# vortex_commands.txt
#
# Usage:
#  gnuplot < vortex_commands.txt
#
set term png
set output 'vortex_subplots.png'
set multiplot layout 1,2 title "Vortex pressure and velocity"
#
set xlabel '<--- X --->'
set ylabel '<--- Y --->'
set title 'Pressure'
set grid
set timestamp
unset key
unset surface
set contour base
set pm3d
set size ratio -1
unset tics
set view map scale 0.90
splot 'vortex_pressure_data.txt' with pm3d
#
set xlabel "<--- X --->"
set ylabel "<--- Y --->"
set title "Velocity"
unset key
set grid
set size ratio -1
plot "vortex_velocity_data.txt" using 1:2:5:6 with vectors \
  head filled lt 2 linecolor rgb "blue"
#
unset multiplot
quit