set output 'rope_30.0.ps' 
set term postscript color enhanced  
set grid 
set key top right 
set xlabel 'Horizontal position (meters) ' 
set ylabel 'Vertical position (meters) ' 
set title 'Pictures of the rope'
set label 1 'Time 30.0 seconds' at 4,0.7 font 'Helvetica,24' 
plot [-30:30][-1:1]  './rope_30.0.dat' index 0 using 2:3 with linespoints lc -1 pt 6 ps 0.2 lw 2 t ''   ,    './rope_30.0.dat' index 1 using 2:3 with points lc 1 pt 3 ps 1.5 lw 3 t ''  
set output 
quit 
