# set terminal png transparent nocrop enhanced font arial 8 size 420,320 
# set output 'surface2.5.png'
set dummy u,v
set key right below Right noreverse noinvert enhanced box linetype -2 linewidth 1.000 samplen 4 spacing 1 width 0 height 0 autotitles
set parametric
set view 45, 50, 0.7, 1.4
set isosamples 50, 10
set hidden3d offset 1 trianglepattern 3 undefined 1 altdiagonal bentover
set ticslevel 0
set title "Parametric Hexagon" 0.000000,0.000000  font ""
set urange [ -1.30000 : 1.30000 ] noreverse nowriteback
set vrange [ 0.00000 : 6.28319 ] noreverse nowriteback
set zrange [ * : * ] noreverse nowriteback  # (currently [-1.00000:1.00000] )
splot cos(v)**3*cos(u)**3,sin(v)**3*cos(u)**3,sin(u)**3