This demo application belongs to the set of examples for LightningChart JS, data visualization library for JavaScript.
LightningChart JS is entirely GPU accelerated and performance optimized charting library for presenting massive amounts of data. It offers an easy way of creating sophisticated and interactive charts and adding them to your website or web application.
The demo can be used as an example or a seed project. Local execution requires the following steps:
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Make sure that relevant version of Node.js is installed
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Open the project folder in a terminal:
npm install # fetches dependencies npm start # builds an application and starts the development server -
The application is available at http://localhost:8080 in your browser, webpack-dev-server provides hot reload functionality.
This example shows real-time OHLC-packing using a variant of OHLC-series.
Please note that using LightningChart JS for Trading use cases requires a special license agreement. For more information, please contact us.
LightningChart JS includes a variant of the OHLC series which allows inputting close prices only which results in the corresponding OHLC data being automatically calculated.
const chart = lightningChart().ChartXY()
const series = chart.addOHLCSeries(
// Specify the type of OHLC-series for adding points
{ seriesConstructor: OHLCSeriesTypes.AutomaticPacking },
)OHLC-series that were created with type 'AutomaticPacking' accept data the same way as any other horizontally progressive XY-series:
// Single point.
series.add({ x: 50, y: 60 })
// Multiple points at once.
series.add([
{ x: 55, y: 60 },
{ x: 60, y: 62 },
{ x: 65, y: 65 },
])Supplied points are packed by columns, within which the Y-values are mapped to open, high, low and close -values, which are used to draw OHLCFigures.
If you notice an error in the example code, please open an issue on GitHub repository of the entire example.
Official API documentation can be found on LightningChart website.
If the docs and other materials do not solve your problem as well as implementation help is needed, ask on StackOverflow (tagged lightningchart).
If you think you found a bug in the LightningChart JavaScript library, please contact sales@lightningchart.com.
Direct developer email support can be purchased through a Support Plan or by contacting sales@lightningchart.com.
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