# ell_commands.txt
#
# Usage:
#  gnuplot < ell_commands.txt
#
set term png
set output 'ell.png'
set xlabel '<--- X --->'
set ylabel '<--- Y --->'
set title 'ell'
set grid
set key off
set size ratio -1
set style data lines
plot 'ell_grid.txt' using 1:2 with points lt 3 pt 3,\
     'ell_vertex.txt' using 1:2 lw 3 linecolor rgb 'black'
quit