Draft for making custom visual designs with vega.js
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Custom visuals designs with vega.js (I)
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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/vega-embed@3"></script> | |
| </head> | |
| <body> | |
| <div id="vis"></div> | |
| <script> | |
| const spec = "spec.vg.json"; | |
| vegaEmbed('#vis', spec, {defaultStyle: true}); | |
| </script> | |
| </body> |
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| { | |
| "$schema": "https://vega.github.io/schema/vega/v4.json", | |
| "height": 400, | |
| "padding": 5, | |
| "config" : { | |
| "axis" : { | |
| "domain" : true | |
| } | |
| }, | |
| "title": { | |
| "text" : "Percentage of tender saving", | |
| "fontSize" : 20, | |
| "offset" : 50 | |
| }, | |
| "signals": [ | |
| {"name": "chartWidth", "value": 350}, | |
| {"name": "chartPad", "value": 20}, | |
| {"name": "width", "update": "2 * chartWidth + chartPad"}, | |
| {"name": "companyOffset", "value": 20}, | |
| {"name": "labelMinimalHeight", "value": 20}, | |
| {"name": "paddingTop", "value" : 40}, | |
| { | |
| "name": "totalHeight", | |
| "update": "[(extent[1] - extent[0])*labelMinimalHeight, paddingTop]" | |
| } | |
| ], | |
| "data": [ | |
| { | |
| "name" : "candidate_types", | |
| "values" : [ | |
| { "name" : "winner" }, | |
| { "name" : "non winners" } | |
| ] | |
| }, | |
| { | |
| "name": "candidates", | |
| "values": [ | |
| { "name": "C.G.A. srl", | |
| "percentage": 6.07, | |
| "winner" : false | |
| }, | |
| { "name": "Castedil srl", | |
| "percentage": 40.99, | |
| "winner" : false | |
| }, | |
| { "name": "Impresa Costruzioni Francesco Cavallo", | |
| "percentage": 16.11, | |
| "winner" : false | |
| }, | |
| { | |
| "name": "Impresa Costruzioni Scavi e Movimento Terra Pacella Antonio", | |
| "percentage": 33.52, | |
| "winner" : true | |
| }, | |
| { "name": "L.T.R. Asphalt srl", | |
| "percentage": 40.99, | |
| "winner" : false | |
| }, | |
| { | |
| "name": "La Nuova Edil Strade di Bochicchio Angelo", | |
| "percentage": 27.48, | |
| "winner" : false | |
| }, | |
| { "name": "Lucana Scavi di Friguglietti Giuseppe", | |
| "percentage": 34, | |
| "winner" : false | |
| }, | |
| { "name": "Madonna Costruzioni srl", | |
| "percentage": 33.17, | |
| "winner" : false | |
| }, | |
| { "name": "Pascale Prefabbricati srl", | |
| "percentage": 38.32, | |
| "winner" : false | |
| }, | |
| { "name": "Ventra Antonio srl", | |
| "percentage": 41.84, | |
| "winner" : false | |
| } | |
| ], | |
| "transform": [ | |
| {"type": "extent", "field": "percentage", "signal": "extent"} | |
| ] | |
| } | |
| ], | |
| "scales": [ | |
| { | |
| "name": "y", | |
| "type": "linear", | |
| "range": {"signal": "totalHeight"}, | |
| "round": true, | |
| "domain": {"data": "candidates", "field": "percentage"}, | |
| "zero": false | |
| } | |
| ], | |
| "axes": [ | |
| { "orient": "left", | |
| "scale": "y", | |
| "labelPadding" : -20, | |
| "ticks" : true, | |
| "domainColor" : "#e0e0e0", | |
| "grid" : false, | |
| "offset": { | |
| "signal": "-width/2" | |
| }, | |
| "encode" : { | |
| "labels" : { | |
| "update" : { | |
| "text" : { | |
| "signal" : "datum.value + '%'" | |
| } | |
| } | |
| } | |
| } | |
| } | |
| ], | |
| "marks": [ | |
| { | |
| "type": "text", | |
| "from": {"data": "candidates"}, | |
| "encode": { | |
| "enter": { | |
| "x": {"signal": "(datum.winner)? (width/2) - companyOffset : (width/2) + companyOffset"}, | |
| "y": {"scale": "y", "field": "percentage"}, | |
| "text": { | |
| "signal": "(datum.winner) ? (datum.name + ' \u25b6') : ('\u25c0 ' + datum.name)" | |
| }, | |
| "align" : { | |
| "signal" : "(datum.winner)? 'right' : 'left'" | |
| }, | |
| "fontWeight" : { | |
| "signal" : "(datum.winner)? 'bold' : 'normal'" | |
| }, | |
| "fontSize" : { | |
| "signal" : "(datum.winner)? 12 : 12" | |
| }, | |
| "fill" : {"signal" : "(datum.winner)? '#333' : '#444'" } | |
| } | |
| } | |
| }, | |
| { | |
| "type" : "text", | |
| "from" : { | |
| "data" : "candidate_types" | |
| }, | |
| "encode" : { | |
| "enter" : { | |
| "x" : { | |
| "signal" : "(datum.name == 'winner')? (width/2) - (width/4) : (width/2) + (width/4)" | |
| }, | |
| "y" : { | |
| "signal" : "0" | |
| }, | |
| "text" : { | |
| "signal" : "datum.name" | |
| }, | |
| "fontWeight" : { "value" : "bold"}, | |
| "fontSize" : {"value" : 14} | |
| } | |
| } | |
| } | |
| ] | |
| } |
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