grapt
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apg
simple charting tools for unix.
We should support some sort of smoothing, which is useful for when there are a lot of spikes in the data to find the real shape, at the very least....
`GRAPT_COLORS` env variable seems to make sense.
Perhaps [libgd](libgd.bitbucket.org), or even raw libpng, libgif if nothing else is found. We'd need our own simple drawing api in the world of supporting raw libgif/png, but dependency free as...
See [spark](https://github.com/holman/spark). Might as well support this as an output type.
Should either create a new command, or new subcommand which can compute, and then graph the distribution of the data read. Bonus points for being able to support something like...
series_t has a `next` which is intended to be used to support drawing multiple series. We should utilize it. This depends on #2
This is all a bit ugly, and not very robust. Also only supports at most 2 columns, when we might actually want to support more than 2.