set parametric
set pm3d explicit
set palette rgb 5,9,9
unset colorbox
set view 15,15,1.4,1.4
unset border
unset xtics
unset ytics
unset ztics
unset key
set term png transparent size 320,240 xffffff
set out "golfer.png"
set multiplot
set samples 30
set isosamples 30,30
set urange[0:568]
set vrange[0:716]
splot u,v,u*v w pm3d
splot "golfer.dat" using 1:2:($1*$2) w lines lw 2 lt 31
unset multiplot
!display golfer.png