bar_grouped_facet_independent_scale.vg.json

{
  "$schema": "https://vega.github.io/schema/vega/v5.json",
  "background": "white",
  "padding": 5,
  "data": [
    {
      "name": "source_0",
      "values": [
        {"category": "A", "group": "x", "value": 0.1},
        {"category": "A", "group": "y", "value": 0.6},
        {"category": "A", "group": "z", "value": 0.9},
        {"category": "B", "group": "x", "value": 0.7},
        {"category": "B", "group": "y", "value": 0.2},
        {"category": "C", "group": "x", "value": 0.6}
      ]
    },
    {
      "name": "data_0",
      "source": "source_0",
      "transform": [
        {
          "type": "stack",
          "groupby": ["group", "category"],
          "field": "value",
          "sort": {"field": [], "order": []},
          "as": ["value_start", "value_end"],
          "offset": "zero"
        },
        {
          "type": "filter",
          "expr": "isValid(datum[\"value\"]) && isFinite(+datum[\"value\"])"
        }
      ]
    },
    {
      "name": "column_domain",
      "source": "data_0",
      "transform": [
        {
          "type": "aggregate",
          "groupby": ["category"],
          "fields": ["group"],
          "ops": ["distinct"],
          "as": ["distinct_group"]
        }
      ]
    }
  ],
  "signals": [
    {"name": "child_x_step", "value": 20},
    {"name": "child_height", "value": 200}
  ],
  "layout": {
    "padding": 20,
    "titleAnchor": {"column": "end"},
    "offset": {"columnTitle": 10},
    "columns": {"signal": "length(data('column_domain'))"},
    "bounds": "full",
    "align": "none"
  },
  "marks": [
    {
      "name": "column-title",
      "type": "group",
      "role": "column-title",
      "title": {
        "text": "category",
        "style": "guide-title",
        "orient": "bottom",
        "offset": 10
      }
    },
    {
      "name": "row_header",
      "type": "group",
      "role": "row-header",
      "encode": {"update": {"height": {"signal": "child_height"}}},
      "axes": [
        {
          "scale": "y",
          "orient": "left",
          "grid": false,
          "title": "value",
          "labelOverlap": true,
          "tickCount": {"signal": "ceil(child_height/40)"},
          "zindex": 0
        }
      ]
    },
    {
      "name": "column_footer",
      "type": "group",
      "role": "column-footer",
      "from": {"data": "column_domain"},
      "sort": {"field": "datum[\"category\"]", "order": "ascending"},
      "title": {
        "text": {
          "signal": "isValid(parent[\"category\"]) ? parent[\"category\"] : \"\"+parent[\"category\"]"
        },
        "style": "guide-label",
        "frame": "group",
        "orient": "bottom",
        "offset": 10
      },
      "encode": {
        "update": {
          "width": {
            "signal": "bandspace(datum[\"distinct_group\"], 0.1, 0.05) * child_x_step"
          }
        }
      }
    },
    {
      "name": "cell",
      "type": "group",
      "style": "cell",
      "from": {
        "facet": {
          "name": "facet",
          "data": "data_0",
          "groupby": ["category"],
          "aggregate": {
            "fields": ["group"],
            "ops": ["distinct"],
            "as": ["distinct_group"]
          }
        }
      },
      "sort": {"field": ["datum[\"category\"]"], "order": ["ascending"]},
      "encode": {
        "update": {
          "width": {
            "signal": "bandspace(datum[\"distinct_group\"], 0.1, 0.05) * child_x_step"
          },
          "height": {"signal": "child_height"}
        }
      },
      "marks": [
        {
          "name": "child_marks",
          "type": "rect",
          "style": ["bar"],
          "from": {"data": "facet"},
          "encode": {
            "update": {
              "fill": {"scale": "color", "field": "group"},
              "ariaRoleDescription": {"value": "bar"},
              "description": {
                "signal": "\"group: \" + (isValid(datum[\"group\"]) ? datum[\"group\"] : \"\"+datum[\"group\"]) + \"; value: \" + (format(datum[\"value\"], \"\"))"
              },
              "x": {"scale": "child_x", "field": "group"},
              "width": {"signal": "max(0.25, bandwidth('child_x'))"},
              "y": {"scale": "y", "field": "value_end"},
              "y2": {"scale": "y", "field": "value_start"}
            }
          }
        }
      ],
      "scales": [
        {
          "name": "child_x",
          "type": "band",
          "domain": {"data": "facet", "field": "group", "sort": true},
          "range": {"step": {"signal": "child_x_step"}},
          "paddingInner": 0.1,
          "paddingOuter": 0.05
        }
      ],
      "axes": [
        {
          "scale": "y",
          "orient": "left",
          "gridScale": "child_x",
          "grid": true,
          "tickCount": {"signal": "ceil(child_height/40)"},
          "domain": false,
          "labels": false,
          "aria": false,
          "maxExtent": 0,
          "minExtent": 0,
          "ticks": false,
          "zindex": 0
        }
      ]
    }
  ],
  "scales": [
    {
      "name": "y",
      "type": "linear",
      "domain": {"data": "data_0", "fields": ["value_start", "value_end"]},
      "range": [{"signal": "child_height"}, 0],
      "nice": true,
      "zero": true
    },
    {
      "name": "color",
      "type": "ordinal",
      "domain": {"data": "data_0", "field": "group", "sort": true},
      "range": "category"
    }
  ],
  "legends": [{"fill": "color", "symbolType": "square", "title": "group"}],
  "config": {"style": {"cell": {"stroke": "transparent"}}}
}