set grid
set autoscale xfixmin
set terminal postscript enhanced
set output "geodesics_r.ps"
set ylabel "Distance (Mpc)"
set xlabel "Local Time (Mpc)"
set yrange [0:*]
plot 'graph.dat' using 1:3 w l title 'Galaxy emitting trajectory'
set style line 2
set terminal postscript enhanced
set output "geodesics_r.ps"
replot 'graph.dat' using 1:2 w l title 'Light ray trajectory'
set terminal postscript enhanced
set output "geodesics_theta.ps"
set label "Local Time (Mpc)"
set ylabel "Theta in radian"
set autoscale y
plot 'graph.dat' using 1:4 w l title '{/Symbol q}'
set terminal postscript enhanced
set output "geodesics_phi.ps"
set label "Local Time (Mpc)"
set ylabel "Phi in radian"
plot 'graph.dat' using 1:6 w l title '{/Symbol f}'