JavaScript OHLC Chart

1import { closeValues, dateValues as xValues, highValues, lowValues, openValues } from "./data";
2import {
3    CategoryAxis,
4    ENumericFormat,
5    FastOhlcRenderableSeries,
6    MouseWheelZoomModifier,
7    NumericAxis,
8    NumberRange,
9    OhlcDataSeries,
10    SciChartSurface,
11    SmartDateLabelProvider,
12    SweepAnimation,
13    ZoomExtentsModifier,
14    ZoomPanModifier,
15    SciChartJsNavyTheme,
16} from "scichart";
17
18export const drawExample = async (rootElement: string | HTMLDivElement) => {
19    // Create a SciChartSurface
20    const { sciChartSurface, wasmContext } = await SciChartSurface.create(rootElement, {
21        theme: new SciChartJsNavyTheme(),
22    });
23
24    // Add an XAxis of type CategoryAxis - which collapses gaps in stock market data
25    // SmartLabelProvider returns useful labels for stock market data
26    sciChartSurface.xAxes.add(
27        new CategoryAxis(wasmContext, {
28            labelProvider: new SmartDateLabelProvider(),
29            growBy: new NumberRange(0.05, 0.05),
30        })
31    );
32
33    // Create a NumericAxis on the YAxis with 4 Decimal Places
34    sciChartSurface.yAxes.add(
35        new NumericAxis(wasmContext, {
36            visibleRange: new NumberRange(1.1, 1.2),
37            growBy: new NumberRange(0.1, 0.1),
38            labelFormat: ENumericFormat.Decimal,
39            labelPrecision: 4,
40        })
41    );
42
43    // Create the Ohlc series and add to the chart
44    sciChartSurface.renderableSeries.add(
45        new FastOhlcRenderableSeries(wasmContext, {
46            dataSeries: new OhlcDataSeries(wasmContext, { xValues, openValues, highValues, lowValues, closeValues }),
47            strokeThickness: 1,
48            dataPointWidth: 0.7,
49            strokeUp: "#50ff50",
50            strokeDown: "#ff5050",
51            animation: new SweepAnimation({ duration: 800, fadeEffect: true }),
52        })
53    );
54
55    // Optional: Add some interactivity modifiers
56    sciChartSurface.chartModifiers.add(
57        new ZoomExtentsModifier(),
58        new ZoomPanModifier({ enableZoom: true }),
59        new MouseWheelZoomModifier()
60    );
61
62    sciChartSurface.zoomExtents();
63    return { sciChartSurface, wasmContext };
64};
65