This is the code for Chapter 5, Figure 16 from D3.js in Action demonstrating d3.behavior.zoom(). Click and drag the canvas to see more of the dendrogram.
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Ch. 5, Fig. 16 - D3.js in Action
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| <html> | |
| <head> | |
| <title>D3 in Action Chapter 5 - Example 7</title> | |
| <meta charset="utf-8" /> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></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]); | |
| treeChart = d3.layout.tree(); | |
| treeChart.size([500,500]) | |
| .children(function(d) {return d.values}); | |
| var linkGenerator = d3.svg.diagonal(); | |
| linkGenerator | |
| .projection(function (d) {return [d.y, d.x]}) | |
| d3.select("svg") | |
| .append("g") | |
| .attr("class", "treeG") | |
| .selectAll("g") | |
| .data(treeChart(packableTweets)) | |
| .enter() | |
| .append("g") | |
| .attr("class", "node") | |
| .attr("transform", function(d) {return "translate(" +d.y+","+d.x+")"}); | |
| d3.selectAll("g.node") | |
| .append("circle") | |
| .attr("r", 10) | |
| .style("fill", function(d) {return depthScale(d.depth)}) | |
| .style("stroke", "white") | |
| .style("stroke-width", "2px"); | |
| d3.selectAll("g.node") | |
| .append("text") | |
| .text(function(d) {return d.id || d.key || d.content}) | |
| d3.select("g.treeG").selectAll("path") | |
| .data(treeChart.links(treeChart(packableTweets))) | |
| .enter().insert("path","g") | |
| .attr("d", linkGenerator) | |
| .style("fill", "none") | |
| .style("stroke", "black") | |
| .style("stroke-width", "2px"); | |
| treeZoom = d3.behavior.zoom(); | |
| treeZoom.on("zoom", zoomed); | |
| d3.select("svg").call(treeZoom) | |
| function zoomed() { | |
| var zoomTranslate = treeZoom.translate(); | |
| d3.select("g.treeG").attr("transform", "translate("+zoomTranslate[0]+","+zoomTranslate[1]+")") | |
| } | |
| } | |
| </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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