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 showcases the pixel interpolation mode feature of HeatmapGridSeries.
HeatmapGridSeries comes with powerful per-pixel bilinear interpolation which smooths the data visualization by automatically interpolating intensity values and adjusting dynamic coloring accordingly.
Bilinear interpolation is a standard, well-known method in data analysis - and it also looks cool!
This example shows two HeatmapGridSeries side by side with the same data, the series on left has bilinear interpolation enabled (default) and on right it is disabled.
As can be seen, the heatmap with bilinear interpolation looks much more detailed and convincing. However, it can be useful to disable this if you need to always be sure that what you're seeing is the exact data you supplied - not some interpolated value.
// Example syntax for specifying heatmap pixel interpolation mode.
heatmapSeries.setIntensityInterpolation('disabled')
heatmapSeries.setIntensityInterpolation('bilinear')Pixel interpolation mode has no significant effect on performance.
The Heatmap on the left also showcases auto cursor interpolation, which can be enabled per-heatmap series with setCursorInterpolationEnabled(true).
- Heatmap Grid Series
- Paletted Fill Style
- Color lookup table
- Empty line style
- 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.
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