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arc_radial.vg.json
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arc_radial.vg.json
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{
"$schema": "https://vega.github.io/schema/vega/v5.json",
"description": "A simple radial chart with embedded data.",
"background": "white",
"padding": 5,
"width": 200,
"height": 200,
"style": "view",
"data": [
{"name": "source_0", "values": [12, 23, 47, 6, 52, 19]},
{
"name": "data_1",
"source": "source_0",
"transform": [
{
"type": "stack",
"groupby": [],
"field": "data",
"sort": {"field": ["data"], "order": ["ascending"]},
"as": ["data_start", "data_end"],
"offset": "zero"
},
{
"type": "filter",
"expr": "isValid(datum[\"data\"]) && isFinite(+datum[\"data\"])"
}
]
},
{
"name": "data_2",
"source": "source_0",
"transform": [
{
"type": "stack",
"groupby": [],
"field": "data",
"sort": {
"field": ["data", "data"],
"order": ["ascending", "ascending"]
},
"as": ["data_start", "data_end"],
"offset": "zero"
},
{
"type": "filter",
"expr": "isValid(datum[\"data\"]) && isFinite(+datum[\"data\"])"
}
]
}
],
"marks": [
{
"name": "layer_0_marks",
"type": "arc",
"style": ["arc"],
"from": {"data": "data_1"},
"encode": {
"update": {
"stroke": {"value": "#fff"},
"innerRadius": {"value": 20},
"fill": {"scale": "color", "field": "data"},
"description": {
"signal": "\"data: \" + (format(datum[\"data\"], \"\"))"
},
"x": {"signal": "width", "mult": 0.5},
"y": {"signal": "height", "mult": 0.5},
"outerRadius": {"scale": "radius", "field": "data"},
"startAngle": {"scale": "theta", "field": "data_end"},
"endAngle": {"scale": "theta", "field": "data_start"}
}
}
},
{
"name": "layer_1_marks",
"type": "text",
"style": ["text"],
"from": {"data": "data_2"},
"encode": {
"update": {
"fill": {"scale": "color", "field": "data"},
"description": {
"signal": "\"data: \" + (format(datum[\"data\"], \"\"))"
},
"x": {"signal": "width", "mult": 0.5},
"y": {"signal": "height", "mult": 0.5},
"text": {"signal": "format(datum[\"data\"], \"\")"},
"align": {"value": "center"},
"baseline": {"value": "middle"},
"radius": {"scale": "radius", "field": "data", "offset": 10},
"theta": {
"signal": "scale(\"theta\", 0.5 * datum[\"data_start\"] + 0.5 * datum[\"data_end\"])"
}
}
}
}
],
"scales": [
{
"name": "theta",
"type": "linear",
"domain": {
"fields": [
{"data": "data_1", "field": "data_start"},
{"data": "data_1", "field": "data_end"},
{"data": "data_2", "field": "data_start"},
{"data": "data_2", "field": "data_end"}
]
},
"range": [0, 6.283185307179586],
"zero": true
},
{
"name": "radius",
"type": "sqrt",
"domain": {
"fields": [
{"data": "data_1", "field": "data"},
{"data": "data_2", "field": "data"}
]
},
"range": [20, {"signal": "min(width,height)/2"}],
"zero": true
},
{
"name": "color",
"type": "ordinal",
"domain": {
"fields": [
{"data": "data_1", "field": "data"},
{"data": "data_2", "field": "data"}
],
"sort": true
},
"range": "category"
}
]
}