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NetLogo 3.0.2 User Manual For graphics rendering, NetLogo uses JOGL, a Java API for OpenGL. For more information about JOGL, see http://jogl.dev.java.net/. The library is distributed under the BSD license: Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: • Redistribution of source code must retain the above copyright notice, this list of conditions and the following disclaimer. • Redistribution in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of Sun Microsystems, Inc. or the names of contributors may be used to endorse or promote products derived from this software without specific prior written permission. This software is provided "AS IS," without a warranty of any kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON−INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. You acknowledge that this software is not designed, licensed or intended for use in the design, construction, operation or maintenance of any nuclear facility. Sun gratefully acknowledges that this software was originally authored and developed by Kenneth Bradley Russell and Christopher John Kline. 6 Copyright Information
What's New? Feedback from users is very valuable to us in designing and improving NetLogo. We'd like to hear from you. Please send comments, suggestions, and questions to feedback@ccl.northwestern.edu, and bug reports to bugs@ccl.northwestern.edu. Version 3.0.2 (November 23, 2005) • content: ♦ improved models: Party (bugfix), Sound Machines (bugfix), Bug Hunt Camouflage (bugfix), Traffic Basic (bugfix) ♦ assorted minor fixes to User Manual • engine fixes: ♦ fixed 3.0−only bug where the repeat and foreach commands didn't work in some recursive procedures ♦ fixed 3.0−only bug where turtles could be mispositioned in the 2D view when the patch size wasn't an integer, or when zoomed ♦ fixed 3.0−only bug that caused some models to run slowly when zoomed ♦ fixed appearance of "line" and "line half" shapes in the 3D view ♦ fixed bug in import−drawing that caused grayscale images to be lightened slightly ♦ when running headless from the command line, the user manual now recommends using Java's −Xms command line flag for best performance • System Dynamics Modeler fixes: ♦ converters and stocks are now initialized in a well−defined order during system−dynamics−setup ♦ fixed bug where NetLogo was sometimes unable to load saved system dynamics models • interface fixes: ♦ in buttons and monitors, the locations of syntax errors now are highlighted ♦ fixed bug in shapes editor where "Rotate" button sometimes misbehaved ♦ fixed bug in BehaviorSpace GUI where a results file could remain open even after the experiment was finished ♦ on Windows, a model opened by double−clicking in Windows Explorer can now be saved using Save instead of Save As Version 3.0 (September 2005) • content: ♦ new network models: Giant Component, Preferential Attachment, Small Worlds ♦ new EvoLab evolution models: Bug Hunt Camouflage, Bug Hunt Speeds ♦ new NIELS electromagnetism models: Electrostatics, Conductor ♦ new MaterialSim materials science model: MaterialSim Grain Growth ♦ new ProbLab probability model: 9−Block Stalagmite, Central Limit Theorem, Dice Stalagmite, Expected Value Advanced, ProbLab Genetics, Random Basic Advanced ♦ new system dynamics models: Exponential Growth, Logistic Growth, Wolf Sheep Predation (System Dynamics), Wolf Sheep Predation (docked) ♦ new biology models: Autumn, Algae, Moths, Disease Solo, Echo ♦ new physics & chemistry models: GasLab Circular Particles, DLA Alternate, DLA Alternate Linear, Polymer Dynamics What's New? 7
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Page 20 and 21: NetLogo 3.0.2 User Manual PROCUREME
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Page 28 and 29: Version 1.3 (June 2003) • graphic
Page 30 and 31: System Requirements: Saved Applets
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Page 34 and 35: • On Mac OS X 10.2 only, opening
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Page 38 and 39: 5. Press the "open" button. 6. Wait
Page 40 and 41: tolerance level, more mixed groups
Page 42 and 43: • Press the "setup" button. What
Page 44 and 45: Another type of setting is called a
Page 46 and 47: Let's experiment with the effect of
Page 48 and 49: NetLogo 3.0.2 User Manual In Wolf S
Page 50 and 51: Sample Models The Sample Models sec
Page 52 and 53: In Traffic Basic: • Press the "se
Page 54 and 55: • Choose "Turtles" from the popup
Page 56 and 57: To get a color that doesn't have it
Page 58 and 59: other way is to type inspect turtle
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Page 62 and 63: Now you have a button called 'setup
Page 64 and 65: Then add its procedure to the Proce
Page 66 and 67: The setup−patches procedure sets
Page 68 and 69: that. Write: to setup−patches ask
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in the code. Even one extra space w
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What's Next? So now you have a nice
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NetLogo 3.0.2 User Manual 60 Tutori
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Edit Tools Export Interface Save a
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The buttons in the toolbar are desc
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NetLogo 3.0.2 User Manual • The o
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Some shapes have true 3D counterpar
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NetLogo 3.0.2 User Manual To determ
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We recommend reading the Informatio
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NetLogo 3.0.2 User Manual 74 Interf
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The total number of patches is dete
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If a variable is a global variable,
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NetLogo 3.0.2 User Manual You can a
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Usually, the observer uses ask to a
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Code Example: Ask Agentset Example
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Example #3: The user has two foreve
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The Primitives Dictionary has a sec
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foreach [1 2 3] [ ask turtles [ fd
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When entering a number, the letter
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Plotting NetLogo's plotting feature
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with the set−plot−pen−interva
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Output This section is about output
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The user−choose−directory, user
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NetLogo 3.0.2 User Manual 102 Progr
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Shapes library And here are the sha
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Other buttons The "Rotate Left" and
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Historical Note Old versions of Net
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Go commands: These commands will be
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The −−experiment argument is us
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encoding than us−ascii, such as U
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Computer HubNet Activities The foll
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particular, networks that use the I
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NetLogo 3.0.2 User Manual 120 HubNe
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If you are using Computer HubNet, y
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When using Calculator HubNet the hu
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CC−WINDOW 323 339 638 459 Command
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NetLogo 3.0.2 User Manual 128 HubNe
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Just use the URL where you have sto
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as getIntegerValue(). • Throw org
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NetLogo 3.0.2 User Manual The exten
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} } } catch( java.io.IOException ex
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The two forms of runExperiment that
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succesfully use them, or run into p
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output−port−coast output−port
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set−output−port−power set−o
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play−drum play−drum drum veloci
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NetLogo 3.0.2 User Manual 17. Drawb
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• Can I use the mouse to "paint"
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Is the source code to NetLogo avail
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Will NetLogo and NetLogo 3D remain
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Can a model saved as an applet use
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• Use the freeze switch in the vi
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un across multiple computers, but y
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The NetLogo world is a torus, that
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I'm getting numbers like 0.10000000
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[ ask ? [ ... ] ] NetLogo 3.0.2 Use
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Color primitives color extract−hs
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Constants Mathematical Constants e
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If you are not sure how NetLogo wil
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eep beep Emits a beep. Note that th
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The error−message reporter can be
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color This is a built−in turtle v
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date−and−time date−and−time
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Unlike "distance−nowrap", turtles
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empty? empty? list empty? string Re
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values" (.csv) format. CSV files ca
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file−close−all file−close−a
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file−read−characters file−rea
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first first list first string On a
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Most often, globals is used to defi
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histogram−from turtles [color] ;;
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hubnet−message−source hubnet−
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Future versions of HubNet will supp
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import−world import−world filen
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is−string? is−turtle? is−turt
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left lt left number The turtle turn
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M map map [reporter] list (map [rep
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min−one−of min−one−of agent
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movie−grab−view movie−grab−
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neighbors neighbors4 Reports an age
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Note that nsum/nsum4 are equivalent
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See also patch−at. patch−ahead
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patches−own patches−own [var1 v
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plot−name plot−name Reports the
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pxcor pycor pxcor pycor These are b
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;; mean of 3.4 random−int−or−
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=> 8 show length read−from−stri
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emove−item remove−item index li
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ide ride turtle Set the perspective
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screen−edge−x screen−edge−y
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set−current−directory string Se
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• 2 (point mode): the plot pen dr
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=> [5 2 4 1 3] show shuffle [1 2 3
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startup startup User−defined proc
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that high in practice may vary from
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=> 40 If the name of a breed is sub
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The calling agent is not printed be
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show user−input "What is your nam
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while [reporter] [ commands ] If re
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show word "tur" "tle" => "turtle" w
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NetLogo 3.0.2 User Manual 256 Primi
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