# Render 2d points with gnuplot to PNG

One of the easiest way to render some points with gnuplot is:

1. write to file (eg points.txt) the points you want to render in simple text format, one line per point (x,y pairs, no tabs no commas etc)
2. create a script with the code shown below (eg graph.gnuplot)
3. run the script with gnuplot (eg gnuplot graph.gnuplot)
4. Open the png file with a program of your choice.

point file sample:

 10 10 20 20 30 30 

script sample

 set terminal png set size ratio -1 set output "./graph.png" plot \ "points1.txt" notitle with points pointsize 0.5 linecolor rgb "green",\ "points2.txt" notitle with points pointsize 0.5 linecolor rgb "yellow",\ "points3.txt" notitle with points pointsize 0.5 linecolor rgb "black" 

execution example:

 gnuplot graph.gnuplot