NetLogo 2.0.0 User Manual NetLogo 2.0.0 User Manual Table of Contents What is NetLogo?..............................................................................................................................1 Features...................................................................................................................................1 Copyright Information.......................................................................................................................3 What's New?.......................................................................................................................................5 Version 2.0.0 (December 10, 2003).........................................................................................5 Version 1.3.1 (September 2003)..............................................................................................8 Version 1.3 (June 2003)...........................................................................................................9 Version 1.2 (March 2003)........................................................................................................9 Version 1.1 (July 2002)............................................................................................................9 Version 1.0 (April 2002).........................................................................................................10 System Requirements.....................................................................................................................11 System Requirements: Application........................................................................................11 Windows...........................................................................................................................11 Mac OS X.........................................................................................................................11 Mac OS 8 and 9...............................................................................................................11 Other platforms................................................................................................................11 System Requirements: Saved Applets..................................................................................11 Known Issues...................................................................................................................................13 Known bugs (all systems)......................................................................................................13 Windows−only bugs...............................................................................................................13 Macintosh−only bugs.............................................................................................................13 Linux/UNIX−only bugs...........................................................................................................13 Known issues with computer HubNet....................................................................................13 Planned features....................................................................................................................13 Unimplemented StarLogoT primitives....................................................................................14 Contacting Us..................................................................................................................................15 Web Site................................................................................................................................15 Feedback, Questions, Etc......................................................................................................15 Reporting Bugs......................................................................................................................15 Sample Model: Party.......................................................................................................................17 At a Party...............................................................................................................................17 Challenge...............................................................................................................................19 Thinking With Models.............................................................................................................20 What's Next?..........................................................................................................................20 Tutorial #1: Models..........................................................................................................................21 Sample Model: Wolf Sheep Predation...................................................................................21 Controlling the Model: Buttons...............................................................................................22 Adjusting Settings: Sliders and Switches...............................................................................23 Gathering Information: Plots and Monitors............................................................................25 Plots.................................................................................................................................25 Monitors...........................................................................................................................25 i NetLogo 2.0.0 User Manual Table of Contents Tutorial #1: Models Controlling the Graphics Window...........................................................................................26 The Models Library................................................................................................................29 Sample Models................................................................................................................30 Curricular Models.............................................................................................................30 Code Examples................................................................................................................30 HubNet Calculator & Computer Activities........................................................................30 What's Next?..........................................................................................................................30 Tutorial #2: Commands...................................................................................................................31 Sample Model: Traffic Basic..................................................................................................31 The Command Center...........................................................................................................31 Working With Colors..............................................................................................................34 Agent Monitors and Agent Commanders...............................................................................36 What's Next?..........................................................................................................................39 Tutorial #3: Procedures...................................................................................................................41 Setup and Go.........................................................................................................................41 Patches and Variables...........................................................................................................45 An Uphill Algorithm................................................................................................................48 Some More Details................................................................................................................52 What's Next?..........................................................................................................................53 Appendix: Complete Code.....................................................................................................54 Interface Guide.................................................................................................................................57 Menus....................................................................................................................................57 Main Window.........................................................................................................................59 Interface Tab....................................................................................................................59 Procedures Tab................................................................................................................62 Information Tab................................................................................................................63 Errors Tab........................................................................................................................64 Programming Guide........................................................................................................................65 Agents....................................................................................................................................65 Procedures.............................................................................................................................66 Variables................................................................................................................................67