Plotter is currently written using green shoes, which requires a number of external libraries. As a result, it probably doesn't work in JRuby, MacRuby, or really anywhere other than MRI.
Implement a version of SciRuby::Plotter with continuous evaluation that displays and updates the output in a web browser instead of the native window manager.
The long term solution:
Adapt green_shoes to work with MacRuby, JRuby, etc., or implement alternate versions of Plotter to function in these environments.
Plotter is currently written using green shoes, which requires a number of external libraries. As a result, it probably doesn't work in JRuby, MacRuby, or really anywhere other than MRI.
Additionally, green_shoes is known to not work with macruby.
The short term solution:
The long term solution: