Hennon attractor for fractal dimension calculations
Code: "hennon_attractor.py". Programming language: Python DMelt Version 1.4. Last modified: 08/20/2017. License: Pro
https://datamelt.org/code/cache/hennon_attractor_4762.py
To run this script using the DMelt IDE, copy the above URL link to the menu [File]→[Read script from URL] of the DMelt IDE. 

from jhplot  import *

a,b=1.4,0.3 # initial values 
p=P1D("Henon attractor")
p.setSymbol("Dot")
x,y=0,0
for i in range(100000):
   x1=x
   x=1+y-a*x*x
   y=b*x1
   p.add(x,y)
c1 = SPlot()
c1.setGTitle("Henon attractor")
c1.visible(); c1.setAutoRange()
c1.draw(p)

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