CandleStickChartWithHoverTooltip with react-stockcharts

.block

license: MIT
height: 420

README.md

TEST

CandleStickChartWithHoverTooltip.jsx

"use strict";
var { ChartCanvas, Chart, series, scale, coordinates, tooltip, axes, indicator, helper } = ReStock;

var { CandlestickSeries, BarSeries, LineSeries, AreaSeries } = series;
var { discontinuousTimeScaleProvider } = scale;

var { EdgeIndicator } = coordinates;
var { CurrentCoordinate } = coordinates;

var { OHLCTooltip, MovingAverageTooltip, HoverTooltip } = tooltip;
var { XAxis, YAxis } = axes;
var { ema, sma } = indicator;
var { fitWidth, TypeChooser } = helper;

var dateFormat = d3.timeFormat("%Y-%m-%d");
var numberFormat = d3.format(".2f");

function tooltipContent(calculators) {
	return ({ currentItem, xAccessor }) => {
		return {
			x: dateFormat(xAccessor(currentItem)),
			y: [
				{ label: "open", value: currentItem.open && numberFormat(currentItem.open) },
				{ label: "high", value: currentItem.high && numberFormat(currentItem.high) },
				{ label: "low", value: currentItem.low && numberFormat(currentItem.low) },
				{ label: "close", value: currentItem.close && numberFormat(currentItem.close) },
			]
			.concat(calculators.map(each => ({
				label: each.tooltipLabel(),
				value: numberFormat(each.accessor()(currentItem)),
				stroke: each.stroke()
			})))
			.filter(line => line.value)
		};
	};
}

const keyValues = ["high", "low", "open"];

class CandleStickChartWithHoverTooltip extends React.Component {

	removeRandomValues(data) {
		return data.map((item) => {
			const numberOfDeletion = Math.floor(Math.random() * keyValues.length) + 1;
			for (let i = 0; i < numberOfDeletion; i += 1){
				const randomKey = keyValues[Math.floor(Math.random() * keyValues.length)];
				item[randomKey] = undefined;
			}
			return item;
		});
	}

	render() {
		var { data, type, width, ratio } = this.props;

		// remove some of the data to be able to see
		// the tooltip resize
		data = this.removeRandomValues(data);

		var ema20 = ema()
			.id(0)
			.windowSize(20)
			.merge((d, c) => {d.ema20 = c;})
			.accessor(d => d.ema20);

		var ema50 = ema()
			.id(2)
			.windowSize(50)
			.merge((d, c) => {d.ema50 = c;})
			.accessor(d => d.ema50);

		var margin = { left: 80, right: 80, top: 30, bottom: 50 };

		return (
			<ChartCanvas ratio={ratio} height={400}
					width={width}
					margin={margin}
					type={type}
					seriesName="MSFT"
					data={data}
					calculator={[ema20, ema50]}
					xAccessor={d => d.date}
					xScaleProvider={discontinuousTimeScaleProvider}
					xExtents={[new Date(2015, 0, 1), new Date(2015, 5, 8)]}>

				<Chart id={1}
						yExtents={[d => [d.high, d.low], ema20.accessor(), ema50.accessor()]}
						padding={{ top: 10, bottom: 20 }}>
					<XAxis axisAt="bottom" orient="bottom"/>

					<YAxis axisAt="right" orient="right" ticks={5} />

					<CandlestickSeries />
					<LineSeries yAccessor={ema20.accessor()} stroke={ema20.stroke()}/>
					<LineSeries yAccessor={ema50.accessor()} stroke={ema50.stroke()}/>

					<EdgeIndicator itemType="last"
						orient="right"
						edgeAt="right"
						yAccessor={d => d.close}
						fill={d => d.close > d.open ? "#6BA583" : "#FF0000"}/>

				</Chart>
				<Chart id={2}
						yExtents={[d => d.volume]}
						height={150} origin={(w, h) => [0, h - 150]}>
					<YAxis axisAt="left" orient="left" ticks={5} tickFormat={d3.format(".0s")}/>

					<BarSeries yAccessor={d => d.volume} fill={d => d.close > d.open ? "#6BA583" : "#FF0000"} />
				</Chart>
				<HoverTooltip
					chartId={1}
					yAccessor={ema50.accessor()}
					tooltipContent={tooltipContent([ema20, ema50])}
					fontSize={15} />
			</ChartCanvas>
		);
	}
}

CandleStickChartWithHoverTooltip.propTypes = {
	data: React.PropTypes.array.isRequired,
	width: React.PropTypes.number.isRequired,
	ratio: React.PropTypes.number.isRequired,
	type: React.PropTypes.oneOf(["svg", "hybrid"]).isRequired,
};

CandleStickChartWithHoverTooltip.defaultProps = {
	type: "svg",
};
CandleStickChartWithHoverTooltip = fitWidth(CandleStickChartWithHoverTooltip);


var parseDate = d3.timeParse("%Y-%m-%d %H:%M:%S");
d3["tsv"]("//rrag.github.io/react-stockcharts/data/MSFT.tsv", (err, data) => {
	/* change MSFT.tsv to MSFT_full.tsv above to see how this works with lots of data points */
	data.forEach((d, i) => {
		d.date = new Date(d3.timeParse("%Y-%m-%d")(d.date).getTime());
		d.open = +d.open;
		d.high = +d.high;
		d.low = +d.low;
		d.close = +d.close;
		d.volume = +d.volume;
		// console.log(d);
	});
	/* change the type from hybrid to svg to compare the performance between svg and canvas */
	ReactDOM.render(<TypeChooser type="hybrid">{type => <CandleStickChartWithHoverTooltip data={data} type={type} />}</TypeChooser>, document.getElementById("chart"));
});

index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>React Stockcharts - CandleStickChartWithHoverTooltip Example</title>

    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet">
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.2.7/d3.min.js"></script>
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/react/15.3.2/react.min.js"></script>
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/react/15.3.2/react-dom.min.js"></script>
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.17.0/babel.min.js"></script>

    <!-- <script type="text/javascript" src="//unpkg.com/react-stockcharts@latest/dist/react-stockcharts.min.js"></script> -->
    <script type="text/javascript" src="//rrag.github.io/react-stockcharts/dist/react-stockcharts.min.js"></script>
  </head>
  <body>
    <span id="iconPreload" class="glyphicon glyphicon-arrow-down"></span>
    <div id="chart">
    </div>
    <script>
      // Use babel transform so the examples work on the browser
      d3.request("./CandleStickChartWithHoverTooltip.jsx")
        .get(function(err, data) {
          var outputEl = document.getElementById('chart');
          try {
            var output = Babel.transform(data.responseText, { presets: ["es2015", "react", "stage-3"] }).code;
            eval(output);
          } catch (ex) {
            outputEl.innerHTML = 'ERROR: ' + ex.message;
          }
        })
    </script>
  </body>
</html>