Deneb - Trellis of Trellis

[patBear]

Is it possible to make a trellis of a trellis in Deneb?  To help illustrate, I'll use the movie dataset as a sample along with this code.  I get a warning in Deneb though a visual does render.  In the visual, I have big gaps between Major Genres that may represent missing Genre-CreateType combinations.  Is there a way to remove these gaps and add in horizontal rules that extend left through the CreateType and Genre names?  In short, are there options to clean up the look (the general layout; I'm not concerned about the jumble of overlapping titles since my actual dataset is much smaller)?  Thanks! @dm-p  @KerKol 

{
  "data": {"name": "dataset"},
  "transform": [
    {"calculate": "1", "as": "one"},
    {
      "stack": "one",
      "groupby": [
        "Major Genre",
        "Creative Type",
        "MPAA Rating"
      ],
      "sort": [
        {
          "field": "barSort",
          "order": "descending"
        }
      ],
      "as": ["ymin", "ymax"]
    },
    {
      "calculate": "(datum.ymin + datum.ymax)/2",
      "as": "ymid"
    }
  ],
  "facet": {
    "row": {
      "field": "Major Genre",
      "title": null
    }
  },
  "spec": {
    "facet": {
      "row": {
        "field": "Creative Type",
        "title": null
      }
    },
    "spec": {
      "width": 1000,
      "layer": [
        {
          "mark": {"type": "bar"},
          "encoding": {
            "y": {
              "field": "ymin",
              "type": "quantitative",
              "axis": {"title": null}
            },
            "y2": {"field": "ymax"}
          }
        },
        {
          "mark": {"type": "text"},
          "encoding": {
            "text": {"field": "Title"},
            "y": {
              "field": "ymid",
              "type": "quantitative"
            }
          }
        },
        {
          "mark": {
            "type": "text",
            "dy": -10
          },
          "encoding": {
            "text": {
              "field": "Title",
              "type": "quantitative",
              "aggregate": "count"
            },
            "y": {
              "field": "Title",
              "type": "quantitative",
              "aggregate": "count"
            }
          }
        }
      ],
      "encoding": {
        "x": {
          "field": "MPAA Rating",
          "type": "nominal",
          "axis": {
            "title": null,
            "labelAngle": 0
          }
        }
      }
    }
  }
}

[KerKol]

I'm struggling to follow.

Are you able to draw what you want to achieve?

[KerKol · Accepted solution]

I don't know if this helps?

Set spacing to 5, and view fill colour to grey

"spec": {
"facet": {
"row": {
"field": "Creative Type",
"title": null
}
}, "spacing" : 5,

"view": {"stroke": "black", "fill": "lightgrey"},

[patBear]

@KerKol thanks for the tips on spacing and view, they definitely improve the look.  I'm still getting large gaps between genres (this screenshot shows Adventure to Black Comedy), and my Deneb code still has warnings that seem to say spec should not contain facet ("spec": {"facet": ...}}).  I came up with a workaround, and with the addition of spacing and view, I'm quite happy with the look even though I'm still intrigued about the use of multiple facets.

[v-jayw-msft]

Hi @patBear ,

This is the relevant information I can find, I hope it helps you.

Declarative Visualization in Power BI | Deneb (deneb-viz.github.io)

Best Regards,

Jay