[MacRuby-devel] scientific plotting engine

[Jonathan Mace]

Good afternoon MacRuby'rs,

Hopefully this question is not out of place, but if it is, my apologies.

I just downloaded and installed MacRuby, and am new to this, although I do have an (old) background in programming as it relates to physics.  I'm wondering if there is a general scientific plotting engine, e.g., GNUplot or something similar, that anyone could recommend for integrating into custom MacRuby-Cocoa programs (general/customizable 2D and 3D capabilities, and data visualization).  In particular, is there an existing package that nicely takes advantage of OS X 10.6 frameworks within the context of the PDF kit?  

Thanks,
Jonathan