polar gnuplot demo

#
# $Id: polar.dem,v 1.4 1995/03/27 18:07:43 drd Exp $
#
# Show some of the new polar capabilities.
#
set noborder
set clip
set polar
set xtics axis nomirror
set ytics axis nomirror
set samples 160
set zeroaxis
set trange [0:2*pi]
set title "Three circles (with aspect ratio distortion)"
plot .5,1,1.5

set title ""

plot cos(2*t)

plot 2*sqrt(cos(t)),-2*sqrt(cos(t))

plot sin(4*t),cos(4*t)
set offset 0,0,0,0

set xrange [-5:5]
set yrange [-5:5]
plot t/cos(3*t)

set autoscale

plot 1-sin(t)

set trange [0:12*pi]
plot 2*t

butterfly(x)=exp(cos(x))-2*cos(4*x)+sin(x/12)**5
set samples 800
pause 0 "This is a big one (many samples), be patient..."
set title "Butterfly"
set nokey
plot butterfly(t)

# undo what we've done above
reset