Front End Developer. Lens.org
Published
Edited
Sep 11, 2019
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spec = ({
"$schema": "https://vega.github.io/schema/vega/v4.json",
"width": 200,
"height": 200,
"autosize": "fit",
"data": [
{
"name": "table",
"values": [
{"id": "Biology", "field": 4},
{"id": "Chemistry", "field": 8},
{"id": "Computer Science", "field": 2},
{"id": "Programming", "field": 2},
{"id": "Sociology", "field": 8}
],
"transform": [
{"type": "formula", "expr": "datum.id + ': ' + datum.field", "as": "tooltip"},
{
"type": "pie",
"field": "field",
"startAngle": 0,
"endAngle": 6.29,
"sort": true
}
]
}
],
"scales": [
{
"name": "color",
"type": "ordinal",
"domain": {"data": "table", "field": "id"},
"range": {"scheme": "category20c"}
}
],
"marks": [
{
"type": "arc",
"from": {"data": "table"},
"encode": {
"enter": {
"fill": {"scale": "color", "field": "id"},
"x": {"signal": "width / 2"},
"y": {"signal": "height / 2"},
"startAngle": {"field": "startAngle"},
"endAngle": {"field": "endAngle"},
"innerRadius": {"value": 60},
"outerRadius": {"signal": "width / 2"},
"cornerRadius": {"value": 0},
"tooltip": {"field": "tooltip"}
}
}
}
]
})
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