# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 500, 350 
# set output 'random.3.png'
set dummy u,v
set format x "%3.2f"
set format y "%3.2f"
set format z "%3.2f"
unset key
set parametric
set view 68, 28, 1, 1
set samples 50, 50
set isosamples 30, 30
set contour base
unset clabel
set hidden3d back offset 1 trianglepattern 3 undefined 1 altdiagonal bentover
set cntrparam levels discrete 0.1
set style function dots
set ticslevel 0
set ztics 0.00000,0.05 norangelimit
set title "50 random samples from a 2D Gaussian PDF with\nunit variance, zero mean and no dependence" 
set urange [ -3.00000 : 3.00000 ] noreverse nowriteback
set vrange [ -3.00000 : 3.00000 ] noreverse nowriteback
set xrange [ -3.00000 : 3.00000 ] noreverse nowriteback
set yrange [ -3.00000 : 3.00000 ] noreverse nowriteback
set zrange [ -0.200000 : 0.200000 ] noreverse nowriteback
tstring(n) = sprintf("%d random samples from a 2D Gaussian PDF with\nunit variance, zero mean and no dependence", n)
nsamp = 50
i = 50
GPFUN_tstring = "tstring(n) = sprintf(\"%d random samples from a 2D Gaussian PDF with\\nunit variance, zero mean and no dependence\", n)"
splot u,v,( 1/(2*pi) * exp(-0.5 * (u**2 + v**2)) ) with line lc rgb "black",    "random.tmp" using 1:2:(-0.2) with points pointtype 7 lc rgb "black"