layer (Mapbox)

A layer in Mapbox GL JS is a visual element that displays data from a source. A layer is defined by its type, such as circle, line, fill or symbol, and contains a reference to the source it displays. A symbol layer displays text, icons, or both. Layers that reference vector tile sources contain a reference to the source layer within the vector tile styleA vector tile style is a JSON structure and accompanying resources that define how the contents of vector tiles are displayed in a client application.Learn more. They can also contain filters, which are Mapbox GL expressions that determine which individual features get displayed. Other layer types include raster, fill-extrusion, heatmap and hillshade.