.com>

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On 15.02.2016 18:10, jamie.unix@gmail.com wrote:
> Hi all,
>
> I have been stumped with this for quite a while now. I remember that I could do this with gnuplot, but have been struggling to find the correct documentation.
>
> Consider I have a data file with a few x and y coordinates, lets say
>
> 0 0
> 10 10
> 20 20
> 30 30
>
> and if I call gnuplot to plot this file as follows:
>
> plot 'input.txt' using 1:2 with l ls 1
>
> The generated graph is a straight line with a certain slope. Is it possible to obtain the coordinates of the line as shown in gnuplot's output, with a certain resolution?
>
> For example, the expected result would be something like
>
> 0 0
> 1 1
> 2 2
> 3 3 ... and so forth.

plot 'input.txt' u ($1/10):($2/10) w l ls 1

Jörg

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Obtain data points of a line from gnuplot jamie.unix@gmail.com - 2016-02-15 09:10 -0800
  Re: Obtain data points of a line from gnuplot Jörg Buchholz <bookwood4news@freenet.de> - 2016-02-15 20:00 +0100
  Re: Obtain data points of a line from gnuplot Ethan A Merritt <EAMerritt@gmail.com> - 2016-02-15 21:56 -0800

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