Tie System Example

breed [ suns sun ]
breed [ planets planet ]
breed [ moons moon ]

to setup
  ca
  set-default-shape turtles "planet"
  create-suns 1
  [ set size 6
    set color yellow ]
  create-planets 5
  [ set size 2
    set color blue + random 3
    fd 6 + random-float 12
    create-link-from one-of suns[ tie hide-link ]
    hatch-moons 2
    [ set size 0.5
      set color gray + random 3
      fd 1 +  random-float 3
      create-link-from myself [ tie hide-link ]
    ]
  ]
end 


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