Gnuplot for plotting graphs

This post shows you how to plot using gnuplot for producing/creating graphs. Usually these graphs are used to publish in papers like journals/conferences.

Gnuplot tutorial on handling data files.

Gnuplot 

Installation of gnuplot 

$] sudo apt install gnuplot

Two files for plotting a graph in gnuplot 

File1: mydata.txt 

1 34.5 45 12000

2 36.4 34 24000

3 38.7 22 34000

4 32.3 18 43000

5 41.5 24 23456

6 35.6 36 12345

7 24.5 67 67987

8 56.7 54 45678

9 62.3 27 32123

10 65.4 33 8999

File2: mygnucode.plt

set terminal pdf

set output "pradeep.pdf"

set title "Drivers Data"

set xlabel "Number of Days"

set ylabel "Drivers Info"

plot "mydata.txt" using 1:2 with impulse title "Speed km/hr" lw 

2,"mydata.txt" using 1:3 with points title "Age" lw 2

set terminal png size 600,400

set output "salary.png"

set title "Drivers Data"

set xlabel "Number of Driver"

set ylabel "Drivers Salary"

plot "mydata.txt" using 1:4 with linespoints title "Salary in Rs." 

lw 2, 20000 title "Minimum Salary"

Please see the following video for step by step instructions. 

Gnuplot Tutorial - Research

Gnuplot video is successful to plot 2d graphs. 

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https://www.youtube.com/tspradeepkumar 

T S Pradeep Kumar