# 20x30_commands.txt
#
# Usage:
#  gnuplot < 20x30_commands.txt
#
unset key
set term png
set output '20x30.png'
set size ratio -1
set xlabel '<--- J --->'
set ylabel '<--- I --->'
set title '101 nonzeros for "20x30"'
set timestamp
plot [x=0:29] [y=19:0] '20x30_data.txt' with points pt 5