GNUPlot
Get common statistics from a list of numbers
Let's say we have a list of numbers and we want to find things like the mean, median, standard deviation, range, deviation, sum, etc.
Given a set of number: {7.5, 8, 8.75, 8.25, 10.5, 8.25, 8.5, 10.5, 8, 8.5, 7, 9.5}. We can calculate a variety of statistical outputs using gnuplot:
echo "7.5\n8\n8.75\8.25\n10.5\n8.25\n8.5\n10.5\n8\n8.5\7\9.5" | gnuplot -e
'stats "-"'
I put this into a shell function:
plot () {
cat ${1} | gnuplot -e 'stats "-"'
}
So I can just put the contents into a text file and get the stats via plot
filename.txt
Graphing a CSV File.
Plotting a two variable line graph on the terminal:
Example file saved to /tmp/data.csv
1,100
2,60
3,70
4,80
5,40
And the commands for gnuplot:
gnuplot
gnulplot> set datafile separator ','
gnuplot> plot "/tmp/data.txt` using 1:2 with lines
Display a Graph in the Terminal
gnuplot> set terminal dumb