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Home
Learn NetLogo
What is NetLogo? Tutorial #0 Sample Model Tutorial #1 Models Tutorial #2 Commands Tutorial #3 Procedures
Documentation
NetLogo Dictionary Interface Guide Interface Tab Guide Info Tab Guide Code Tab Guide Programming Guide Transition Guide Preferences Guide Version History
Advanced Tools
Extension Manager Shapes Editor BehaviorSpace System Dynamics HubNet HubNet Authoring Logging Controlling Mathematica Link NetLogo 3D NetLogoLab Cluster Computing (HPC)
Extensions
Extensions Guide Arduino Array Bitmap CSV GIS GoGo LevelSpace Matrix Networks Palette Profiler Python Resource Rnd Sound Simple R Table Time Vid View2.5D
FAQ
primitive: turtles-own
NetLogo Dictionary
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turtles-own

turtles-own var1 …

<breeds>-own var1 …

The turtles-own keyword, like the globals, breed, <breeds>-own, and patches-own keywords, can only be used at the beginning of a program, before any function definitions. It defines the variables belonging to each turtle.

If you specify a breed instead of “turtles”, only turtles of that breed have the listed variables. (More than one turtle breed may list the same variable.)

breed [cats cat ]
breed
[dogs dog]
breed
[hamsters hamster]
turtles-own
[eyes legs] ;; applies to all breeds
cats-own
[fur kittens]
hamsters-own
[fur cage]
dogs-own
[hair puppies]

See also globals, patches-own, breed, <breeds>-own.

Take me to the full NetLogo Dictionary.

NetLogo Dictionary: turtles-on

Documentation for the turtles-on primitive.

NetLogo Dictionary: type

Documentation for the type primitive.


NetLogo is a programmable modeling environment for simulating natural and social phenomena. It was authored by Uri Wilensky in 1999 and has been in continuous development ever since at the Center for Connected Learning and Computer-Based Modeling.

Related Links
  • NetLogo Home
  • CCL Home
  • NetLogo Web
  • NetTango Web
  • NetLogo 3D
  • BehaviorSearch
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Copyright © 1999-2026 Uri Wilensky and the Center for Connected Learning and Computer-Based Modeling at Northwestern University . All rights reserved.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License , or (at your option) any later version.

Commercial licenses are also available. To inquire about commercial licenses, please contact Uri Wilensky at [email protected] .

For more information, visit the NetLogo website .