🚀 go-pugleaf

I am looking for a package that runs under X that will allow
me to display graphs, tables, etc of numbers generated by a 
simulation. I think what I'm looking for would include things
like displaying the mean and standard deviation of a set of
data, or maybe even putting up data on an x,y display and then
plotting a regression line.

Does this sound confused and vague? To be honest, all I know is
one of my users wants me to come up with "something that will
do math and graphical stuff." I'm just the implementor, but I
would rather not implement something from scratch if somebody
else out there has already done it (probably better than I can :-).

I realize that this is a vague request, but any vague (or pointed)
pointers that anyone can give me would be greatly appreciated.
Especially on this initial request, please email me. If later
on somebody helps me clarify my question, or if the response
merits, I will post additional information.

Thanks to one and all,

John Reading
jonesm@nic.cerf.net  <-- I still haven't gotten my own account :-(