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File Content: `tdemo_chaos.py`

# File: tdemo_chaos.py
# Author: Gregor Lingl
# Date: 2009-06-24

# A demonstration of chaos

from turtle import *

N = 80

def f(x):
    return 3.9*x*(1-x)

def g(x):
    return 3.9*(x-x**2)

def h(x):
    return 3.9*x-3.9*x*x

def jumpto(x, y):
    penup(); goto(x,y)

def line(x1, y1, x2, y2):
    jumpto(x1, y1)
    pendown()
    goto(x2, y2)

def coosys():
    line(-1, 0, N+1, 0)
    line(0, -0.1, 0, 1.1)

def plot(fun, start, colour):
    pencolor(colour)
    x = start
    jumpto(0, x)
    pendown()
    dot(5)
    for i in range(N):
        x=fun(x)
        goto(i+1,x)
        dot(5)

def main():
    reset()
    setworldcoordinates(-1.0,-0.1, N+1, 1.1)
    speed(0)
    hideturtle()
    coosys()
    plot(f, 0.35, "blue")
    plot(g, 0.35, "green")
    plot(h, 0.35, "red")
    # Now zoom in:
    for s in range(100):
        setworldcoordinates(0.5*s,-0.1, N+1, 1.1)
    return "Done!"

if __name__ == "__main__":
    main()
    mainloop()

Name	Size	Permission
about_turtle.txt	3525 bytes	0644
about_turtledemo.txt	302 bytes	0644
demohelp.txt	2438 bytes	0644
tdemo_I_dontlike_tiltdemo.py	1073 bytes	0644
tdemo_I_dontlike_tiltdemo.pyc	1659 bytes	0644
tdemo_I_dontlike_tiltdemo.pyo	1659 bytes	0644
tdemo_bytedesign.py	4219 bytes	0644
tdemo_bytedesign.pyc	5313 bytes	0644
tdemo_bytedesign.pyo	5313 bytes	0644
tdemo_chaos.py	953 bytes	0644
tdemo_chaos.pyc	2297 bytes	0644
tdemo_chaos.pyo	2297 bytes	0644
tdemo_clock.py	3018 bytes	0644
tdemo_clock.pyc	4490 bytes	0644
tdemo_clock.pyo	4490 bytes	0644
tdemo_colormixer.py	1338 bytes	0644
tdemo_colormixer.pyc	2365 bytes	0644
tdemo_colormixer.pyo	2365 bytes	0644
tdemo_fractalcurves.py	3410 bytes	0644
tdemo_fractalcurves.pyc	3524 bytes	0644
tdemo_fractalcurves.pyo	3524 bytes	0644
tdemo_lindenmayer_indian.py	2433 bytes	0644
tdemo_lindenmayer_indian.pyc	3602 bytes	0644
tdemo_lindenmayer_indian.pyo	3602 bytes	0644
tdemo_minimal_hanoi.py	1961 bytes	0644
tdemo_minimal_hanoi.pyc	3589 bytes	0644
tdemo_minimal_hanoi.pyo	3589 bytes	0644
tdemo_nim.py	6588 bytes	0644
tdemo_nim.pyc	9383 bytes	0644
tdemo_nim.pyo	9383 bytes	0644
tdemo_paint.py	1126 bytes	0644
tdemo_paint.pyc	1737 bytes	0644
tdemo_paint.pyo	1737 bytes	0644
tdemo_peace.py	1117 bytes	0644
tdemo_peace.pyc	1443 bytes	0644
tdemo_peace.pyo	1443 bytes	0644
tdemo_penrose.py	3536 bytes	0644
tdemo_penrose.pyc	6005 bytes	0644
tdemo_penrose.pyo	6005 bytes	0644
tdemo_planet_and_moon.py	2840 bytes	0644
tdemo_planet_and_moon.pyc	4548 bytes	0644
tdemo_planet_and_moon.pyo	4548 bytes	0644
tdemo_tree.py	1411 bytes	0644
tdemo_tree.pyc	2123 bytes	0644
tdemo_tree.pyo	2123 bytes	0644
tdemo_wikipedia.py	1347 bytes	0644
tdemo_wikipedia.pyc	1955 bytes	0644
tdemo_wikipedia.pyo	1955 bytes	0644
tdemo_yinyang.py	808 bytes	0644
tdemo_yinyang.pyc	1320 bytes	0644
tdemo_yinyang.pyo	1320 bytes	0644
turtle.cfg	160 bytes	0644
turtleDemo.py	10183 bytes	0644
turtleDemo.pyc	10212 bytes	0644
turtleDemo.pyo	10212 bytes	0644
turtledemo_two_canvases.py	885 bytes	0644
turtledemo_two_canvases.pyc	1252 bytes	0644
turtledemo_two_canvases.pyo	1252 bytes	0644

File Content: tdemo_chaos.py

File Content: `tdemo_chaos.py`