How to make of use of GNUPLOT in Linux for plotting graphs by taking inputs from files?

[Norah Jones]

Hi,

How to make of use of GNUPLOT in Linux for plotting graphs by taking input from files? Data in one file represents X-axis and other file data represents Y-axis. Can anyone help me out?

Thanks,
Norah Jones

[Frank Murphy]

On Thu, 6 Feb 2014 11:23:32 +0000
Norah Jones  wrote:
> lotting graphs by taking input from files?

Maybe use Google?
http://www.cs.hmc.edu/~vrable/gnuplot/using-gnuplot.html

[Kalpa Welivitigoda]

On Thu, Feb 6, 2014 at 5:11 PM, Frank Murphy  wrote:
> On Thu, 6 Feb 2014 11:23:32 +0000
> Norah Jones  wrote:
> > lotting graphs by taking input from files?
>
> Maybe use Google?
> http://www.cs.hmc.edu/~vrable/gnuplot/using-gnuplot.html

http://lowrank.net/gnuplot/index-e.html is also a good source I use to
refer to get help with gnuplot. Hope that will help.
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[William Oliver]

On Thu, 6 Feb 2014, Kalpa Welivitigoda wrote:
> On Thu, Feb 6, 2014 at 5:11 PM, Frank Murphy  wrote:
>       On Thu, 6 Feb 2014 11:23:32 +0000
>       Norah Jones  wrote:
>   > lotting graphs by taking input from files?
>
> Maybe use Google?
> http://www.cs.hmc.edu/~vrable/gnuplot/using-gnuplot.html
>
> http://lowrank.net/gnuplot/index-e.html is also a good source I use to refer to get help with gnuplot. Hope that will help.
>  
> [snip]

Actually, I'm not sure that will help her do what she wants to do.
Traditionally, gnuplot data files contain multiple columns, e.g.:

# x y
   1 2
   5 10
   6 12

rather than two single-column files, and I think the latter is what she
wants.  I don't think that gnuplot supports that (though I could be
wrong).  Thus, I think she needs to merge her two files, e.g.

plot "< join file1.dat file2.dat"

if I remember right....

As an aside, if you are going to be doing any data manipulation or
regression or such, I'd consider moving to R.   I have a lot of respect
for gnuplot, and I used it a lot as a grad student, but just about
everything I want to do I can do in R and make it look better.  The
learning curve is a bit nontrivial, but I've found it worth it.

billo

[Frédéric Bron]

> How to make of use of GNUPLOT in Linux for plotting graphs by taking input from files? Data in one file represents X-axis and other file data represents Y-axis. Can anyone help me out?

This is off topic for this list but:
it is not possible. You have first to merge file1 and file2 like this:
paste file1 file2 > merged
then you can plot what you want in gnuplot:
plot "merged" 1:2
Frédéric