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1 <!DOCTYPE html> |
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2 <html> |
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3 <head> |
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4 <title>Hello, sort!</title> |
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5 <script type="text/javascript" src="../../d3.js"></script> |
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6 <style type="text/css"> |
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7 |
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8 html, body, svg { |
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9 font: 14px Helvetica Neue; |
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10 margin: 0; |
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11 width: 100%; |
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12 height: 100%; |
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13 display: block; |
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14 } |
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15 |
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16 circle { |
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17 fill: steelblue; |
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18 fill-opacity: .8; |
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19 stroke: #fff; |
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20 } |
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21 |
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22 div { |
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23 position: fixed; |
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24 top: 10px; |
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25 left: 10px; |
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26 } |
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27 |
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28 </style> |
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29 </head> |
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30 <body> |
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31 <div> |
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32 <input id="sort" type="checkbox" checked> |
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33 <label for="sort">Ascending</label> |
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34 </div> |
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35 <script type="text/javascript"> |
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36 |
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37 d3.select("body") |
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38 .append("svg:svg") |
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39 .attr("viewBox", "0 0 1000 1000"); |
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40 |
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41 d3.select("#sort") |
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42 .on("change", sort); |
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43 |
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44 transform(); |
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45 |
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46 function transform() { |
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47 var circle = d3.select("svg") |
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48 .selectAll("circle") |
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49 .data(d3.range(400).map(Math.random)); |
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50 |
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51 circle.enter().append("svg:circle") |
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52 .attr("cx", function() { return 100 + Math.random() * 800; }) |
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53 .attr("cy", function() { return 100 + Math.random() * 800; }) |
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54 .attr("r", function(d) { return 50 * d; }); |
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55 |
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56 circle |
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57 .transition() |
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58 .duration(750) |
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59 .attr("r", function(d) { return 50 * d; }); |
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60 |
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61 sort(); |
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62 } |
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63 |
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64 function sort() { |
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65 d3.selectAll("circle") |
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66 .sort(d3.select("#sort").property("checked") |
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67 ? function(a, b) { return b - a; } |
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68 : function(a, b) { return a - b; }); |
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69 } |
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70 |
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71 window.addEventListener("keypress", transform, false); |
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72 |
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73 </script> |
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74 </body> |
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75 </html> |