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Scripting

Information on writing scripts to control JMRI in more detail:

• Getting Started
• The Python/Jython Language
• Example: Setting Turnouts
• Examples (Links)
• JMRI Scripting "How To..."
• JMRI Scripting "What...Where"
• Jynstruments to modify the GUI
• Open Scripting (for Mac)

Python and Jython (General Info)

JMRI scripts are in Jython, a version of Python, a popular general-purpose computer language

• The Python/Jython Language
• Python home page
• Python tutorial for non-programmers
• Python tutorial for programmers

Tools

JMRI provides powerful tools for working with your layout.

• Turnouts
• Lights
• Sensors
• Throttles
• Consisting
• Signaling
• Blocks
• Reporters
• Memory Variables
• Routes
• LRoutes
• Sections
• Transits
• Logix
• Fast Clocks
• Speedometer
• Audio
• Id Tags
• LogixNG
• Timetable
• System-specific...

Layout Automation

JMRI can be used to automate parts of your layout, from simply controlling a crossing gate to running trains in the background.

• Signaling
• Entry Exit (NX)
• Warrants
• Dispatcher
• Routes
• Fast Clocks
• Scripting

JMRI: Open Scripting Architecture

On macOS, you can use the Open Scripting Architecture (OSA) with JMRI to send instructions to OS X or other applications.

You can embed or call OSA scripts within JMRI scripts, invoking them to have your Mac perform functions outside JMRI. An example of this is in the AppleScript.py sample script distributed with JMRI. It executes a simple AppleScript:

  tell application "Finder"
    make new folder at desktop
  end tell
                

The sample script shows how to do this, and can easily form the basis for running your own OSA scripts from within JMRI.

JMRI 4.5.2 or newer can directly call AppleScript without embedding it in another script by adding JMRI AppleScript Support to your JMRI installation. Note that this may not work in future versions of macOS or Java.

AppleScript Information

For more information on AppleScript, please see:

• AppleScript Help at Apple.
• The Wikipedia AppleScript article has some interesting background info.
• AppleScript Overview at Apple.

A Google search will turn up lots of interesting resources.

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