File: random.dem

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#
# $Id: random.dem,v 1.1.1.1.2.1 2001/09/18 11:48:47 lhecking Exp $
#
# random.dem
#
# Lattice test for random numbers;
# If you can see any patterns in this plot, the random number generator
# is not very good.
#
# Copyright (c) 1991, Jos van der Woude, jvdwoude@hut.nl
seed = 1317
seed = rand(seed)
set nokey
set xrange [0: 1]
set yrange [0: 1]
set zrange [0: 1]
set title "Lattice test for random numbers"
set xlabel "rand(n) ->"
set ylabel "rand(n + 1) ->"
set zlabel "rand(n + 2) ->"
set format x "%3.2f"
set format y "%3.2f"
set format z "%3.2f"
set tics
set sample 1000
set function style dots
set parametric
plot rand(1), rand(1)
pause -1 "Hit return to continue"
pause 0 "3D plot ahead, one moment please ..."
set sample 50
splot rand(1), rand(1), rand(1)
pause -1 "Hit return to continue"