The ruby wrapper lib around the JS is dead simple. Could be ported to any language with ease. Very nice work! https://github.com/ankane/chartkick/blob/master/lib/chartkic...
We are building something similar for Django/Python: https://github.com/agiliq/django-graphos I am going to pick up some ideas from your code.
shabda - this is great. i'm going to try this out and contribute some more graph types over the next few weeks.