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:
-
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.
Also known as Bar Graph, Column Chart or Column Graph
This example shows the most basic usage of LightningChart JS BarChart.
Bar Charts show discrete numerical comparisons across categories, where the value represents the height of a bar.
LightningChart JS includes a very simple high level feature for creating interactive Bar Charts and supplying them with categorical data:
const barChart = lightningChart().BarChart()
const data = [
{ category: 'Jan', value: 20 },
{ category: 'Feb', value: 20 },
{ category: 'Mar', value: -25 },
{ category: 'Apr', value: 40 },
{ category: 'May', value: 28 },
{ category: 'Jun', value: -23 },
{ category: 'Jul', value: -40 },
{ category: 'Aug', value: 35 },
{ category: 'Sep', value: 17 },
{ category: 'Oct', value: 24 },
{ category: 'Nov', value: -29 },
{ category: 'Dec', value: 15 },
]
barChart.setData(data)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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