Bubble charts encode data in the area of circles. Although less perceptually-accurate than bar charts, they can pack hundreds of values into a small space. Implementation based on work by Jeff Heer. Data shows the Flare class hierarchy, also courtesy Jeff Heer.
Bubble Chart
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{ | |
"children":[ | |
{ | |
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{ | |
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"name":"Asian FX", | |
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"size":-26.74, | |
"description":"Asian FX", | |
"name2":"Foreign Exchange", | |
"var10d":-23.37, | |
"$angularWidth":18.16, | |
"$area":18.16, | |
"$color":"#FFB100", | |
"es":-26.74, | |
"days":-23.37, | |
"level":4 | |
}, | |
"id":115400, | |
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{ | |
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"name":"LATAM FX", | |
"data":{ | |
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"size":-34.9, | |
"description":"LATAM FX", | |
"name2":"Foreign Exchange", | |
"var10d":-33.06, | |
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"$area":22.4, | |
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"id":115200, | |
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{ | |
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"name":"European FX", | |
"data":{ | |
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"size":-65.11, | |
"description":"European FX", | |
"name2":"Foreign Exchange", | |
"var10d":-59.08, | |
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"name":"Developing FX", | |
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"name":"US", | |
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"name":"Dev Equities", | |
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"name":"Asian Equities", | |
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"name":"Developing Retail", | |
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"children":[ | |
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"var10d":-37.35, | |
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"data":{ | |
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"var10d":-952.74, | |
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"es":-1078.87, | |
"days":-952.74, | |
"level":1 | |
}, | |
"id":100000, | |
"parentId":0 | |
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
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}); | |
// Returns a flattened hierarchy containing all leaf nodes under the root. | |
function classes(root) { | |
var classes = []; | |
function recurse(name, node) { | |
if (node.children) node.children.forEach(function(child) { recurse(node.name, child); }); | |
else classes.push({packageName: name, className: node.name, value: 100}); | |
} | |
recurse(null, root); | |
return {children: classes}; | |
} | |
d3.select(self.frameElement).style("height", diameter + "px"); | |
</script> |
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