Hello, I was looking through the API for Plots.jl
http://plots.readthedocs.org/en/latest/#api Maybe I'm the only one, but I think all those exclamation marks are a bit extraneous and feel like syntactic noise. I have been following Plots.jl because I'm interested in plotting. My use of Julia comes down to either making plots, or post-processing data so I can make a plots. I get the idea from Plots.jl that functions that end in an exclamation mark are supposed to modify an existing plot. So you get things like: plot!(...) # Add another plot to an existing one. title!(...) xaxis!("mylabel", :log, :flip) xlims!(...) xticks!(...) and so on... This means that in actual usage, almost every line I write needs to have an extra `!`. To me this means that the `!` is not adding real information and is just syntactic noise. I currently use PyPlot, so I use that as a point of comparison. In PyPlot, all commands edit the current plot unless you explicitly call `figure()` to create a new plot. You can also use clf() to clear the current plot. I think this is something that PyPlot / Matplotlib get right. The special syntax lines up with the less common action. I don't know if anyone agrees with me. I still think Plots.jl is a step in the right direction and I'll keep cheering from the stands. I just wanted to share my thoughts. Cheers, Daniel.
