Vega-lite: Sort Property of Mark Not Working

[ayush29feb]

Sort property seems to be broken for the example in the docs.

{
  "$schema": "https://vega.github.io/schema/vega-lite/v2.json",
  "data": {"url": "data/cars.json"},
  "mark": "tick",
  "encoding": {
    "x": {"field": "Horsepower", "type": "quantitative", "sort": "descending"}
  }
}

[domoritz]

Hmm, in this case we should reverse the scale, right?

[ayush29feb]

Yes, at least thats what the documentation says. I am using the online editor https://vega.github.io/new-editor/?mode=vega-lite

[g3o2]

Does sort make sense at all for quantitative given the existence of scale.reverse?

[kanitw]

@g3o2 -- good point. I think there are distinction between scale.reverse and scale sort order in Vega. We should add reverse and correctly distinguish their behaviors.

[g3o2]

It is only now that I've realised that there is indeed no scale.reverse in vega-lite :-)

[kanitw]

@g3o2 Previously sort: "descending" maps to reverse in the underlying Vega. However, there is a case where they are different and thus we no longer map sort order to reverse. We still need to add reverse back.

[kanitw]

Fixed in https://github.com/vega/vega-lite/pull/2545

[ayush29feb]

@kanitw is it updated in https://vega.github.io/new-editor/?mode=vega-lite?

[kanitw]

Not yet -- that will require a release.