# draw frame diff graph #set terminal svg size 800,600 dynamic; #set output "graph.svg"; plot 'data.txt' using 2 with lines lt rgb "#204a87" title "average", \ 'data.txt' using 3 with lines lt rgb "#a40000" title "diff", \ 'data.txt' using 4 with lines lt rgb "#4e9a06" title "rise";