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

Question

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?

Comments

Datafile for gnupot looks like this
# X      Y
10000.0 0.01
100000.0 0.05
1000000.0 0.45

So you can pick line by line from each file i.e. file containing X and Y and merge them then use gnupot. Let me know if you need some help in that...

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

Answer 1

Traditionally, gnuplot data files contain multiple columns, e.g.:

# x y
  1 2
  5 10
  6 12

gnuplot does not support two single-column files, so I think you need to merge 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.

Answer 2

You have to first merge file1 and file2 like this:

paste file1 file2 > merged

then you can plot what you want in gnuplot:

plot "merged" 1:2