NetLogo

Bug Fixes and Changes

• The models library will correctly display when NetLogo is set to a language other than English.
• The log4j library has been removed from NetLogo. Logging is now configured from the NetLogo preferences dialog. The output is in JSON text file format. See the Logging docs for more information.
• BehaviorSpace experiments can now also be run from a terminal or command console using the NetLogo_Console app with NetLogo’s bundled Java by using the --headless flag. See the BehaviorSpace documentation for more information and examples. This avoids the need to install and configure a separate Java runtime to use the netlogo-headless.sh script, which remains bundled for those who require it.
• BehaviorSpace output files are now chosen directly during run setup instead of separate prompts at the run start. This simplifies the setup process and resolves a bug where the runs would not occur on macOS.
• The System Dynamics Modeler UI has some small improvements.
• Fixed a bug where slider widgets would allow initial values outside of their range when changing the limits.
• Better handle asymptotic values for tan with a proper error message.
• NetLogo will now correctly handle running map or foreach when no lists are given.
• When an anonymous task that uses let variables is displayed as a string it will now include those variable names.
• Reporters used in concise task syntax no longer give the wrong result when used with fewer arguments than their default.
• The models library location will be correctly set when using GUI scripts.
• Behaviorsearch now sets a flag to alert extensions that they are being run without a UI so that extension code can adjust appropriately.

Extension Updates

• GoGo: Improve newer GoGo board compatibility and improve the stability of the extension.
• LevelSpace: Eliminate crashes when the controlling API is used to run NetLogo without a UI.
• Profiler: The profiler:data results are now given in milliseconds instead of nanoseconds, matching the other primitives in the extension.
• Python: Improvements in how the extension searches for the Python binaries when they aren’t specified via the configuration menu.
• Vid: Update backing libraries to try to improve stability and usability on macOS and Windows.

Documentation Updates

• Update the system requirements to include Windows 11.
• Fixed a bad link to the extension API version 5 to 6 transition guide.
• Added a FAQ entry on how to save random seeds from runs.

Models Library Changes

New Sample Models:

• Slime Mold Network
• Virus Using Discrete Event Simulator (cross-listed in code examples for time extension)
• Distribution Center Discrete Event Simulator (cross-listed in code examples for time extension)
• Hydrogen Gas Production
• CA 1D-Squaring
• Molecular Dynamics Lennard-Jones

New Curricular Models:

• CT-STEM
• Habitat Preference

New Code Examples:

• time: Logotimes Example
• time: Discrete Event Whack-a-Mole

Sample Model Changes

• Taxi Cabs: Fixed Dongping Zhang’s name in the credits.
• Turbulence: Cross-listed under CS/CA.
• Tree Simple: Changed init-x slider min/max to -100/100. Before the range was -125/125, which caused an error.
• Traffic Basic: Changed speed-limit and speed-min from agent variables to be globals.
• Urban Suite - Cells: Renamed the go * 80 button to go * 40, reflecting its actual effect.
• CA 1D Rule 30 - Improved the info tab to explain how Rule 30 has been used as random number generator.

Curricular Models Changes:

• PNoM 4 Virtual Syringe Force Graph: fixed a bug that produced an error message.
• Kidney Reabsorption: Some improvements to the info tab.

Newly Verified Models

• The suite of prisoner’s dilemma models have been in the models library for a long time but were previously “unverified.” They have been reviewed/verified and moved into the main Social Science folder.