Violin Plot

Violin plot based on the classic iris dataset. Adapted from https://www.d3-graph-gallery.com/graph/violin_basicDens.html.

The (async () => { ... })() bit is a so-called Immediately Invoked Function Expression, which is just a way to define a function and run it immediately without having to give it a name. It is used here to contain all logic that depends on asynchronous operations like fetching datasets.