set style line 100 lw 0.05 lc rgb "#003366"
set pm3d depthorder hidden3d ls 100
set palette rgb 9,9,2
set parametric
set samples 36
set isosamples 20,36
set ticslevel 0
set xtics 0.5
set ytics 0.5
set view 70,170
set urange [0:pi]
set vrange [0:2*pi]
splot sin(u)*cos(v),sin(u)*sin(v),cos(u) w pm3d
pause 3
set term pngcairo size 480,480
set out "sphere.png"
replot