reset
set terminal postscript eps enhanced font "Arial-narrow" 24
set output "fig_gpl_every.eps"
set size ratio 1.0

set xrange [0:10]
set yrange [0:10]
set xtics 0,1,10
set ytics 0,1,10
set xlabel "Name of x-axis"
set ylabel "Name of y-axis"
set grid xtics ytics
set key bottom right width -2 samplen 1

plot \
"-" every 2::0 with points pt 6 ps 1.5 title "point incr 2", \
"-" every ::2 with points pt 8 ps 1.5 title "start point 2", \
"-" every ::3::5 with points pt 4 ps 1.5 title "start/end 3/5"
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
e
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
e
1 3
2 4
3 5
4 6
5 7
6 8
7 9
e