# pcommands.txt
# usage: gnuplot < p_commands.txt
#
set term png
set size ratio -1
set output "p_contours.png"
unset surface
set view map
set contour
set cntrparam levels 10
set xlabel "<--X-->"
set ylabel "<--Y-->"
set title "Pressure contours"
set timestamp
splot "p_data.txt" with linesp