Quick implementation of a slope chart, not to represent changes over time but to emulate Ben Fry's piece Salaries vs Performance
Todo: Values should be ranked to avoid overlapping
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March 2, 2019 06:49
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Slopechart with vega.js
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| <html> | |
| <head> | |
| <title></title> | |
| <script src="https://cdn.jsdelivr.net/npm/vega@4"></script> | |
| <script src="https://cdn.jsdelivr.net/npm/vega-embed@3"></script> | |
| <style> | |
| body { | |
| font-family: sans-serif; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="vis" style="height: 500px;"></div> | |
| </body> | |
| <script type="text/javascript"> | |
| vegaEmbed('#vis', 'vega-spec.json', {defaultStyle: true}); | |
| </script> | |
| </html> |
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| { | |
| "$schema": "https://vega.github.io/schema/vega/v5.json", | |
| "description": "todo", | |
| "width": 500, | |
| "height": 500, | |
| "signals": [ | |
| { "name": "paddingLeft", "value": 100}, | |
| { "name": "paddingRight", "update": "width - 75"} | |
| ], | |
| "autosize": { | |
| "type": "fit", | |
| "contains": "padding" | |
| }, | |
| "data": [ | |
| { | |
| "name": "source", | |
| "values": [ | |
| { | |
| "key": "Boston", | |
| "value": 17, | |
| "amount": 189639 | |
| }, | |
| { | |
| "key": "LA Angels", | |
| "value": 58, | |
| "amount": 143026 | |
| }, | |
| { | |
| "key": "Cleveland", | |
| "value": 14, | |
| "amount": 106460 | |
| }, | |
| { | |
| "key": "Kansas City", | |
| "value": 1, | |
| "amount": 67116 | |
| }, | |
| { | |
| "key": "Tampa Bay", | |
| "value": 36, | |
| "amount": 87759 | |
| }, | |
| { | |
| "key": "Oakland", | |
| "value": 50, | |
| "amount": 71438 | |
| }, | |
| { | |
| "key": "Atlanta", | |
| "value": 29, | |
| "amount": 93286 | |
| }, | |
| { | |
| "key": "Florida", | |
| "value": 54, | |
| "amount": 52067 | |
| }, | |
| { | |
| "key": "Pittsburgh", | |
| "value": 33, | |
| "amount": 39537 | |
| }, | |
| { | |
| "key": "Baltimore", | |
| "value": 42, | |
| "amount": 110454 | |
| }, | |
| { | |
| "key": "Colorado", | |
| "value": 26, | |
| "amount": 120078 | |
| }, | |
| { | |
| "key": "Settle", | |
| "value": 22, | |
| "amount": 25407 | |
| }, | |
| { | |
| "key": "Cincinnati", | |
| "value": 10, | |
| "amount": 24123 | |
| }, | |
| { | |
| "key": "Watch me", | |
| "value": 5, | |
| "amount": 3507 | |
| } | |
| ] | |
| }, | |
| { | |
| "name" : "props", | |
| "values": [{ "prop" : "value"}, {"prop" :"amount"}] | |
| } | |
| ], | |
| "scales": [ | |
| { | |
| "name": "x", | |
| "type": "ordinal", | |
| "domain": { | |
| "data": "props", | |
| "field" : "prop" | |
| }, | |
| "range": { | |
| "signal": "[paddingLeft, paddingRight]" | |
| } | |
| }, | |
| { | |
| "name": "y1", | |
| "type": "linear", | |
| "nice": true, | |
| "zero": true, | |
| "domain": { | |
| "data": "source", | |
| "field": "value" | |
| }, | |
| "range": "height" | |
| }, | |
| { | |
| "name": "y2", | |
| "type": "linear", | |
| "nice": true, | |
| "zero": true, | |
| "domain": { | |
| "data": "source", | |
| "field": "amount" | |
| }, | |
| "range": "height" | |
| } | |
| ], | |
| "marks": [ | |
| { | |
| "type": "rule", | |
| "from": { | |
| "data": "source" | |
| }, | |
| "encode": { | |
| "update": { | |
| "x": { | |
| "scale": "x", | |
| "value": "value" | |
| }, | |
| "x2": { | |
| "scale": "x", | |
| "value": "amount" | |
| }, | |
| "y": { | |
| "scale": "y1", | |
| "field": "value" | |
| }, | |
| "y2": { | |
| "scale": "y2", | |
| "field": "amount" | |
| }, | |
| "strokeWidth": { | |
| "value": 0.75 | |
| }, | |
| "opacity":{ | |
| "value": 0.5 | |
| }, | |
| "tooltip": { | |
| "signal": "datum" | |
| } | |
| } | |
| } | |
| }, | |
| { | |
| "type": "text", | |
| "from": { | |
| "data": "source" | |
| }, | |
| "encode": { | |
| "update": { | |
| "text": { | |
| "field": "key" | |
| }, | |
| "x": { | |
| "signal": "paddingLeft" | |
| }, | |
| "y": { | |
| "scale": "y1", | |
| "field": "value" | |
| }, | |
| "align":{ | |
| "value": "right" | |
| }, | |
| "dx": { | |
| "value": -35 | |
| }, | |
| "baseline":{ | |
| "value": "middle" | |
| } | |
| } | |
| } | |
| }, | |
| { | |
| "type": "text", | |
| "from": { | |
| "data": "source" | |
| }, | |
| "encode": { | |
| "update": { | |
| "text": { | |
| "field": "value" | |
| }, | |
| "x": { | |
| "signal": "paddingLeft" | |
| }, | |
| "y": { | |
| "scale": "y1", | |
| "field": "value" | |
| }, | |
| "align":{ | |
| "value": "right" | |
| }, | |
| "dx": { | |
| "value": -5 | |
| }, | |
| "baseline":{ | |
| "value": "middle" | |
| } | |
| } | |
| } | |
| }, | |
| { | |
| "type": "text", | |
| "from": { | |
| "data": "source" | |
| }, | |
| "encode": { | |
| "update": { | |
| "text": { | |
| "signal": "format(datum.amount, ',.2f') + ' €'" | |
| }, | |
| "x": { | |
| "signal": "paddingRight" | |
| }, | |
| "y": { | |
| "scale": "y2", | |
| "field": "amount" | |
| }, | |
| "align":{ | |
| "value": "left" | |
| }, | |
| "dx": { | |
| "value": 5 | |
| }, | |
| "baseline":{ | |
| "value": "middle" | |
| } | |
| } | |
| } | |
| } | |
| ], | |
| "config": {} | |
| } |
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