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2-718/box.css

Created May 12, 2012 13:44
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box.css
.box { font: 10px sans-serif; }
.box line, .box rect, .box circle { stroke: #000; stroke-width: 1.5px; fill: #fff; }
.box .center { stroke-dasharray: 3 3; }
.box .outlier { stroke: #ccc; fill: none; }
Raw
box.js
var margin = {top: 10, right: 50, bottom: 20, left: 50},
width = 120 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var min = Infinity,
max = -Infinity;
var chart = boxChart()
.whiskers(iqr(1.5))
.width(width)
.height(height);
d3.csv("../data/morley.csv", function(csv) {
var data = [];
// csv.forEach(function(x) {
// var e = ~~x.Expt - 1,
// r = ~~x.Run - 1,
// s = ~~x.Speed,
// d = data[e];
// if (!d) d = data[e] = [s];
// else d.push(s);
// if (s > max) max = s;
// if (s < min) min = s;
// });
data = [
[1, 2, 3, 4, 5],
[6, 7, 8, 9, 10],
[11, 12, 13, 14, 15],
[16, 17, 18, 19, 20]
];
min = 1;
max = 20;
chart.domain([min, max]);
var vis = d3.select("#chart").selectAll("svg").data(data).enter().append("svg").attr("class", "box").attr("width", width + margin.left + margin.right).attr("height", height + margin.bottom + margin.top).append("g").attr("transform", "translate(" + margin.left + "," + margin.top + ")").call(chart);
chart.duration(1000);
window.transition = function() {
vis.datum(randomize).call(chart);
};
});
// d3.select("#chart").selectAll("svg").
function randomize(d) {
if (!d.randomizer) d.randomizer = randomizer(d);
return d.map(d.randomizer);
}
function randomizer(d) {
var k = d3.max(d) * .02;
return function(d) {
return Math.max(min, Math.min(max, d + k * (Math.random() - .5)));
};
}
// Returns a function to compute the interquartile range.
function iqr(k) {
return function(d, i) {
var q1 = d.quartiles[0],
q3 = d.quartiles[2],
iqr = (q3 - q1) * k,
i = -1,
j = d.length;
while (d[++i] < q1 - iqr);
while (d[--j] > q3 + iqr);
return [i, j];
};
}
// Inspired by http://informationandvisualization.de/blog/box-plot
function boxChart() {
var width = 1,
height = 1,
duration = 0,
domain = null,
value = Number,
whiskers = boxWhiskers,
quartiles = boxQuartiles,
tickFormat = null;
// For each small multiple…
function box(g) {
g.each(function(d, i) {
d = d.map(value).sort(d3.ascending);
var g = d3.select(this),
n = d.length,
min = d[0],
max = d[n - 1];
// Compute quartiles. Must return exactly 3 elements.
var quartileData = d.quartiles = quartiles(d);
// Compute whiskers. Must return exactly 2 elements, or null.
var whiskerIndices = whiskers && whiskers.call(this, d, i),
whiskerData = whiskerIndices && whiskerIndices.map(function(i) { return d[i]; });
// Compute outliers. If no whiskers are specified, all data are "outliers".
// We compute the outliers as indices, so that we can join across transitions!
var outlierIndices = whiskerIndices
? d3.range(0, whiskerIndices[0]).concat(d3.range(whiskerIndices[1] + 1, n))
: d3.range(n);
// Compute the new x-scale.
var x1 = d3.scale.linear()
.domain(domain && domain.call(this, d, i) || [min, max])
.range([height, 0]);
// Retrieve the old x-scale, if this is an update.
var x0 = this.__chart__ || d3.scale.linear()
.domain([0, Infinity])
.range(x1.range());
// Stash the new scale.
this.__chart__ = x1;
// Note: the box, median, and box tick elements are fixed in number,
// so we only have to handle enter and update. In contrast, the outliers
// and other elements are variable, so we need to exit them! Variable
// elements also fade in and out.
// Update center line: the vertical line spanning the whiskers.
var center = g.selectAll("line.center")
.data(whiskerData ? [whiskerData] : []);
center.enter().insert('svg:circle', 'text')
.attr("class", "outlier")
.attr("r", 5)
.attr("cx", 25)
.attr("cy", 25)
.style("opacity", 1e-6)
.transition()
.duration(duration)
.attr("cy", 25)
.style("opacity", 1);
center.enter().insert("svg:line", "rect")
.attr("class", "center")
.attr("x1", width / 2)
.attr("y1", function(d) { return x0(d[0]); })
.attr("x2", width / 2)
.attr("y2", function(d) { return x0(d[1]); })
.style("opacity", 1e-6)
.transition()
.duration(duration)
.style("opacity", 1)
.attr("y1", function(d) { return x1(d[0]); })
.attr("y2", function(d) { return x1(d[1]); });
center.transition()
.duration(duration)
.style("opacity", 1)
.attr("y1", function(d) { return x1(d[0]); })
.attr("y2", function(d) { return x1(d[1]); });
center.exit().transition()
.duration(duration)
.style("opacity", 1e-6)
.attr("y1", function(d) { return x1(d[0]); })
.attr("y2", function(d) { return x1(d[1]); })
.remove();
// Update innerquartile box.
var box = g.selectAll("rect.box")
.data([quartileData]);
box.enter().append("svg:rect")
.attr("class", "box")
.attr("x", 0)
.attr("y", function(d) { return x0(d[2]); })
.attr("width", width)
.attr("height", function(d) { return x0(d[0]) - x0(d[2]); })
.transition()
.duration(duration)
.attr("y", function(d) { return x1(d[2]); })
.attr("height", function(d) { return x1(d[0]) - x1(d[2]); });
box.transition()
.duration(duration)
.attr("y", function(d) { return x1(d[2]); })
.attr("height", function(d) { return x1(d[0]) - x1(d[2]); });
// Update median line.
var medianLine = g.selectAll("line.median")
.data([quartileData[1]]);
medianLine.enter().append("svg:line")
.attr("class", "median")
.attr("x1", 0)
.attr("y1", x0)
.attr("x2", width)
.attr("y2", x0)
.transition()
.duration(duration)
.attr("y1", x1)
.attr("y2", x1);
medianLine.transition()
.duration(duration)
.attr("y1", x1)
.attr("y2", x1);
// Update whiskers.
var whisker = g.selectAll("line.whisker")
.data(whiskerData || []);
whisker.enter().insert("svg:line", "circle, text")
.attr("class", "whisker")
.attr("x1", 0)
.attr("y1", x0)
.attr("x2", width)
.attr("y2", x0)
.style("opacity", 1e-6)
.transition()
.duration(duration)
.attr("y1", x1)
.attr("y2", x1)
.style("opacity", 1);
whisker.transition()
.duration(duration)
.attr("y1", x1)
.attr("y2", x1)
.style("opacity", 1);
whisker.exit().transition()
.duration(duration)
.attr("y1", x1)
.attr("y2", x1)
.style("opacity", 1e-6)
.remove();
// Update outliers.
var outlier = g.selectAll("circle.outlier")
.data(outlierIndices, Number);
outlier.enter().insert("svg:circle", "text")
.attr("class", "outlier")
.attr("r", 5)
.attr("cx", width / 2)
.attr("cy", function(i) { return x0(d[i]); })
.style("opacity", 1e-6)
.transition()
.duration(duration)
.attr("cy", function(i) { return x1(d[i]); })
.style("opacity", 1);
outlier.transition()
.duration(duration)
.attr("cy", function(i) { return x1(d[i]); })
.style("opacity", 1);
outlier.exit().transition()
.duration(duration)
.attr("cy", function(i) { return x1(d[i]); })
.style("opacity", 1e-6)
.remove();
// Compute the tick format.
var format = tickFormat || x1.tickFormat(8);
// Update box ticks.
var boxTick = g.selectAll("text.box")
.data(quartileData);
boxTick.enter().append("svg:text")
.attr("class", "box")
.attr("dy", ".3em")
.attr("dx", function(d, i) { return i & 1 ? 6 : -6 })
.attr("x", function(d, i) { return i & 1 ? width : 0 })
.attr("y", x0)
.attr("text-anchor", function(d, i) { return i & 1 ? "start" : "end"; })
.text(format)
.transition()
.duration(duration)
.attr("y", x1);
boxTick.transition()
.duration(duration)
.text(format)
.attr("y", x1);
// Update whisker ticks. These are handled separately from the box
// ticks because they may or may not exist, and we want don't want
// to join box ticks pre-transition with whisker ticks post-.
var whiskerTick = g.selectAll("text.whisker")
.data(whiskerData || []);
whiskerTick.enter().append("svg:text")
.attr("class", "whisker")
.attr("dy", ".3em")
.attr("dx", 6)
.attr("x", width)
.attr("y", x0)
.text(format)
.style("opacity", 1e-6)
.transition()
.duration(duration)
.attr("y", x1)
.style("opacity", 1);
whiskerTick.transition()
.duration(duration)
.text(format)
.attr("y", x1)
.style("opacity", 1);
whiskerTick.exit().transition()
.duration(duration)
.attr("y", x1)
.style("opacity", 1e-6)
.remove();
});
d3.timer.flush();
}
box.width = function(x) {
if (!arguments.length) return width;
width = x;
return box;
};
box.height = function(x) {
if (!arguments.length) return height;
height = x;
return box;
};
box.tickFormat = function(x) {
if (!arguments.length) return tickFormat;
tickFormat = x;
return box;
};
box.duration = function(x) {
if (!arguments.length) return duration;
duration = x;
return box;
};
box.domain = function(x) {
if (!arguments.length) return domain;
domain = x == null ? x : d3.functor(x);
return box;
};
box.value = function(x) {
if (!arguments.length) return value;
value = x;
return box;
};
box.whiskers = function(x) {
if (!arguments.length) return whiskers;
whiskers = x;
return box;
};
box.quartiles = function(x) {
if (!arguments.length) return quartiles;
quartiles = x;
return box;
};
return box;
};
function boxWhiskers(d) {
return [0, d.length - 1];
}
function boxQuartiles(d) {
return [
d3.quantile(d, .25),
d3.quantile(d, .5),
d3.quantile(d, .75)
];
}
Raw
button.css
button {
font: 14px Helvetica Neue;
background-color: #222;
background-image: -moz-linear-gradient(top, rgba(255,255,255,.25), rgba(255,255,255,.11));
background-image: -webkit-gradient(linear,left top,left bottom,color-stop(0, rgba(255,255,255,.25)),color-stop(1, rgba(255,255,255,.11)));
background-image: -webkit-linear-gradient(rgba(255,255,255,.25), rgba(255,255,255,.11));
color: #fff;
text-rendering: optimizeLegibility;
text-shadow: 0 -1px 1px #222;
padding: 6px 10px 6px 10px;
border: 0;
border-radius: 0;
border-bottom: 1px solid #222;
margin: 0;
-moz-box-shadow: 0 1px 3px #999;
-webkit-box-shadow: 0 1px 3px #999;
}
button.first {
border-top-left-radius: 5px;
border-bottom-left-radius: 5px;
}
button.last {
border-top-right-radius: 5px;
border-bottom-right-radius: 5px;
}
button.active {
background-color: rgb(65,102,133);
}
button:hover {
background-color: steelblue;
}
Raw
index.html
<!DOCTYPE html>
<html>
<head>
<title>Box Plot Charts</title>
<script type="text/javascript" src="https://raw.github.com/mbostock/d3/v2.9.1/d3.v2.min.js"></script>
<link type="text/css" rel="stylesheet" href="../button.css"/>
<link type="text/css" rel="stylesheet" href="box.css"/>
</head>
<body>
<div id="chart">
<button class="first last" onclick="transition()">
Update
</button><p>
</div>
<script type="text/javascript" src="box.js"></script>
</body>
</html>
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