#
# $Id: hidden.dem%v 3.38.2.61 1993/01/27 02:35:31 woo Exp woo $
#
#
set samples 41
set isosamples 41
set hidden3d
set title "Bithell's Set of Relative Risk Functions"
set xrange [-3:3]
set yrange [-3:3]

splot 1 + exp(-(sqrt(x*x + y*y)))
splot 1 + exp(-(x*x + y*y))
splot 1 + 1/(1 + sqrt(x*x + y*y))

set samples 20
set isosamples 20
set zrange [0:10]
splot exp(1/sqrt(x*x + y*y))