It seems promising, but it also seems like an inactive project, according to the commit dates on the GitHub page linked in the other comment.
Also, there is a sizable amount of dependencies for this library, all due to the use of flot. Since most of the code doesn't use any of the dependencies, I wonder if they would consider releasing any future versions as two parts, jstat.js (containing the number crunching methods) and jstat-flot.js (containing the plotting wrapper methods).
I've been really busy the last several months. The project definitely isn't dead. I check it every day for pull requests and bugs. Just haven't had the time to extend it myself.
Also, there is a sizable amount of dependencies for this library, all due to the use of flot. Since most of the code doesn't use any of the dependencies, I wonder if they would consider releasing any future versions as two parts, jstat.js (containing the number crunching methods) and jstat-flot.js (containing the plotting wrapper methods).