Motivated by recent discussion, here is four hours hack…
I implemented RMagick API just enough to run a Gruff graph library
example.
http://nubyonrails.com/pages/gruff/
You can compare these two pictures to gauge the status.
http://sparcs.kaist.ac.kr/~tinuviel/temp/gruff-ruby.png
http://sparcs.kaist.ac.kr/~tinuviel/temp/gruff-ironruby.png
There are position errors, because text measurement is not yet
implemented. This will be fixed in due time.