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area-ggplot.html
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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<script type="text/javascript" src="d3/d3.js"></script>
<script type="text/javascript" src="d3/d3.csv.js"></script>
<script type="text/javascript" src="d3/d3.time.js"></script>
<link type="text/css" rel="stylesheet" href="style.css"/>
<style type="text/css">
svg {
font-size: 10px;
}
rect {
fill: #ddd;
}
path.area {
fill: #000;
fill-opacity: .75;
}
.axis line, .grid line {
stroke-width: .5px;
shape-rendering: crispEdges;
}
.grid line {
stroke: #fff;
}
.grid line.minor {
stroke-opacity: .5;
}
.grid text {
display: none;
}
.axis line {
stroke: #000;
}
.grid path, .axis path {
display: none;
}
</style>
</head>
<body>
<div id="body">
<div id="footer">
<span>DJI, 1996-2009</span>
<div class="hint">click or option-click to toggle zoom</div>
</div>
</div>
<script type="text/javascript">
var m = [79, 80, 160, 79],
w = 1280 - m[1] - m[3],
h = 800 - m[0] - m[2],
parse = d3.time.format("%Y-%m-%d").parse,
format = d3.time.format("%Y");
// Scales. Note the inverted domain for the y-scale: bigger is up!
var x = d3.time.scale().range([20, w - 20]),
y = d3.scale.linear().range([h - 20, 20]),
d0 = [],
d1 = [];
// Axes.
var xAxis = d3.svg.axis().scale(x).orient("bottom"),
yAxis = d3.svg.axis().scale(y).orient("right");
// An area generator.
var area = d3.svg.area()
.x(function(d) { return x(d.Date); })
.y0(y(0))
.y1(function(d) { return y(d.Close); });
var svg = d3.select("body").append("svg:svg")
.attr("width", w + m[1] + m[3])
.attr("height", h + m[0] + m[2])
.append("svg:g")
.attr("transform", "translate(" + m[3] + "," + m[0] + ")");
svg.append("svg:rect")
.attr("width", w)
.attr("height", h);
svg.append("svg:clipPath")
.attr("id", "clip")
.append("svg:rect")
.attr("x", x(0))
.attr("y", y(1))
.attr("width", x(1) - x(0))
.attr("height", y(0) - y(1));
d3.csv("dji.csv", function(data) {
// Parse dates and numbers.
data.reverse().forEach(function(d) {
d.Date = parse(d.Date);
d.Close = +d.Close;
});
// Filter the data down to weekly closes (for faster zooming).
data = data.filter(function(d) {
return d.Date.getDay() === 1;
});
// Compute the minimum and maximum date, and the maximum price.
d0 = [new Date(1996, 0, 1), new Date(2010, 0, 0)];
d1 = [data[0].Date, data[data.length - 1].Date];
x.domain(d0);
y.domain([0, d3.max(data, function(d) { return d.Close; })]);
svg.append("svg:g")
.attr("class", "x grid")
.attr("transform", "translate(0," + h + ")")
.call(xAxis.tickSubdivide(1).tickSize(-h));
svg.append("svg:g")
.attr("class", "y grid")
.attr("transform", "translate(" + w + ",0)")
.call(yAxis.tickSubdivide(1).tickSize(-w));
svg.append("svg:g")
.attr("class", "x axis")
.attr("transform", "translate(0," + h + ")")
.call(xAxis.tickSubdivide(0).tickSize(6));
svg.append("svg:g")
.attr("class", "y axis")
.attr("transform", "translate(" + w + ",0)")
.call(yAxis.tickSubdivide(0).tickSize(6));
svg.append("svg:path")
.data([data])
.attr("class", "area")
.attr("clip-path", "url(#clip)")
.attr("d", area);
});
// On click, update the x-axis.
svg.on("click", function() {
var d = x.domain()[0] - d0[0] ? d0 : d1;
x.domain(d);
d3.select("#footer span").text("DJI, " + d.map(format).join("-"));
var t = svg.transition().duration(d3.event.altKey ? 7500 : 750);
t.select("g.x.grid").call(xAxis.tickSubdivide(1).tickSize(-h));
t.select("g.y.grid").call(yAxis.tickSubdivide(1).tickSize(-w));
t.select("g.x.axis").call(xAxis.tickSubdivide(0).tickSize(6));
t.select("g.y.axis").call(yAxis.tickSubdivide(0).tickSize(6));
t.select("path.area").attr("d", area);
});
</script>
</body>
</html>