set term png
set output "fd_predator_prey.png"
set grid
set style data lines
set timestamp
set key
set xlabel "<---T--->"
set ylabel "<---Population--->"
set title "Predator/Prey Populations"
plot "fd_predator_prey_data.txt" using 1:2 with lines lw 3 title "prey", \
"" using 1:3 with lines lw 3 title "predator"
quit