# 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=1:30] [y=20:1] "20x30_data.txt" with points pt 5