A set of 100 points are given a new uniform random distribution every 5 seconds.
Last active
August 29, 2015 14:08
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Random Scatter
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <html> | |
| <head> | |
| <title>Scatter</title> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <style> | |
| body { | |
| font-family: "Helvetica", sans-serif; | |
| font-size: 10px; | |
| } | |
| .axis { | |
| font: 10px sans-serif; | |
| } | |
| .axis path, | |
| .axis line { | |
| fill: none; | |
| stroke: #000; | |
| shape-rendering: crispEdges; | |
| } | |
| circle { | |
| fill: rgba(189,54,19,1); | |
| stroke: white; | |
| } | |
| </style> | |
| <body> | |
| <script> | |
| (function() { | |
| var num_points = 100; | |
| delay = 5000; | |
| var margin = {top: 20, right: 20, bottom: 40, left: 40}, | |
| width = 944 - margin.left - margin.right, | |
| height = 480 - margin.top - margin.bottom; | |
| var x = d3.scale.linear() | |
| .range([0, width]) | |
| .domain([0, 1]); | |
| var y = d3.scale.linear() | |
| .range([height, 0]) | |
| .domain([0, 1]); | |
| var xAxis = d3.svg.axis() | |
| .scale(x) | |
| .orient("bottom"); | |
| var yAxis = d3.svg.axis() | |
| .scale(y) | |
| .orient("left"); | |
| // Draw SVG | |
| var svg = d3.select("body").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 + ")"); | |
| // X axis | |
| svg.append("g") | |
| .attr("class", "x axis") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(xAxis); | |
| // Y axis | |
| svg.append("g") | |
| .attr("class", "y axis") | |
| .call(yAxis); | |
| var data_xy = d3.range(num_points) | |
| .map(function() { return [Math.random(), Math.random()]; }); | |
| var circles = svg.selectAll(".circle") | |
| .data(data_xy) | |
| .enter().append("svg:circle") | |
| .attr("cx", function (d) { return x(d[0]); } ) | |
| .attr("cy", function (d) { return y(d[1]); } ) | |
| .attr("r", 8); | |
| setInterval(function() { | |
| var data_xy = d3.range(num_points) | |
| .map(function() { return [Math.random(), Math.random()]; }); | |
| circles.data(data_xy) | |
| .transition() | |
| .duration(500) | |
| .attr("cx", function (d) { return x(d[0]); } ) | |
| .attr("cy", function (d) { return y(d[1]); } ) | |
| }, delay); | |
| })(); | |
| </script> | |
| </body> | |
| </html> |
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