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Vega donut chart with centered rotated labels https://bl.ocks.org/betafcc/3125c2287224b86b98e83ae2ebdd8fa0
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| [ | |
| {"letter": "A", "number": 4}, | |
| {"letter": "B", "number": 6}, | |
| {"letter": "C", "number": 10}, | |
| {"letter": "D", "number": 3}, | |
| {"letter": "E", "number": 7}, | |
| {"letter": "F", "number": 8} | |
| ] |
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://cdn.jsdelivr.net/npm/vega@4"></script> | |
| <script src="https://cdn.jsdelivr.net/npm/[email protected]"></script> | |
| <script src="https://cdn.jsdelivr.net/npm/vega-embed@3"></script> | |
| </head> | |
| <body> | |
| <div id="vis"></div> | |
| <script> | |
| vegaEmbed('#vis', 'spec.json', { | |
| defaultStyle: true, | |
| renderer: 'svg' | |
| }) | |
| .catch(console.warn); | |
| </script> | |
| </body> |
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| { | |
| "$schema": "https://vega.github.io/schema/vega/v4.json", | |
| "autosize": "pad", | |
| "width": 200, | |
| "height": 200, | |
| "data": [ | |
| { | |
| "url": "data.json", | |
| "name": "table", | |
| "transform": [ | |
| { | |
| "type": "pie", | |
| "field": "number" | |
| }, | |
| { | |
| "type": "formula", | |
| "expr": "(datum.startAngle + datum.endAngle) / 2", | |
| "as": "midAngle" | |
| } | |
| ] | |
| } | |
| ], | |
| "scales": [ | |
| { | |
| "name": "color", | |
| "type": "ordinal", | |
| "domain": {"data": "table", "field": "letter"}, | |
| "range": {"scheme": "category20"} | |
| } | |
| ], | |
| "marks": [ | |
| { | |
| "from": {"data": "table"}, | |
| "type": "arc", | |
| "encode": { | |
| "enter": { | |
| "x": {"signal": "width / 2"}, | |
| "y": {"signal": "height / 2"}, | |
| "startAngle": {"field": "startAngle"}, | |
| "endAngle": {"field": "endAngle"}, | |
| "fill": {"field": "letter", "scale": "color"}, | |
| "innerRadius": {"signal": "width / 3"}, | |
| "outerRadius": {"signal": "width / 2"} | |
| } | |
| } | |
| }, | |
| { | |
| "from": {"data": "table"}, | |
| "type": "text", | |
| "encode": { | |
| "enter": { | |
| "align": {"value": "center"}, | |
| "angle": {"field": "midAngle", "mult": "180 / Math.PI"}, | |
| "baseline": {"value": "middle"}, | |
| "radius": {"signal": "(width / 2 + width / 3) / 2"}, | |
| "text": {"field": "letter"}, | |
| "theta": {"field": "midAngle"}, | |
| "x": {"signal": "width / 2"}, | |
| "y": {"signal": "height / 2"} | |
| } | |
| } | |
| } | |
| ] | |
| } |
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