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packed circles - color scale domain example
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| license: CC0-1.0 |
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| <html> | |
| <head> | |
| <title>D3 in Action Chapter 5 - Packed Circles Example</title> | |
| <meta charset="utf-8" /> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js" type="text/JavaScript"></script> | |
| </head> | |
| <style> | |
| svg { | |
| height: 500px; | |
| width: 500px; | |
| border: 1px solid gray; | |
| } | |
| </style> | |
| <body> | |
| <div id="viz"> | |
| <svg> | |
| </svg> | |
| </div> | |
| <div id="controls" /> | |
| </body> | |
| <footer> | |
| <script> | |
| d3.json("tweets.json", function(error,data){ | |
| dataViz(data.tweets) | |
| }); | |
| function dataViz(incData){ | |
| nestedTweets = d3.nest() | |
| .key(function(el) { | |
| return el.user | |
| }) | |
| .entries(incData); | |
| packableTweets = { id: "root", values: nestedTweets } | |
| // var depthScale = d3.scale.category10([0,1,2]) | |
| // not necessary to set the domain explicity | |
| var depthScale = d3.scale.category10(); | |
| exposedData = incData; | |
| packChart = d3.layout.pack(); | |
| packChart.size([500,500]) | |
| .children(function(d){ | |
| return d.values | |
| }) | |
| .value(function(d){ | |
| return 1 | |
| }) | |
| d3.select("svg") | |
| .append("g") | |
| .attr("transform", "translate(0,0)") | |
| .selectAll("circle") | |
| .data(packChart(packableTweets)) | |
| .enter() | |
| .append("circle") | |
| .attr("r", function(d) { | |
| return d.r | |
| }) | |
| .attr("cx", function(d){ | |
| return d.x | |
| }) | |
| .attr("cy", function(d){ | |
| return d.y | |
| }) | |
| .style("fill", function(d){ | |
| return depthScale(d.depth) | |
| }) | |
| .style("stroke", "black") | |
| .style("stroke", "2px") | |
| // we can inspect the domain that is | |
| // built up by applying depthScale() to each | |
| // instance of the current object d | |
| console.log(depthScale.domain()) | |
| } | |
| </script> | |
| </footer> | |
| </html> |
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| { | |
| "tweets": [ | |
| {"user": "Al", "content": "I really love seafood.", "timestamp": " Mon Dec 23 2013 21:30 GMT-0800 (PST)", "retweets": ["Raj","Pris","Roy"], "favorites": ["Sam"]}, | |
| {"user": "Al", "content": "I take that back, this doesn't taste so good.", "timestamp": "Mon Dec 23 2013 21:55 GMT-0800 (PST)", "retweets": ["Roy"], "favorites": []}, | |
| {"user": "Al", "content": "From now on, I'm only eating cheese sandwiches.", "timestamp": "Mon Dec 23 2013 22:22 GMT-0800 (PST)", "retweets": [], "favorites": ["Roy","Sam"]}, | |
| {"user": "Roy", "content": "Great workout!", "timestamp": " Mon Dec 23 2013 7:20 GMT-0800 (PST)", "retweets": [], "favorites": []}, | |
| {"user": "Roy", "content": "Spectacular oatmeal!", "timestamp": " Mon Dec 23 2013 7:23 GMT-0800 (PST)", "retweets": [], "favorites": []}, | |
| {"user": "Roy", "content": "Amazing traffic!", "timestamp": " Mon Dec 23 2013 7:47 GMT-0800 (PST)", "retweets": [], "favorites": []}, | |
| {"user": "Roy", "content": "Just got a ticket for texting and driving!", "timestamp": " Mon Dec 23 2013 8:05 GMT-0800 (PST)", "retweets": [], "favorites": ["Sam", "Sally", "Pris"]}, | |
| {"user": "Pris", "content": "Going to have some boiled eggs.", "timestamp": " Mon Dec 23 2013 18:23 GMT-0800 (PST)", "retweets": [], "favorites": ["Sally"]}, | |
| {"user": "Pris", "content": "Maybe practice some gymnastics.", "timestamp": " Mon Dec 23 2013 19:47 GMT-0800 (PST)", "retweets": [], "favorites": ["Sally"]}, | |
| {"user": "Sam", "content": "@Roy Let's get lunch", "timestamp": " Mon Dec 23 2013 11:05 GMT-0800 (PST)", "retweets": ["Pris"], "favorites": ["Sally", "Pris"]} | |
| ] | |
| } | |
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