Created
September 25, 2012 23:24
-
-
Save mjfwest/3785048 to your computer and use it in GitHub Desktop.
D3js example, Single Line works. Multi Line works.. But then dies quickly.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <html lang="en"> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | |
| <title>multilinegraph</title> | |
| <meta name="generator" content="TextMate http://macromates.com/"> | |
| <meta name="author" content="Martin West"> | |
| <!-- Date: 2012-09-26 --> | |
| </head> | |
| <style> | |
| svg { | |
| font: 10px sans-serif; | |
| } | |
| .line { | |
| fill: none; | |
| stroke: #000; | |
| stroke-width: 1.5px; | |
| } | |
| .axis path, .axis line { | |
| fill: none; | |
| stroke: #000; | |
| shape-rendering: crispEdges; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://mbostock.github.com/d3/d3.js?2.7.2"></script> | |
| <script> | |
| var n = 40, | |
| random = d3.random.normal(0, .2), | |
| data = [d3.range(n).map(function(){return {x:random(),y:random()}})]; | |
| setTimeout(function(){ data.push(d3.range(n).map(function(){return {x:random(),y:random()}})) ;update_paths();},20*1000); | |
| var margin = {top: 10, right: 10, bottom: 20, left: 40}, | |
| width = 960 - margin.left - margin.right, | |
| height = 500 - margin.top - margin.bottom; | |
| var x = d3.scale.linear() | |
| .domain([0, n-1]) | |
| .range([0, width]); | |
| var y = d3.scale.linear() | |
| .domain([-1, 1]) | |
| .range([height, 0]); | |
| var z = d3.scale.category10(); | |
| var line = d3.svg.line() | |
| .x(function(d, i) { return x(i); }) | |
| .y(function(d, i) { return y(d.y); }); | |
| 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 + ")"); | |
| svg.append("defs").append("clipPath") | |
| .attr("id", "clip") | |
| .append("rect") | |
| .attr("width", width) | |
| .attr("height", height); | |
| svg.append("g") | |
| .attr("class", "x axis") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(d3.svg.axis().scale(x).orient("bottom")); | |
| svg.append("g") | |
| .attr("class", "y axis") | |
| .call(d3.svg.axis().scale(y).orient("left")); | |
| var line_group = svg.selectAll(".line_groups").data(data) | |
| line_group.enter().append("g").attr("class", "line_groups") | |
| line_group.exit().remove(); | |
| var group=svg.append("g") | |
| .attr("clip-path", "url(#clip)") | |
| update_paths(); | |
| tick(); | |
| function update_paths(){ | |
| var path=group.selectAll(".line") | |
| .data(data); | |
| path.enter().append("path") | |
| .attr("class", "line") | |
| .attr("d", line) | |
| .attr("stroke",function(d,i){return z(i)}); | |
| path.exit().remove(); | |
| } | |
| function tick() { | |
| // push a new data point onto the back | |
| data[0].push({x:random(),y:random()}); | |
| // redraw the line, and slide it to the left | |
| var path=group.selectAll(".line") | |
| .attr("d", line) | |
| .attr("transform", null) | |
| .transition() | |
| .duration(500) | |
| .ease("linear") | |
| .attr("transform", "translate(" + x(-1) + ")") | |
| .each("end", tick); | |
| // pop the old data point off the front | |
| data[0].shift(); | |
| } | |
| </script> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment