GeoJsonSource

fun GeoJsonSource(builder: GeoJsonSource.Builder)

Builder

class Builder(sourceId: String)

Builder for GeoJsonSource.

Companion

object Companion

Static variables and methods.

bindTo

open override fun bindTo(delegate: StyleInterface)

Add the source to the Style.

data

fun data(value: String): GeoJsonSource

A URL to a GeoJSON file, or inline GeoJSON.

feature

fun feature(value: Feature): GeoJsonSource

Add a Feature to the GeojsonSource. Data will be parsed from collection to String in a worker thread and use main thread to pass this data to gl-native.

featureCollection

fun featureCollection(value: FeatureCollection): GeoJsonSource

Add a Feature Collection to the GeojsonSource. Data will be parsed from collection to String in a worker thread and use main thread to pass this data to gl-native.

geometry

fun geometry(value: Geometry): GeoJsonSource

Add a Geometry to the GeojsonSource. Data will be parsed from collection to String in a worker thread and use main thread to pass this data to gl-native.

prefetchZoomDelta

fun prefetchZoomDelta(value: Long = 4L): GeoJsonSource

When loading a map, if PrefetchZoomDelta is set to any number greater than 0, the map will first request a tile at zoom level lower than zoom - delta, but so that the zoom level is multiple of delta, in an attempt to display a full map at lower resolution as quick as possible. It will get clamped at the tile source minimum zoom. The default delta is 4.

toString

open override fun toString(): String

Returns a human readable string that includes the cached properties of the source.

url

fun url(value: String): GeoJsonSource

A URL to a GeoJSON file, or inline GeoJSON.

attribution

val attribution: String?

Contains an attribution to be displayed when the map is shown to a user.

buffer

val buffer: Long?

Size of the tile buffer on each side. A value of 0 produces no buffer. A value of 512 produces a buffer as wide as the tile itself. Larger values produce fewer rendering artifacts near tile edges and slower performance.

cluster

val cluster: Boolean?

If the data is a collection of point features, setting this to true clusters the points by radius into groups. Cluster groups become new Point features in the source with additional properties:

clusterMaxZoom

val clusterMaxZoom: Long?

Max zoom on which to cluster points if clustering is enabled. Defaults to one zoom less than maxzoom (so that last zoom features are not clustered). Clusters are re-evaluated at integer zoom levels so setting clusterMaxZoom to 14 means the clusters will be displayed until z15.

clusterProperties

val clusterProperties: HashMap<String, Any>?

An object defining custom properties on the generated clusters if clustering is enabled, aggregating values from clustered points. Has the form {"property_name": [operator, map_expression]}. operator is any expression function that accepts at least 2 operands (e.g. "+" or "max") — it accumulates the property value from clusters/points the cluster contains; map_expression produces the value of a single point.

clusterRadius

val clusterRadius: Long?

Radius of each cluster if clustering is enabled. A value of 512 indicates a radius equal to the width of a tile.

data

val data: String?

A URL to a GeoJSON file, or inline GeoJSON.

generateId

val generateId: Boolean?

Whether to generate ids for the geojson features. When enabled, the feature.id property will be auto assigned based on its index in the features array, over-writing any previous values.

lineMetrics

val lineMetrics: Boolean?

Whether to calculate line distance metrics. This is required for line layers that specify line-gradient values.

maxzoom

val maxzoom: Long?

Maximum zoom level at which to create vector tiles (higher means greater detail at high zoom levels).

prefetchZoomDelta

val prefetchZoomDelta: Long?

When loading a map, if PrefetchZoomDelta is set to any number greater than 0, the map will first request a tile at zoom level lower than zoom - delta, but so that the zoom level is multiple of delta, in an attempt to display a full map at lower resolution as quick as possible. It will get clamped at the tile source minimum zoom. The default delta is 4.

promoteId

val promoteId: PromoteId?

A property to use as a feature id (for feature state). Either a property name, or an object of the form {<sourceLayer>: <propertyName>}.

sourceId

val sourceId: String

The ID of the Source.

tolerance

val tolerance: Double?

Douglas-Peucker simplification tolerance (higher means simpler geometries and faster performance).

GeoJsonSource

See also

Constructors

Types

Functions

Properties