Mapgl Js Api «2024»

The style is composed of layers, processed in a specific order (bottom to top: background, then polygon, then line, then symbol). Each layer has a (where the vector data comes from) and a set of paint and layout properties.

This simple constructor belies the complex WebGL pipeline it initiates. The API abstracts away shader compilation, tile fetching, and camera matrix math, providing a clean interface for complex 3D cartography. If the engine is WebGL, the soul of MapLibre GL JS is its Style Specification – a JSON document that dictates absolutely everything about the map’s appearance. This specification is declarative, powerful, and deeply extensible. mapgl js api

The third, and most powerful, pillar is . Using map.queryRenderedFeatures() , you can click anywhere on the map and instantly retrieve all the vector data underlying that pixel. This enables the classic "hover to highlight" or "click for info" functionality without needing a separate backend database lookup. The style is composed of layers, processed in

For example: