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chart.php
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<?php
require('inc/bootstrap.php');
?>
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="/css/TechanJS/TechanJS.css"/>
<title>Forex trader</title>
</head>
<body>
<script src="/js/d3.v3.min.js"></script>
<script src="/js/techan.min.js"></script>
<?php
if (!isset($_REQUEST['data'])) {
?>
<h1>AUD/CAD</h1>
<h2>Current account balance: £<?= number_format(account::getBalance(), 4) ?></h2>
<script src="https://cdn.socket.io/socket.io-1.4.5.js"></script>
<script>
var server = <?=(live ? '/:8081' : 'http://192.168.1.95:8081')?>,
socket = io(server);
socket.on('connect', function () {
socket.on('price', function (data) {
console.log(data);
if (data.pair == 'AUD_CAD') {
plotNewData(data);
}
});
socket.on('analysis_result', function (data) {
console.error(data);
});
});
</script>
<?php } ?>
<script>
var margin = {top: 20, right: 60, bottom: 30, left: 50},
width = (window.innerWidth - <?=(isset($_REQUEST['data']) ? 10 : 10)?>) - margin.left - margin.right,
height = (window.innerHeight - <?=(isset($_REQUEST['data']) ? 20 : 130)?>) - margin.top - margin.bottom;
var parseDate = d3.time.format("%d/%m/%Y %H:%M:%S").parse,
timeFormat = d3.time.format('%H:%M:%S'),
valueFormat = d3.format(',.5fs');
var zoom = d3.behavior.zoom()
.on("zoom", draw);
var x = techan.scale.financetime()
.range([0, width]);
var y = d3.scale.linear()
.range([height, 0]);
var ema0 = techan.plot.ema()
.xScale(x)
.yScale(y);
var ema0Calculator = techan.indicator.ema()
.period(20);
var ema1 = techan.plot.ema()
.xScale(x)
.yScale(y);
var ema1Calculator = techan.indicator.ema()
.period(50);
var candlestick = techan.plot.candlestick()
.xScale(x)
.yScale(y);
var ohlc = techan.plot.ohlc()
.xScale(x)
.yScale(y);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom");
var xTopAxis = d3.svg.axis()
.scale(x)
.orient("top");
var yAxis = d3.svg.axis()
.scale(y)
.orient("left");
var yRightAxis = d3.svg.axis()
.scale(y)
.orient("right");
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 + ")");
var coordsText = svg.append('text')
.style("text-anchor", "end")
.attr("class", "coords")
.attr("x", width - 5)
.attr("y", 15);
svg.append("rect")
.attr("class", "pane")
.attr("width", width)
.attr("height", height)
.call(zoom);
svg.append("clipPath")
.attr("id", "clip")
.append("rect")
.attr("x", 0)
.attr("y", y(1))
.attr("width", width)
.attr("height", y(0) - y(1));
var ohlcAnnotation = techan.plot.axisannotation()
.axis(yAxis)
.format(d3.format(',.2fs'));
var ohlcRightAnnotation = techan.plot.axisannotation()
.axis(yRightAxis)
.translate([width, 0]);
var timeAnnotation = techan.plot.axisannotation()
.axis(xAxis)
.format(d3.time.format('%Y-%m-%d'))
.width(65)
.translate([0, height]);
var timeTopAnnotation = techan.plot.axisannotation()
.axis(xTopAxis);
var crosshair = techan.plot.crosshair()
.xScale(x)
.yScale(y)
.xAnnotation([timeAnnotation, timeTopAnnotation])
.yAnnotation([ohlcAnnotation, ohlcRightAnnotation])
.on("enter", enter)
.on("out", out)
.on("move", move);
var ohlcSelection = svg.append("g")
.attr("class", "ohlc")
.attr("transform", "translate(0,0)");
ohlcSelection.append("g")
.attr("class", "indicator ema ma-0")
.attr("clip-path", "url(#ohlcClip)");
ohlcSelection.append("g")
.attr("class", "indicator ema ma-1")
.attr("clip-path", "url(#ohlcClip)");
var _data = [];
<?php
if (!isset($_REQUEST['data'])) {
$end = '});';
?>
d3.json("/json_feed.php", function (error, data) {
<?php
} else {
$end = '};';
?>
init(<?=urldecode($_REQUEST['data'])?>);
function init(data) {
<?php } ?>
var accessor = ohlc.accessor();
_data = data.slice(-150).map(function (d) {
return {
timekey: d.TimeKey,
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(_data.map(accessor.d));
y.domain(techan.scale.plot.ohlc(_data, accessor).domain());
svg.append("g")
.datum(_data)
.attr("class", "candlestick")
.attr("clip-path", "url(#clip)")
.call(ohlc);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text("Price");
svg.append('g')
.attr("class", "crosshair")
.call(crosshair);
svg.append("g")
.attr("class", "y annotation right")
.datum([_data[(_data.length - 1)].close])
.call(ohlcRightAnnotation);
svg.append("g")
.attr("class", "y axis")
.attr("transform", "translate(" + width + ",0)")
.call(yRightAxis);
svg.select("g.ema.ma-0").datum(ema0Calculator(_data));
svg.select("g.ema.ma-1").datum(ema1Calculator(_data));
// Associate the zoom with the scale after a domain has been applied
zoom.x(x.zoomable().clamp(false)).y(y);
<?php
echo $end."\n";
?>
function plotNewData(NewData) {
var accessor = ohlc.accessor(),
key = _data.length - 1;
if (typeof _data[key] != 'undefined' && _data[key].timekey === NewData.timekey) {
_data[key].volume++;
_data[key].close = +NewData.bid;
if (NewData.bid > _data[key].high) {
_data[key].high = +NewData.bid;
} else if (NewData.bid < _data[key].low) {
_data[key].low = +NewData.bid;
}
} else {
_data.push({
timekey: NewData.timekey,
date: parseDate(NewData.date),
open: +NewData.bid,
high: +NewData.bid,
low: +NewData.bid,
close: +NewData.bid,
volume: 1
});
}
svg.select("g.candlestick").datum(_data).call(ohlc);
svg.select("g.annotation.right").datum([_data[(_data.length - 1)].close]).call(ohlcRightAnnotation);
//svg.select("g.annotation.right").datum([_data[(_data.length - 1)]]);
refreshIndicator(svg.select("g.ema.ma-0"), ema0, ema0Calculator(_data));
refreshIndicator(svg.select("g.ema.ma-1"), ema1, ema1Calculator(_data));
x.domain(_data.map(accessor.d));
y.domain(techan.scale.plot.ohlc(_data, accessor).domain());
}
function refreshIndicator(selection, indicator, data) {
var datum = selection.datum();
// Some trickery to remove old and insert new without changing array reference,
// so no need to update __data__ in the DOM
datum.splice.apply(datum, [0, datum.length].concat(data));
selection.call(indicator);
}
function draw() {
svg.select("g.candlestick").call(ohlc);
svg.select("g.x.axis").call(xAxis);
svg.select("g.y.axis").call(yAxis)
}
function enter() {
coordsText.style("display", "inline");
}
function out() {
coordsText.style("display", "none");
}
function move(coords) {
coordsText.text(
timeAnnotation.format()(coords[0]) + ", " + ohlcAnnotation.format()(coords[1])
);
}
</script>
</body>
</html>