Gadfly is an excellent ggplot2-style plotting package:

http://gadflyjl.org

Winston is a most traditional plotting API:

http://winston.readthedocs.org/en/latest/examples.html

You can also plot seamlessly via Python using PyPlot:

https://github.com/stevengj/PyPlot.jl

They are all quite well documented.

Thanks. I guess I would disagree with the assertion that Gadfly is "quite well documented". It has some docs, but they are mostly just a list of parameters (with no indication of what values you could/should set them to) and maybe one example, e.g. http://gadflyjl.org/geom_boxplot.html

Perhaps it's all very obvious if you're already familiar with ggplot2, but as somebody without an R background, I found their docs extremely spartan.

Still working my way through them myself. Useful examples working through docs would be useful. Most seem to presume a lot of knowledge of the libraries.

You are right - package documentation has some ways to go. Currently we don't yet have a mechanism to do `help()` on a package function, but we expect that to change in 0.4.

Would love to help in some way.

I believe there are bindings to plot.ly

One of the plot.ly engineers uses Julia, I think and wrote a package with bindings. Doesn't seem to be actively maintained:

https://github.com/plotly/Plotly-Julia

Here are the docs: https://plot.ly/julia/