A short demo of scatterplots with animated transitions, based on this example from the New York Times.
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October 29, 2016 07:40
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Dancing scatterplot
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style type="text/css"> | |
| .dot { | |
| fill:red; | |
| } | |
| </style> | |
| <button id="button1" class="button b1">I am a button</button> | |
| <button id="button2" class="button b2">I am another button</button> | |
| <div class="scatterplot"></div> | |
| <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| <script type="text/javascript"> | |
| // from here http://bl.ocks.org/mbostock/3019563 | |
| var margin = {top: 20, right: 10, bottom: 20, left: 10}; | |
| var width = 960 - margin.left - margin.right, | |
| height = 500 - margin.top - margin.bottom; | |
| var svg = d3.select(".scatterplot").append("svg") | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom) | |
| .append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| var x = d3.scale.linear() | |
| .range([0, width]) | |
| .domain([0,500]); | |
| var y = d3.scale.linear() | |
| .range([height, 0]) | |
| .domain([0,10]); | |
| d3.tsv("test.tsv", function(err, data) { | |
| var dots = svg.selectAll(".dot") | |
| .data(data) | |
| .enter().append("circle") | |
| .attr("class", "dot") | |
| .attr("cx", function(d) { return x(d.x1); }) | |
| .attr("cy", function(d) { return y(d.y1); }) | |
| .attr("r", 5); | |
| // this could obviously be made into a function, | |
| // shown here for clarity, or because I'm lazy. | |
| d3.selectAll(".button").on("click", function(d) { | |
| var buttonId = d3.select(this).attr("id"); | |
| if (buttonId == "button1") { | |
| dots | |
| .transition(1) | |
| .attr("cx", function(d) { return x(d.x1) }); | |
| } | |
| if (buttonId == "button2") { | |
| dots | |
| .transition(1) | |
| .attr("cx", function(d) { return x(d.x2) }); | |
| } | |
| }); | |
| }); | |
| </script> |
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| y1 | x1 | x2 | label | |
|---|---|---|---|---|
| 1 | 145 | 20 | a | |
| 2 | 150 | 70 | b | |
| 3 | 180 | 120 | c | |
| 4 | 155 | 170 | d | |
| 5 | 160 | 220 | e | |
| 6 | 170 | 270 | f | |
| 7 | 190 | 320 | g | |
| 8 | 155 | 370 | h | |
| 9 | 165 | 420 | i | |
| 10 | 170 | 470 | j |
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