Created
June 7, 2014 16:22
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d3 multi-series scatter plot with series and data point transitions
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| <!DOCTYPE html> | |
| <html> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| function randomInt(min, max) { | |
| return Math.floor(Math.random() * (max - min + 1)) + min; | |
| } | |
| var min = 0, | |
| max = 10; | |
| // Create a one dimensional array of random [x,y] pairs | |
| function getSeries() { | |
| var length = randomInt(4, 8), | |
| series = []; | |
| for(var i = 0; i < length; ++i) { | |
| series.push([randomInt(min, max), randomInt(min, max)]); | |
| } | |
| return series; | |
| } | |
| // Create an array containing a random number of series arrays | |
| // I am aware that "serieses" is not a word. | |
| function getSerieses() { | |
| var n = randomInt(1,4), | |
| serieses = []; | |
| for(var i = 0; i < n; ++i) { | |
| serieses.push(getSeries()); | |
| } | |
| return serieses; | |
| } | |
| var margin = 20, | |
| outerWidth = 500, | |
| outerHeight = 500, | |
| width = outerWidth - 2 * margin, | |
| height = outerWidth - 2 * margin; | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", outerWidth) | |
| .attr("height", outerHeight) | |
| .append("g") | |
| .attr("transform", "translate(" + margin + "," + margin + ")"); | |
| var chart = svg.append('g').attr('class', 'chart'); | |
| var x = d3.scale.linear() | |
| .range([0, width]) | |
| .domain([0, 10]); | |
| var y = d3.scale.linear() | |
| .range([0, height]) | |
| .domain([0, 10]); | |
| var z = d3.scale.category10(); | |
| function update(serieses) { | |
| var series = chart.selectAll("g") | |
| .data(serieses); | |
| series.enter() | |
| .append('g'); | |
| series.exit() | |
| .transition() | |
| .duration(1000) | |
| .style('opacity', 0) | |
| .remove(); | |
| var circles = series.selectAll('circle') | |
| .data(function(d, i) { return d }) | |
| // update | |
| circles | |
| .transition() | |
| .duration(1000) | |
| .attr('cx', function(d) { return x(d[0]) }) | |
| .attr('cy', function(d) { return y(d[1]) }) | |
| circles.enter() | |
| .append('circle') | |
| .attr('cx', function(d) { return x(d[0]) }) | |
| .attr('cy', function(d) { return y(d[1]) }) | |
| .attr('r', 10) | |
| .attr('fill', function(d, i, seriesNum) { return z(seriesNum) }) | |
| .style('opacity', 0) | |
| .transition() | |
| .duration(1000) | |
| .style('opacity', 1); | |
| circles.exit() | |
| .transition() | |
| .duration(1000) | |
| .style('opacity', 0) | |
| .remove(); | |
| } | |
| update(getSerieses()); | |
| setInterval(function() { update(getSerieses()) }, 2000); | |
| </script> | |
| </body> | |
| </html> |
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