41 строка
1.3 KiB
JavaScript
41 строка
1.3 KiB
JavaScript
// Based on http://bl.ocks.org/900762 by John Firebaugh
|
|
d3.json("../data/faithful.json", function(faithful) {
|
|
data = faithful;
|
|
var w = 800,
|
|
h = 400,
|
|
x = d3.scale.linear().domain([30, 110]).range([0, w]);
|
|
bins = d3.layout.histogram().frequency(false).bins(x.ticks(60))(data),
|
|
max = d3.max(bins, function(d) { return d.y; }),
|
|
y = d3.scale.linear().domain([0, .1]).range([0, h]),
|
|
kde = science.stats.kde().sample(data);
|
|
|
|
var vis = d3.select("body")
|
|
.append("svg")
|
|
.attr("width", w)
|
|
.attr("height", h);
|
|
|
|
var bars = vis.selectAll("g.bar")
|
|
.data(bins)
|
|
.enter().append("g")
|
|
.attr("class", "bar")
|
|
.attr("transform", function(d, i) {
|
|
return "translate(" + x(d.x) + "," + (h - y(d.y)) + ")";
|
|
});
|
|
|
|
bars.append("rect")
|
|
.attr("fill", "steelblue")
|
|
.attr("width", function(d) { return x(d.dx + 30) - 1; })
|
|
.attr("height", function(d) { return y(d.y); });
|
|
|
|
var line = d3.svg.line()
|
|
.x(function(d) { return x(d[0]); })
|
|
.y(function(d) { return h - y(d[1]); });
|
|
|
|
vis.selectAll("path")
|
|
.data(d3.values(science.stats.bandwidth))
|
|
.enter().append("path")
|
|
.attr("d", function(h) {
|
|
return line(kde.bandwidth(h)(d3.range(30, 110, .1)));
|
|
});
|
|
});
|