The ten LiveView components as stored designs (spec/14 §15, D-64).

Each preset is a function from a component's assigns — the keys of its table in spec/10, an absent one taking defaults/1 — to a design map of spec/14: no function reaches the map, because the accessor assigns are applied once by sources/2, the assign mapping, into the rows the design's one source (data) binds to. Visualize.Components and Visualize.Components.Tree render these designs through Visualize.Chart.Frame; a design is also a value of its own, storable and bindable to any source with the same columns.

Examples

iex> design =
...>   Visualize.Chart.Presets.bar_chart(%{
...>     data: [%{name: "a", value: 3}, %{name: "b", value: 5}],
...>     x: & &1.name,
...>     y: & &1.value
...>   })
iex> design.frames.main.scales
%{x: %{kind: :band, padding: 0.1}, y: %{kind: :linear, domain: [0, :auto]}}
iex> hd(design.marks).channels
%{x0: :x, x1: :x, y0: 0, y1: :y}
iex> {:ok, _chart} = Visualize.Chart.from_map(design)
iex> Visualize.Chart.Presets.sources(
...>   :bar_chart,
...>   %{data: [%{name: "a", value: 3}], x: & &1.name, y: & &1.value}
...> )
%{data: [%{x: "a", y: 3}]}