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.
testing with different data
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| text { | |
| font: 10px sans-serif; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var diameter = 960, | |
| format = d3.format(",d"), | |
| color = d3.scale.category20c(); | |
| var bubble = d3.layout.pack() | |
| .sort(null) | |
| .size([diameter, diameter]) | |
| .padding(1.5); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", diameter) | |
| .attr("height", diameter) | |
| .attr("class", "bubble"); | |
| d3.json("test.json", function(error, root) { | |
| var node = svg.selectAll(".node") | |
| .data(bubble.nodes(root) | |
| .filter(function(d) { return !d.children; })) | |
| .enter().append("g") | |
| .attr("class", "node") | |
| .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; }); | |
| node.append("title") | |
| .text(function(d) { return d.name + ": " + format(d.size); }); | |
| node.append("circle") | |
| .attr("r", function(d) { return d.r; }) | |
| .style("fill", function(d) { return color(d.name); }); | |
| node.append("text") | |
| .attr("dy", ".3em") | |
| .style("text-anchor", "middle") | |
| .text(function(d) { return d.className.substring(0, d.r / 3); }); | |
| }); | |
| d3.select(self.frameElement).style("height", diameter + "px"); | |
| </script> |
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| [ | |
| {"name": "A","size":1200}, | |
| {"name": "A","size":1300}, | |
| {"name": "A","size":1400}, | |
| {"name": "A","size":1500}, | |
| {"name": "A","size":1600}, | |
| {"name": "A","size":1700}, | |
| {"name": "A","size":1800}, | |
| {"name": "A","size":1900}, | |
| {"name": "A","size":2100}, | |
| {"name": "A","size":2200}, | |
| {"name": "A","size":2300}, | |
| {"name": "A","size":2400}, | |
| {"name": "A","size":2500}, | |
| {"name": "A","size":2600}, | |
| {"name": "A","size":2700}, | |
| {"name": "A","size":2800}, | |
| {"name": "A","size":2500}, | |
| {"name": "A","size":3000}, | |
| {"name": "A","size":1500}, | |
| {"name": "A","size":200}, | |
| {"name": "A","size":600}, | |
| {"name": "A","size":4000}, | |
| {"name": "A","size":500}, | |
| {"name": "A","size":2000} | |
| ] |
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