Rolling Plot Example

to setup
  clear-all
  create-turtles 1
  [                               ; create one turtle
    set color red
    set xcor (2 + min-pxcor)      ; set the turtle's initial position and heading
    set ycor 0
    set heading 0
    set size 5                    ; easier to see this way
    pen-down
  ]
  reset-ticks
end 

to go
    ask turtles
    [
      fd (pi * (max-pycor - 2) / 180) / 8   ; move in a circle
      rt 0.125
    ]
    tick
end 

;; the actual plotting code is in the plot itself, in the Interface tab


; Public Domain:
; To the extent possible under law, Uri Wilensky has waived all
; copyright and related or neighboring rights to this model.