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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: file-write
NetLogo Dictionary
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file-write 2.0

file-write value

This command will output value, which can be a number, string, list, boolean, or nobody to an opened file, notfollowed by a carriage return (unlike file-print and file-show).

This agent is not printed before the value, unlike file-show. Its output also includes quotes around strings and is prepended with a space. It will output the value in such a manner that file-read will be able to interpret it.

Note that this command is the file i/o equivalent of write, and file-open needs to be called before this command can be used.

file-open "locations.txt"
ask turtles
[ file-write xcor file-write ycor ]

See also file-print, file-show, file-type, and Output (/programming guide).

Take me to the full NetLogo Dictionary.

NetLogo Dictionary: file-type

Documentation for the file-type primitive.

NetLogo Dictionary: filter

Documentation for the filter 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
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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 .