78 lines
2.4 KiB
HTML
Executable File
78 lines
2.4 KiB
HTML
Executable File
<!DOCTYPE HTML>
|
|
<html>
|
|
<head>
|
|
<script type="text/javascript" src="https://canvasjs.com/assets/script/jquery-1.11.1.min.js"></script>
|
|
<script type="text/javascript" src="../../canvasjs.stock.min.js"></script>
|
|
<script type="text/javascript">
|
|
window.onload = function () {
|
|
var dps1 = [], dps2= [];
|
|
var stockChart = new CanvasJS.StockChart("chartContainer",{
|
|
theme: "light2",
|
|
title:{
|
|
text:"Technical Indicators: EMA"
|
|
},
|
|
subtitles: [{
|
|
text: "Exponential Moving Average"
|
|
}],
|
|
charts: [{
|
|
axisY: {
|
|
prefix: "$"
|
|
},
|
|
toolTip: {
|
|
shared: true
|
|
},
|
|
legend: {
|
|
cursor: "pointer",
|
|
verticalAlign: "top",
|
|
itemclick: function (e) {
|
|
if (typeof (e.dataSeries.visible) === "undefined" || e.dataSeries.visible) {
|
|
e.dataSeries.visible = false;
|
|
} else {
|
|
e.dataSeries.visible = true;
|
|
}
|
|
e.chart.render();
|
|
}
|
|
},
|
|
data: [{
|
|
type: "candlestick",
|
|
name: "Stock Price",
|
|
showInLegend: true,
|
|
yValueFormatString: "$#,###.##",
|
|
xValueType: "dateTime",
|
|
dataPoints : dps1
|
|
}],
|
|
}],
|
|
navigator: {
|
|
data: [{
|
|
dataPoints: dps2
|
|
}],
|
|
slider: {
|
|
minimum: new Date(2018, 03, 01),
|
|
maximum: new Date(2018, 05, 01)
|
|
}
|
|
}
|
|
});
|
|
$.getJSON("https://canvasjs.com/data/docs/ethusd2018.json", function(data) {
|
|
for(var i = 0; i < data.length; i++){
|
|
dps1.push({x: new Date(data[i].date), y: [Number(data[i].open), Number(data[i].high), Number(data[i].low), Number(data[i].close)]});
|
|
dps2.push({x: new Date(data[i].date), y: Number(data[i].close)});
|
|
}
|
|
stockChart.render();
|
|
var ema = calculateEMA(dps1, 7);
|
|
stockChart.charts[0].addTo("data", {type: "line", name: "EMA", showInLegend: true, yValueFormatString: "$#,###.##", dataPoints: ema});
|
|
});
|
|
function calculateEMA(dps,count) {
|
|
var k = 2/(count + 1);
|
|
var emaDps = [{x: dps[0].x, y: dps[0].y.length ? dps[0].y[3] : dps[0].y}];
|
|
for (var i = 1; i < dps.length; i++) {
|
|
emaDps.push({x: dps[i].x, y: (dps[i].y.length ? dps[i].y[3] : dps[i].y) * k + emaDps[i - 1].y * (1 - k)});
|
|
}
|
|
return emaDps;
|
|
}
|
|
}
|
|
</script>
|
|
</head>
|
|
<body>
|
|
<div id="chartContainer" style="height: 400px; max-width: 920px; margin: 0px auto;"></div>
|
|
</body>
|
|
</html> |