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
-
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 how to create a sweeping update effect in 2D Heatmap Chart with LightningChart JS.
This is done by using HeatmapGridSeries (static size 2D heatmap) and writing on top of previous heatmap values in sweeping motion.
This behavior is preferred by some users, mostly since the chart gives real-time visualization but at the same time is immobile.
For alternate approach with scrolling data appending, see our scrolling heatmap example.
Scrolling approach is generally encouraged since it interacts much nicer with scrolling Axis ticks, which as can be seen from the scrolling heatmap example - looks really nice with live data!
Performance-wise there is not much difference between the two - both operations are optimized to the maximum!
- Scrolling Heatmap Grid Series
- Paletted Fill Style
- Color lookup table
- Color factory HSV
- Empty line style
- Axis automatic scroll options
- Chart XY
- Axis XY
- Legend Box
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.
© LightningChart Ltd 2009-2022. All rights reserved.