@deck.gl/extensions

What is @deck.gl/extensions?

@deck.gl/extensions is a collection of extensions for the deck.gl library, which is used for creating high-performance, WebGL-powered visualizations. These extensions provide additional functionalities such as data filtering, 3D terrain, and advanced rendering techniques.

What are @deck.gl/extensions's main functionalities?

Data Filtering

The DataFilterExtension allows you to filter data points based on a specified range. This is useful for visualizing subsets of data dynamically.

const { DataFilterExtension } = require('@deck.gl/extensions');

const layer = new ScatterplotLayer({
  data: myData,
  getPosition: d => d.coordinates,
  getRadius: d => d.radius,
  getColor: d => d.color,
  extensions: [new DataFilterExtension({filterSize: 1})],
  filterRange: [0, 100]
});

3D Terrain

The TerrainExtension allows you to overlay 2D tiles on 3D terrain, providing a more realistic visualization of geographical data.

const { TerrainExtension } = require('@deck.gl/extensions');

const layer = new TileLayer({
  data: 'https://tile-server.com/tiles/{z}/{x}/{y}.png',
  minZoom: 0,
  maxZoom: 23,
  tileSize: 256,
  renderSubLayers: props => new BitmapLayer(props),
  extensions: [new TerrainExtension({terrainImage: 'https://terrain-server.com/terrain.png',
                                      terrainBounds: [west, south, east, north]})]
});

Advanced Rendering

The BrushingExtension allows for interactive data brushing, where users can highlight and filter data points within a specified radius.

const { BrushingExtension } = require('@deck.gl/extensions');

const layer = new ScatterplotLayer({
  data: myData,
  getPosition: d => d.coordinates,
  getRadius: d => d.radius,
  getColor: d => d.color,
  extensions: [new BrushingExtension()],
  brushingRadius: 1000,
  brushingTarget: [longitude, latitude]
});

Other packages similar to @deck.gl/extensions

three

Three.js is a popular JavaScript library for creating 3D graphics in the browser. While it provides a lower-level API compared to deck.gl, it offers extensive functionalities for 3D rendering, including support for various geometries, materials, and lighting effects.

leaflet

Leaflet is a widely-used open-source JavaScript library for interactive maps. It is more focused on 2D map visualizations and offers a variety of plugins for additional functionalities, such as heatmaps and marker clustering. Unlike deck.gl, it does not natively support WebGL-based 3D visualizations.

d3

D3.js is a powerful JavaScript library for producing dynamic, interactive data visualizations in web browsers. It uses SVG, HTML, and CSS to bring data to life. While it is not specifically designed for 3D or map visualizations, it is highly flexible and can be extended to create complex visualizations.

README

@deck.gl/extensions

Optional functionalities for deck.gl layers.

See deck.gl for documentation.

Changelog

deck.gl [v9.1.0-beta.3] - Jan 15 2025

• CARTO: Support gzip compression in RasterLayer (#9352)
• DataFilterExtension category filtering uint32 attribute (#9350)