# Map Layer Reference

A map layer renders geospatial data on a map. Use the <flow-map-layer> component to add a layer to a Flo.w RDF map.

The text content of the <flow-map-layer> component is used to specify layer styling properties using a CSS-like language of property/value pairs. For example:

<flow-map-layer type="circle" ...>
  circle-color: red;
  circle-radius: @prop1 * 10;
</flow-map-layer>

Property values are specified using Flo.w reactive expressions that can access map feature properties and reactive application state.

The following layer types are supported: