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Scatter Plot
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style type="text/css"> | |
| .axis path, | |
| .axis line { | |
| fill: none; | |
| stroke: black; | |
| shape-rendering: crispEdges; | |
| } | |
| .axis text { | |
| font-family: sans-serif; | |
| font-size: 11px; | |
| } | |
| </style> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <body> | |
| <script type="text/javascript"> | |
| var dataset = []; | |
| var numDataPoints = 3000; | |
| var xRange = Math.random() * 1000; | |
| var yRange = Math.random() * 1000; | |
| for(var i = 0; i < numDataPoints; i++) { | |
| var t = Math.random()*Math.PI; | |
| var x = Math.random() * xRange; | |
| var y = Math.sqrt(x)*(0.5*(1+Math.cos(t))); | |
| dataset.push([Math.floor(x), Math.floor(y), t]); | |
| } | |
| var w = 960; | |
| var h = 500; | |
| var padding = 50; | |
| var xScale = d3.scale.linear() | |
| .domain([0, d3.max(dataset, function(d) { | |
| return d[0]; | |
| })]) | |
| .range([padding, w-60]); | |
| var yScale = d3.scale.linear() | |
| .domain([0, d3.max(dataset, function(d) { | |
| return d[1]; | |
| })]) | |
| .range([h - padding, padding]); | |
| var rScale = d3.scale.linear() | |
| .domain([0, d3.max(dataset, function(d) { return d[1] })]) | |
| .range([6, 1]); | |
| var alphaScale = d3.scale.linear() | |
| .domain([0, d3.max(dataset, function(d) { return d[1] })]) | |
| .range([0, 0.5]); | |
| var svg = d3.select("body").append("svg") | |
| .attr({ | |
| width: w, | |
| height: h | |
| }); | |
| svg.selectAll("circle") | |
| .data(dataset) | |
| .enter() | |
| .append("circle") | |
| .attr("cx", function(d, i) { | |
| return xScale(d[0]); | |
| }) | |
| .attr("cy", function(d, i) { | |
| return yScale(d[1]); | |
| }) | |
| .attr("r", function(d, i) { | |
| return rScale(d[1]); | |
| }) | |
| .attr("fill", function(d) { | |
| return "rgb(" + Math.floor(255-255*d[2]/Math.PI) + ", 0, " + Math.floor(255*d[2]/Math.PI) + ")"; | |
| }) | |
| .attr("opacity", function(d, i) { return alphaScale(d[1]); }); | |
| svg.selectAll("text") | |
| .data(dataset) | |
| .enter() | |
| .append("text") | |
| .attr({ | |
| "font-family": "sans-serif", | |
| "font-size": "10px", | |
| "fill": "red", | |
| "text-anchor": "right", | |
| "opacity": "0" | |
| }) | |
| .attr("x", function(d, i) { return xScale(d[0]); }) | |
| .attr("y", function(d, i) { return yScale(d[1]); }) | |
| .text(function(d, i) { | |
| return d[0] + "," + d[1]; | |
| }); | |
| var xAxis = d3.svg.axis() | |
| .scale(xScale) | |
| .orient("bottom") | |
| .ticks(5); | |
| svg.append("g") | |
| .attr({ | |
| "class": "axis", | |
| "transform": "translate(0, " + (h - padding) + ")" | |
| }) | |
| .call(xAxis); | |
| var yAxis = d3.svg.axis() | |
| .scale(yScale) | |
| .orient("left") | |
| .ticks(5); | |
| svg.append("g") | |
| .attr({ | |
| "class": "axis", | |
| "transform": "translate(" + padding + ", 0)" | |
| }) | |
| .call(yAxis); | |
| </script> | |
| </body> |
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