Created
December 22, 2011 02:23
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<!DOCTYPE html> | |
<html> | |
<head> | |
<script src="https://raw.github.com/mbostock/d3/master/d3.js"></script> | |
<script src="https://raw.github.com/mbostock/d3/master/d3.time.js"></script> | |
<style type="text/css"> | |
body { | |
font: 10px sans-serif; | |
margin: 0; | |
} | |
path.line { | |
fill: none; | |
stroke: #666; | |
stroke-width: 1.5px; | |
} | |
path.area { | |
fill: #e7e7e7; | |
} | |
.axis { | |
shape-rendering: crispEdges; | |
} | |
.x.axis line { | |
stroke: #fff; | |
} | |
.x.axis .minor { | |
stroke-opacity: .5; | |
} | |
.x.axis path { | |
display: none; | |
} | |
.y.axis line, .y.axis path { | |
fill: none; | |
stroke: #000; | |
} | |
</style> | |
</head> | |
<body> | |
<script type="text/javascript"> | |
var m = [20, 40, 20, 20], | |
w = 960 - m[1] - m[3], | |
h = 140 - m[0] - m[2], | |
parse = d3.time.format("%b %Y").parse; | |
// Scales. Note the inverted domain for the y-scale: bigger is up! | |
var x = d3.time.scale().range([0, w]), | |
y = d3.scale.linear().range([h, 0]); | |
// Axes. | |
var xAxis = d3.svg.axis().scale(x).tickSize(-h).tickSubdivide(true), | |
yAxis = d3.svg.axis().scale(y).ticks(4).orient("right"); | |
// An area generator, for the light fill. | |
var area = d3.svg.area() | |
.interpolate("monotone") | |
.x(function(d) { return x(d.date); }) | |
.y0(h) | |
.y1(function(d) { return y(d.price); }); | |
// A line generator, for the dark stroke. | |
var line = d3.svg.line() | |
.interpolate("monotone") | |
.x(function(d) { return x(d.date); }) | |
.y(function(d) { return y(d.price); }); | |
var values = [] | |
var ts = 1322729460000; | |
count = 0; | |
for (i=0; i<=50; i++) { | |
values.push({ | |
date: ts + (i*60000), | |
price: Math.random() * 10 | |
}); | |
count++; | |
} | |
// Compute the minimum and maximum date, and the maximum price. | |
x.domain([values[0].date, values[values.length - 1].date]); | |
y.domain([0, d3.max(values, function(d) { return d.price; })]); | |
// Add an SVG element with the desired dimensions and margin. | |
var svg = d3.select("body").append("svg") | |
.attr("width", w + m[1] + m[3]) | |
.attr("height", h + m[0] + m[2]) | |
.append("g") | |
.attr("transform", "translate(" + m[3] + "," + m[0] + ")"); | |
// Add the clip path. | |
svg.append("clipPath") | |
.attr("id", "clip") | |
.append("rect") | |
.attr("width", w) | |
.attr("height", h); | |
// Add the x-axis. | |
svg.append("g") | |
.attr("class", "x axis") | |
.attr("transform", "translate(0," + h + ")") | |
.call(xAxis); | |
// Add the y-axis. | |
svg.append("g") | |
.attr("class", "y axis") | |
.attr("transform", "translate(" + w + ",0)") | |
.call(yAxis); | |
// Add the line path. | |
svg.append("path") | |
.attr("class", "line") | |
.attr("clip-path", "url(#clip)") | |
.attr("d", line(values)); | |
// On click, update the x-axis. | |
svg.on("click", function() { | |
/* | |
var n = values.length - 1, | |
i = Math.floor(Math.random() * n / 2), | |
j = i + Math.floor(Math.random() * n / 2) + 1; | |
x.domain([values[i].date, values[j].date]); | |
var t = svg.transition().duration(750); | |
t.select(".x.axis").call(xAxis); | |
t.select(".area").attr("d", area(values)); | |
t.select(".line").attr("d", line(values)); | |
*/ | |
}); | |
setInterval(function() { | |
values.shift(); | |
new_ts = ts + (count*60000), | |
values.push({ | |
date: new_ts, | |
price: Math.random() * 10 | |
}); | |
count++; | |
x.domain([values[0].date, values[values.length-1].date]) | |
var t = svg.transition().duration(750); | |
t.select(".x.axis").call(xAxis); | |
t.select(".line").attr("d", line(values)); | |
}, 1000); | |
</script> | |
</body> | |
</html> |
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