{
  "$schema": "https://vega.github.io/schema/vega/v5.json",
  "description": "A diverging stacked bar chart for sentiments towards a set of eight questions, displayed as percentages with neutral responses straddling the 0% mark",
  "background": "white",
  "padding": 5,
  "width": 200,
  "style": "cell",
  "data": [
    {
      "name": "source_0",
      "values": [
        {
          "question": "Question 1",
          "type": "Strongly disagree",
          "value": 24,
          "percentage": 0.7
        },
        {
          "question": "Question 1",
          "type": "Disagree",
          "value": 294,
          "percentage": 9.1
        },
        {
          "question": "Question 1",
          "type": "Neither agree nor disagree",
          "value": 594,
          "percentage": 18.5
        },
        {
          "question": "Question 1",
          "type": "Agree",
          "value": 1927,
          "percentage": 59.9
        },
        {
          "question": "Question 1",
          "type": "Strongly agree",
          "value": 376,
          "percentage": 11.7
        },
        {
          "question": "Question 2",
          "type": "Strongly disagree",
          "value": 2,
          "percentage": 18.2
        },
        {
          "question": "Question 2",
          "type": "Disagree",
          "value": 2,
          "percentage": 18.2
        },
        {
          "question": "Question 2",
          "type": "Neither agree nor disagree",
          "value": 0,
          "percentage": 0
        },
        {
          "question": "Question 2",
          "type": "Agree",
          "value": 7,
          "percentage": 63.6
        },
        {
          "question": "Question 2",
          "type": "Strongly agree",
          "value": 11,
          "percentage": 0
        },
        {
          "question": "Question 3",
          "type": "Strongly disagree",
          "value": 2,
          "percentage": 20
        },
        {
          "question": "Question 3",
          "type": "Disagree",
          "value": 0,
          "percentage": 0
        },
        {
          "question": "Question 3",
          "type": "Neither agree nor disagree",
          "value": 2,
          "percentage": 20
        },
        {
          "question": "Question 3",
          "type": "Agree",
          "value": 4,
          "percentage": 40
        },
        {
          "question": "Question 3",
          "type": "Strongly agree",
          "value": 2,
          "percentage": 20
        },
        {
          "question": "Question 4",
          "type": "Strongly disagree",
          "value": 0,
          "percentage": 0
        },
        {
          "question": "Question 4",
          "type": "Disagree",
          "value": 2,
          "percentage": 12.5
        },
        {
          "question": "Question 4",
          "type": "Neither agree nor disagree",
          "value": 1,
          "percentage": 6.3
        },
        {
          "question": "Question 4",
          "type": "Agree",
          "value": 7,
          "percentage": 43.8
        },
        {
          "question": "Question 4",
          "type": "Strongly agree",
          "value": 6,
          "percentage": 37.5
        },
        {
          "question": "Question 5",
          "type": "Strongly disagree",
          "value": 0,
          "percentage": 0
        },
        {
          "question": "Question 5",
          "type": "Disagree",
          "value": 1,
          "percentage": 4.2
        },
        {
          "question": "Question 5",
          "type": "Neither agree nor disagree",
          "value": 3,
          "percentage": 12.5
        },
        {
          "question": "Question 5",
          "type": "Agree",
          "value": 16,
          "percentage": 66.7
        },
        {
          "question": "Question 5",
          "type": "Strongly agree",
          "value": 4,
          "percentage": 16.7
        },
        {
          "question": "Question 6",
          "type": "Strongly disagree",
          "value": 1,
          "percentage": 6.3
        },
        {
          "question": "Question 6",
          "type": "Disagree",
          "value": 1,
          "percentage": 6.3
        },
        {
          "question": "Question 6",
          "type": "Neither agree nor disagree",
          "value": 2,
          "percentage": 12.5
        },
        {
          "question": "Question 6",
          "type": "Agree",
          "value": 9,
          "percentage": 56.3
        },
        {
          "question": "Question 6",
          "type": "Strongly agree",
          "value": 3,
          "percentage": 18.8
        },
        {
          "question": "Question 7",
          "type": "Strongly disagree",
          "value": 0,
          "percentage": 0
        },
        {
          "question": "Question 7",
          "type": "Disagree",
          "value": 0,
          "percentage": 0
        },
        {
          "question": "Question 7",
          "type": "Neither agree nor disagree",
          "value": 1,
          "percentage": 20
        },
        {
          "question": "Question 7",
          "type": "Agree",
          "value": 4,
          "percentage": 80
        },
        {
          "question": "Question 7",
          "type": "Strongly agree",
          "value": 0,
          "percentage": 0
        },
        {
          "question": "Question 8",
          "type": "Strongly disagree",
          "value": 0,
          "percentage": 0
        },
        {
          "question": "Question 8",
          "type": "Disagree",
          "value": 0,
          "percentage": 0
        },
        {
          "question": "Question 8",
          "type": "Neither agree nor disagree",
          "value": 0,
          "percentage": 0
        },
        {
          "question": "Question 8",
          "type": "Agree",
          "value": 0,
          "percentage": 0
        },
        {
          "question": "Question 8",
          "type": "Strongly agree",
          "value": 2,
          "percentage": 100
        }
      ]
    },
    {
      "name": "data_0",
      "source": "source_0",
      "transform": [
        {
          "type": "formula",
          "expr": "if(datum.type === 'Strongly disagree',-2,0) + if(datum.type==='Disagree',-1,0) + if(datum.type =='Neither agree nor disagree',0,0) + if(datum.type ==='Agree',1,0) + if(datum.type ==='Strongly agree',2,0)",
          "as": "q_order"
        },
        {
          "type": "formula",
          "expr": "if(datum.type === 'Disagree' || datum.type === 'Strongly disagree', datum.percentage,0) + if(datum.type === 'Neither agree nor disagree', datum.percentage / 2,0)",
          "as": "signed_percentage"
        },
        {
          "type": "stack",
          "groupby": ["question"],
          "field": "percentage",
          "sort": {"field": [], "order": []},
          "as": ["v1", "v2"],
          "offset": "zero"
        },
        {
          "type": "joinaggregate",
          "as": ["offset"],
          "ops": ["sum"],
          "fields": ["signed_percentage"],
          "groupby": ["question"]
        },
        {"type": "formula", "expr": "datum.v1 - datum.offset", "as": "nx"},
        {"type": "formula", "expr": "datum.v2 - datum.offset", "as": "nx2"},
        {
          "type": "filter",
          "expr": "isValid(datum[\"nx\"]) && isFinite(+datum[\"nx\"])"
        }
      ]
    }
  ],
  "signals": [
    {"name": "y_step", "value": 20},
    {
      "name": "height",
      "update": "bandspace(domain('y').length, 0.1, 0.05) * y_step"
    }
  ],
  "marks": [
    {
      "name": "marks",
      "type": "rect",
      "style": ["bar"],
      "from": {"data": "data_0"},
      "encode": {
        "update": {
          "fill": {"scale": "color", "field": "type"},
          "ariaRoleDescription": {"value": "bar"},
          "description": {
            "signal": "\"Percentage: \" + (format(datum[\"nx\"], \"\")) + \"; Question: \" + (isValid(datum[\"question\"]) ? datum[\"question\"] : \"\"+datum[\"question\"]) + \"; nx2: \" + (format(datum[\"nx2\"], \"\")) + \"; Response: \" + (isValid(datum[\"type\"]) ? datum[\"type\"] : \"\"+datum[\"type\"])"
          },
          "x": {"scale": "x", "field": "nx"},
          "x2": {"scale": "x", "field": "nx2"},
          "y": {"scale": "y", "field": "question"},
          "height": {"scale": "y", "band": 1}
        }
      }
    }
  ],
  "scales": [
    {
      "name": "x",
      "type": "linear",
      "domain": {"data": "data_0", "fields": ["nx", "nx2"]},
      "range": [0, {"signal": "width"}],
      "nice": true,
      "zero": true
    },
    {
      "name": "y",
      "type": "band",
      "domain": {"data": "data_0", "field": "question", "sort": true},
      "range": {"step": {"signal": "y_step"}},
      "paddingInner": 0.1,
      "paddingOuter": 0.05
    },
    {
      "name": "color",
      "type": "ordinal",
      "domain": [
        "Strongly disagree",
        "Disagree",
        "Neither agree nor disagree",
        "Agree",
        "Strongly agree"
      ],
      "range": ["#c30d24", "#f3a583", "#cccccc", "#94c6da", "#1770ab"]
    }
  ],
  "axes": [
    {
      "scale": "x",
      "orient": "bottom",
      "gridScale": "y",
      "grid": true,
      "tickCount": {"signal": "ceil(width/40)"},
      "domain": false,
      "labels": false,
      "aria": false,
      "maxExtent": 0,
      "minExtent": 0,
      "ticks": false,
      "zindex": 0
    },
    {
      "scale": "x",
      "orient": "bottom",
      "grid": false,
      "title": "Percentage",
      "labelFlush": true,
      "labelOverlap": true,
      "tickCount": {"signal": "ceil(width/40)"},
      "zindex": 0
    },
    {
      "scale": "y",
      "orient": "left",
      "grid": false,
      "title": "Question",
      "domain": false,
      "minExtent": 60,
      "offset": 5,
      "ticks": false,
      "zindex": 0
    }
  ],
  "legends": [{"title": "Response", "fill": "color", "symbolType": "square"}]
}