|
<!DOCTYPE html> |
|
<meta charset="utf-8"> |
|
<style> |
|
|
|
body { |
|
font: 10px sans-serif; |
|
} |
|
|
|
text { |
|
fill: #000; |
|
} |
|
|
|
path.candle { |
|
stroke: #000000; |
|
} |
|
|
|
path.candle.body { |
|
stroke-width: 0; |
|
} |
|
|
|
path.candle.up { |
|
fill: #00AA00; |
|
stroke: #00AA00; |
|
} |
|
|
|
path.candle.down { |
|
fill: #FF0000; |
|
stroke: #FF0000; |
|
} |
|
|
|
rect.pane { |
|
cursor: move; |
|
fill: none; |
|
pointer-events: all; |
|
} |
|
|
|
</style> |
|
<body> |
|
<script src="http://d3js.org/d3.v4.min.js"></script> |
|
<script src="http://techanjs.org/techan.min.js"></script> |
|
<script> |
|
|
|
var margin = {top: 20, right: 20, bottom: 30, left: 50}, |
|
width = 960 - margin.left - margin.right, |
|
height = 500 - margin.top - margin.bottom; |
|
|
|
var parseDate = d3.timeParse("%d-%b-%y"); |
|
|
|
var x = d3.scaleTime() |
|
.range([0, width]); |
|
|
|
var y = d3.scaleLinear() |
|
.range([height, 0]); |
|
|
|
var zoom = d3.zoom() |
|
.on("zoom", zoomed); |
|
|
|
var candlestick = techan.plot.candlestick() |
|
.xScale(x) |
|
.yScale(y); |
|
|
|
var xAxis = d3.axisBottom(x); |
|
|
|
var yAxis = d3.axisLeft(y); |
|
|
|
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 + ")"); |
|
|
|
svg.append("clipPath") |
|
.attr("id", "clip") |
|
.append("rect") |
|
.attr("x", 0) |
|
.attr("y", y(1)) |
|
.attr("width", width) |
|
.attr("height", y(0) - y(1)); |
|
|
|
svg.append("g") |
|
.attr("class", "candlestick") |
|
.attr("clip-path", "url(#clip)"); |
|
|
|
svg.append("g") |
|
.attr("class", "x axis") |
|
.attr("transform", "translate(0," + height + ")"); |
|
|
|
svg.append("g") |
|
.attr("class", "y axis") |
|
.append("text") |
|
.attr("transform", "rotate(-90)") |
|
.attr("y", 6) |
|
.attr("dy", ".71em") |
|
.style("text-anchor", "end") |
|
.text("Price ($)"); |
|
|
|
svg.append("rect") |
|
.attr("class", "pane") |
|
.attr("width", width) |
|
.attr("height", height) |
|
.call(zoom); |
|
|
|
var result = d3.csv("data.csv", function(error, data) { |
|
var accessor = candlestick.accessor(); |
|
|
|
data = data.slice(0, 130).map(function(d) { |
|
return { |
|
date: parseDate(d.Date), |
|
open: +d.Open, |
|
high: +d.High, |
|
low: +d.Low, |
|
close: +d.Close, |
|
volume: +d.Volume |
|
}; |
|
}).sort(function(a, b) { return d3.ascending(accessor.d(a), accessor.d(b)); }); |
|
|
|
x.domain(d3.extent(data.map(accessor.d))); |
|
y.domain(techan.scale.plot.ohlc(data, accessor).domain()); |
|
|
|
svg.select("g.candlestick").datum(data); |
|
draw(); |
|
}); |
|
|
|
function zoomed() { |
|
var scaledX = d3.event.transform.rescaleX(x), |
|
scaledY = d3.event.transform.rescaleY(y); |
|
candlestick.xScale(scaledX); |
|
candlestick.yScale(scaledY); |
|
xAxis.scale(scaledX); |
|
yAxis.scale(scaledY); |
|
draw(); |
|
} |
|
|
|
function draw() { |
|
svg.select("g.candlestick").call(candlestick); |
|
// using refresh method is more efficient as it does not perform any data joins |
|
// Use this if underlying data is not changing |
|
// svg.select("g.candlestick").call(candlestick.refresh); |
|
svg.select("g.x.axis").call(xAxis); |
|
svg.select("g.y.axis").call(yAxis) |
|
} |
|
|
|
</script> |