# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 500, 350 
# set output 'surface2.3.png'
set dummy u,v
set key bmargin center horizontal Right noreverse enhanced autotitles nobox
set parametric
set view 45, 50, 1, 1.4
set isosamples 50, 10
set hidden3d back offset 1 trianglepattern 3 undefined 1 altdiagonal bentover
set ztics -1.00000,0.25,1.00000 norangelimit
set title "Parametric Sphere, enlarged z axis" 
set urange [ -1.57080 : 1.57080 ] noreverse nowriteback
set vrange [ 0.00000 : 6.28319 ] noreverse nowriteback
splot cos(u)*cos(v),cos(u)*sin(v),sin(u)