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Obtain data points of a line from gnuplot

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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.

Appreciate your help.
Jamie.

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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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