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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: user-new-file
NetLogo Dictionary
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user-new-file 3.1

user-new-file

Opens a dialog that allows the user to choose a location and name of a new file to be created. It reports a string with the absolute file path or false if the user cancels.

file-open user-new-file
;; Assumes the user will choose a file

Note that this reporter doesn’t actually create the file; normally you would create the file using file-open, as in the example.

If the user chooses an existing file, they will be asked if they wish to replace it or not, but the reporter itself doesn’t cause the file to be replaced. To do that you would use file-delete.

Note: This primitive is not compatible with NetLogo Web. If you wish to read the contents of a file with the same code and the same behavior in both NetLogo and NetLogo Web, see fetch:user-file-async.

Take me to the full NetLogo Dictionary.

NetLogo Dictionary: user-message

Documentation for the user-message primitive.

NetLogo Dictionary: user-one-of

Documentation for the user-one-of 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.

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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 .