MTGeoJSONSource

public class MTGeoJSONSource : MTSource, @unchecked Sendable, Codable

A geojson source.

  • Unique id of the source.

    Declaration

    Swift

    public var identifier: String
  • url

    URL pointing to the geojson resource.

    Declaration

    Swift

    public var url: URL?

  • Type of the source.

    Declaration

    Swift

    public private(set) var type: MTSourceType { get }

  • Attribution to be displayed when the map is shown to a user.

    Declaration

    Swift

    public var attribution: String?

  • Size of the tile buffer on each side.

    Optional number between 0 and 512 inclusive. 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.

    Note

    Defaults to 128.

    Declaration

    Swift

    public var buffer: Int?

  • If the data is a collection of point features, sets the points by radius into groups.

    Note

    Defaults to false.

    Declaration

    Swift

    public var isCluster: Bool

  • 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).

    Declaration

    Swift

    public var clusterMaxZoom: Double?

  • Radius of each cluster if clustering is enabled.

    A value of 512 indicates a radius equal to the width of a tile.

    Note

    Defaults to 50.

    Declaration

    Swift

    public var clusterRadius: Double?

  • Maximum zoom level at which to create vector tiles.

    Higher value means greater detail at high zoom levels.

    Note

    Defaults to 18.

    Declaration

    Swift

    public var maxZoom: Double?

  • Douglas-Peucker simplification tolerance.

    Higher value means simpler geometries and faster performance.

    Note

    Defaults to 0.375

    Declaration

    Swift

    public var tolerance: Double?

  • Specifices whether to calculate line distance metrics

    Declaration

    Swift

    public var lineMetrics: Bool?

  • Initializes the source with unique id and url to TileJSON resource.

    Declaration

    Swift

    public init(identifier: String, url: URL)

  • Initializes the source with all the options.

    Declaration

    Swift

    public init(
    identifier: String,
    url: URL? = nil,
    attribution: String? = nil,
    buffer: Int? = 128,
    isCluster: Bool = false,
    clusterMaxZoom: Double? = nil,
    clusterRadius: Double? = 50,
    maxZoom: Double? = 18,
    tolerance: Double? = 0.375,
    lineMetrics: Bool? = false
)

  • Initializes the source from the decoder.

    Declaration

    Swift

    public required init(from decoder: any Decoder) throws

  • Declaration

    Swift

    public func encode(to encoder: Encoder) throws

  • Sets the data of the source.

    Used for updating the source data.

    Declaration

    Swift

    @available(iOS, deprecated: 16.0, message: "Prefer the async version for modern concurrency handling")
@MainActor
public func setData(data: URL, in mapView: MTMapView, completionHandler: ((Result<Void, MTError>) -> Void)? = nil)

    Parameters

    data

    url to GeoJSON resource.
    mapView

    MTMapView which holds the source.
    completionHandler

    A handler block to execute when function finishes.
  • setData(data:in:) Asynchronous

    Sets the data of the source.

    Used for updating the source data.

    Declaration

    Swift

    @MainActor
public func setData(data: URL, in mapView: MTMapView) async

    Parameters

    data

    url to GeoJSON resource.
    mapView

    MTMapView which holds the source.

  • Adds source to map DSL style.

    Prefer addSource(_:) on MTMapView instead.

    Declaration

    Swift

    public func addToMap(_ mapView: MTMapView)