Adding non channel items results in an error

[Martin Feckie]

If I try add view (https://vega.github.io/vega-lite/docs/spec.html for configuring background of the chart https://vega.github.io/vega-lite/docs/spec.html#view-background) to the spec like this

      |> VegaLite.encode(:view,
        fill: "#f3f3f3"
      )

it results in an error unknown channel, expected one of :x, ...

We are limited by this collection of known channels:

https://github.com/livebook-dev/vega_lite/blob/v0.1.6/lib/vega_lite.ex#L374-L388

The workaround I can do is

      |> VegaLite.to_spec()
      |> Map.put("view", %{fill: "#f3f3f2"})

Would there be place for a non-channel function for adding to the spec?

[Jonatan Kłosko]

Hey @mfeckie! You can pass arbitrary top-level properties when creating the struct, in this case:

VegaLite.new(view: [fill: "#f3f3f2"])

Is this what you are looking for?

[Martin Feckie]

Perfect, thanks!