Pietro Vertechi

I confess I would be a little hesitant to overload that method, but I was wondering whether another option could be to make `Layer` callable, so that one would do...

> for the overloading of `*` do you mean because it feels weird? (From a type piracy point of view it's legal as long as AoG owns one of the...

Currently the pair is used to make transformation on the data, for example `color = :SepalLength => cut` (split into discrete bins the `SepalLength`). On the other hand, I wonder...

[MakieThemes](https://github.com/JuliaPlots/MakieThemes.jl) should provide a few default themes, but we should also make sure that it's easy to customize. I would just use a dictionary rather than a method table, but...

> I don't fully understand what the code does. But what happens if you use color for grouping but there happens to be just one group? (In my opinion, the...

After thinking a bit more, I think it's a very good idea: I often end up calling `table` anyway inside the `groupby` function as I want to do something that...

One thing that I just ran into: an advantage of `Columns` is that tables do not allow `df[I]` where `I` is a vector of booleans or an unsorted vector. We...

Something like ```julia df = (x = rand(100), y = rand(100), z = rand(100)) vars = [:x, :y, :z] data(df) * (visual(Scatter) + linear()) * mapping([:x, :y, :z], [:x :y...

I think something like ```julia data(df) * (visual(Scatter) + linear()) * mapping(:x, :x, col = :group => nonnumeric, row = :group => nonnumeric) ``` should do the trick in that...

Ah yes, of course you are right... I'm afraid there is no way at the moment other than manually unstacking the data to pass to the wide format.