Simple R extension for NetLogo

[jeremy...@northwestern.edu]

Hello NetLogo users!

I'm pleased to announce the availability of the Simple R Extension.  It allows running R code from a NetLogo model with a simple point and click configuration menu for telling the extension about the location on your system of your R install.  This extension was made possible by the hard work of a Northwestern University undergraduate student James Hovet.

You can install the extension through the NetLogo extensions manager.  Check out the docs to get started:  https://github.com/NetLogo/SimpleR-Extension/blob/main/README.md#using

Why a new R extension?  The existing R Extension that comes bundled with NetLogo is tricky to setup, involving a Java install, a Java package for R, and manually creating configuration files to tie them all together.  This new Simple R extension can be set up from within NetLogo using a configuration menu.  The Simple R Extension has most of the features of the bundled version, the documentation for the extension has more info on the differences:  https://github.com/NetLogo/SimpleR-Extension/blob/main/README.md#transitioning-from-the-old-r-extension  The bundled R Extension isn't going anywhere anytime soon, so feel free to continue using that if you've got it set up and you need a feature it provides that the Simple R Extension does not yet.

Feel free to give it a try and see if it will work for your use cases.  You can leave feedback here or send it privately to feed...@ccl.northwestern.edu 

Thanks.

-Jeremy

[Wade Schuette]

Thanks, Jeremy!  This will be very useful!

I tried your instructions and it worked!

Two side comments for users:

(1) If you are new to R,  and you haven't looked at RStudio, consider getting it --- it's a huge help!

      See https://rstudio-education.github.io/hopr/starting.html  for instructions for all platforms.

(2) If you some day want to use R to make system calls ( to your operating system )

     consider using the processX package.  https://ropensci.org/blog/2021/09/13/system-calls-r-package/

     Then this works:    show sr:runresult "processx::run('whoami')"

Wade

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