# Calculate the 1-d spring pendulum energy and trajectory (plot)
# Isaac Lenton
# August 2017

set xrange [0:10]
set yrange [0:0.5]
set xlabel "Time (s)"
set ylabel "Energy (J)"

plot "output.dat" u 1:4 w l title "Kinetic", \
    "output.dat" u 1:5 w l title "Potential"