Rossler Attractor 2D_02

Rossler Attractor 2D_02 preview image

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globals [
     mylist-x
     mylist-y
     mylist-z
     b
     X
     Y
     Z
     dt
    ]

to setup
  clear-all
  ask patches with [ pxcor = 0 ] [  set pcolor white ]
  ask patches with [ pycor = 0 ] [  set pcolor white ]

  set mylist-x list 0 (X)
  set mylist-y list 0 (Y)
  set mylist-z list 0 (Z)
  system-dynamics-setup
  system-dynamics-do-plot
end 

to system-dynamics-setup
  reset-ticks
  set dt 0.01
  set b 0.2
  set X 1
  set Y 0
  set Z 0
end 

to go
  system-dynamics-go
  system-dynamics-do-plot
  set mylist-x lput result-x mylist-x
  set mylist-y lput result-y mylist-y
  set mylist-z lput result-z mylist-z

  crt 1 [
  set color red
  set xcor (last mylist-x ) * 7
  set ycor (last mylist-y ) * 7
  set size 0.5
  set shape "circle"
  ]
end 

to-report result-x
  report X
end 

to-report result-y
    report Y
end 

to-report result-z
    report Z
end 

to system-dynamics-go

  let local-c c
  let local-inflow inflow
  let local-inflow1 inflow1
  let local-inflow2 inflow2

  let new-X ( X + local-inflow1 )
  let new-Y ( Y + local-inflow )
  let new-Z ( Z + local-inflow2 )
  set X new-X
  set Y new-Y
  set Z new-Z

  tick-advance dt
end 

to-report inflow
  report ( X + a * Y
  ) * dt
end 

to-report inflow1
  report ( - Y - Z
  ) * dt
end 

to-report inflow2
  report ( b + Z * ( X - c )
  ) * dt
end 

to-report c
  report c-slider
end 

to-report a
  report a-slider
end 

to system-dynamics-do-plot
  if plot-pen-exists? "X" [
    set-current-plot-pen "X"
    plotxy ticks X
  ]
  if plot-pen-exists? "Y" [
    set-current-plot-pen "Y"
    plotxy ticks Y
  ]
  if plot-pen-exists? "Z" [
    set-current-plot-pen "Z"
    plotxy ticks Z
  ]
end 

There is only one version of this model, created over 1 year ago by Victor Iapascurta.

Attached files

File Type Description Last updated
Rossler Attractor 2D_02.png preview Preview for 'Rossler Attractor 2D_02' over 1 year ago, by Victor Iapascurta Download

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