tmcw · February 27, 2013 04:28
diff --git a/index.html b/index.html
 <!DOCTYPE html>
 <meta charset="utf-8">
 <title></title>
 <style>

 body {
  font: 10px sans-serif;
  background:#000;
  width:500px;
  margin:0 auto;
 }

 img { float: left; }
 svg { float: left; }

 .axis path,
 .axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
 }

 .area { fill: black; }

 .line {
  stroke-width:1.5;
  stroke:#eee;
 }

 path.mini-line {
  stroke-width:1.5;
  stroke:#eee;
 }

 g.select {
    cursor:pointer;
 }

 </style>
 <body>
 <script src="http://d3js.org/d3.v3.js"></script>
 <script>

 var margin = {top: 60, right: 20, bottom: 30, left: 50},
    width = 500 - margin.left - margin.right,
    height = 600 - margin.top - margin.bottom;

 var x = d3.time.scale()
    .domain([0, 1])
    .range([0, width]);

 var y = d3.scale.linear()
    .domain([0, 1])
    .range([400, 0]);

 var area = d3.svg.area()
    .x(function(d) { return x(d.x); })
    .y0(height)
    .y1(function(d) { return y(d.y); })
    .interpolate('basis');

 var mini_line = d3.svg.line()
    .x(function(d, i) { return i * 5; })
    .y(function(d) { return d * 5; })
    .interpolate('basis');

 var line = d3.svg.line()
    .x(function(d) { return x(d.x); })
    .y(function(d) { return y(d.y); })
    .interpolate('basis');

 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 + ")");

 var jitter = 1;

 function data() {
    return d3.range(0, 40).map(function(y) {
        // pseudorandom noise
        var pseudo = Math.random() * 1.2;
        var pseudo_b = Math.random();
        return d3.range(0, 40).map(function(x) {
            if (Math.random() > 0.7) pseudo_b = Math.random();
            return {
                x: x / 40,
                y0: y / 40,
                y: (y / 40) + (((x < 10 || x > 30) ? 0.2 : 1) *
                    Math.sin(x / (Math.PI * 4)) * (jitter * Math.random() / 5) *
                        pseudo * pseudo_b)
            };
        });
    }).reverse();
 }

 function draw() {
    var wave = svg.selectAll('g.wave').data(data()),
        wave_enter = wave.enter()
            .append('g')
            .attr('class', 'wave');

    wave_enter.append('path')
        .attr('class', 'area');

    wave_enter.append('path')
        .attr('class', 'line');

    wave.select('path.area').transition().duration(400).attr('d', area);
    wave.select('path.line').transition().duration(400).attr('d', line);

    d3.timer(draw, 2000);
 }

 draw();

 function sinw(cycle) {
    return function(x) { return Math.sin(x / cycle); }
 }

 var waves = [
    d3.range(0, 20).map(sinw(3)),
    d3.range(0, 20).map(sinw(2)),
    d3.range(0, 20).map(sinw(1))
 ];

 var selects = svg.selectAll('g.select')
    .data(waves)
    .enter()
    .append('g').attr('class', 'select')
    .attr('transform', function(d, i) {
        return 'translate(' + [i * 162, 450] + ')';
    })
    .on('click', function(d, i) { jitter = (i + 1) / 2; });

 selects.append('rect').attr({ width: 150, height: 50 });

 selects.append('path')
    .attr('class', 'mini-line').attr('d', mini_line);

 </script>
	<!DOCTYPE html>
	<meta charset="utf-8">
	<title></title>
	<style>

	body {
	font: 10px sans-serif;
	background:#000;
	width:500px;
	margin:0 auto;
	}

	img { float: left; }
	svg { float: left; }

	.axis path,
	.axis line {
	fill: none;
	stroke: #000;
	shape-rendering: crispEdges;
	}

	.area { fill: black; }

	.line {
	stroke-width:1.5;
	stroke:#eee;
	}

	path.mini-line {
	stroke-width:1.5;
	stroke:#eee;
	}

	g.select {
	cursor:pointer;
	}

	</style>
	<body>
	<script src="http://d3js.org/d3.v3.js"></script>
	<script>

	var margin = {top: 60, right: 20, bottom: 30, left: 50},
	width = 500 - margin.left - margin.right,
	height = 600 - margin.top - margin.bottom;

	var x = d3.time.scale()
	.domain([0, 1])
	.range([0, width]);

	var y = d3.scale.linear()
	.domain([0, 1])
	.range([400, 0]);

	var area = d3.svg.area()
	.x(function(d) { return x(d.x); })
	.y0(height)
	.y1(function(d) { return y(d.y); })
	.interpolate('basis');

	var mini_line = d3.svg.line()
	.x(function(d, i) { return i * 5; })
	.y(function(d) { return d * 5; })
	.interpolate('basis');

	var line = d3.svg.line()
	.x(function(d) { return x(d.x); })
	.y(function(d) { return y(d.y); })
	.interpolate('basis');

	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 + ")");

	var jitter = 1;

	function data() {
	return d3.range(0, 40).map(function(y) {
	// pseudorandom noise
	var pseudo = Math.random() * 1.2;
	var pseudo_b = Math.random();
	return d3.range(0, 40).map(function(x) {
	if (Math.random() > 0.7) pseudo_b = Math.random();
	return {
	x: x / 40,
	y0: y / 40,
	y: (y / 40) + (((x < 10 \|\| x > 30) ? 0.2 : 1) *
	Math.sin(x / (Math.PI * 4)) * (jitter * Math.random() / 5) *
	pseudo * pseudo_b)
	};
	});
	}).reverse();
	}

	function draw() {
	var wave = svg.selectAll('g.wave').data(data()),
	wave_enter = wave.enter()
	.append('g')
	.attr('class', 'wave');

	wave_enter.append('path')
	.attr('class', 'area');

	wave_enter.append('path')
	.attr('class', 'line');

	wave.select('path.area').transition().duration(400).attr('d', area);
	wave.select('path.line').transition().duration(400).attr('d', line);

	d3.timer(draw, 2000);
	}

	draw();

	function sinw(cycle) {
	return function(x) { return Math.sin(x / cycle); }
	}

	var waves = [
	d3.range(0, 20).map(sinw(3)),
	d3.range(0, 20).map(sinw(2)),
	d3.range(0, 20).map(sinw(1))
	];

	var selects = svg.selectAll('g.select')
	.data(waves)
	.enter()
	.append('g').attr('class', 'select')
	.attr('transform', function(d, i) {
	return 'translate(' + [i * 162, 450] + ')';
	})
	.on('click', function(d, i) { jitter = (i + 1) / 2; });

	selects.append('rect').attr({ width: 150, height: 50 });

	selects.append('path')
	.attr('class', 'mini-line').attr('d', mini_line);

	</script>