gruff is all right--the killer app doesn't seem to quite exist.  Google 
for it, maybe it does now :)
You can also call gnuplot, if you desire.
-Roger
Kenneth McDonald wrote:
> There are, of course, a plethora of choices for doing graphing in Ruby
> and for JRuby, in Java. I'd be grateful for opinions on the "best" ones,
> and why people think they are the best.
> 
> Thanks,
> Ken

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