GeojsonSourceProperties class

Implemented types


GeojsonSourceProperties({Object? data, double? maxzoom = 18, String? attribution, double? buffer = 128, double? tolerance = 0.375, bool? cluster = false, double? clusterRadius = 50, double? clusterMaxZoom, Object? clusterProperties, bool? lineMetrics = false, bool? generateId = false, String? promoteId})
GeojsonSourceProperties.fromJson(Map<String, dynamic> json)


attribution String?
Contains an attribution to be displayed when the map is shown to a user.
buffer double?
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 bool?
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 double?
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).
clusterProperties Object?
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.Example: {"sum": ["+", ["get", "scalerank"]]}.For more advanced use cases, in place of operator, you can use a custom reduce expression that references a special ["accumulated"] value, e.g.:{"sum": [["+", ["accumulated"], ["get", "sum"]], ["get", "scalerank"]]}
clusterRadius double?
Radius of each cluster if clustering is enabled. A value of 512 indicates a radius equal to the width of a tile.
data Object?
A URL to a GeoJSON file, or inline GeoJSON.
generateId bool?
Whether to generate ids for the geojson features. When enabled, the property will be auto assigned based on its index in the features array, over-writing any previous values.
hashCode int
The hash code for this object.
no setterinherited
lineMetrics bool?
Whether to calculate line distance metrics. This is required for line layers that specify line-gradient values.
maxzoom double?
Maximum zoom level at which to create vector tiles (higher means greater detail at high zoom levels).
promoteId String?
A property to use as a feature id (for feature state). Either a property name, or an object of the form {<sourceLayer>: <propertyName>}.
runtimeType Type
A representation of the runtime type of the object.
no setterinherited
tolerance double?
Douglas-Peucker simplification tolerance (higher means simpler geometries and faster performance).


copyWith(Object? data, double? maxzoom, String? attribution, double? buffer, double? tolerance, bool? cluster, double? clusterRadius, double? clusterMaxZoom, Object? clusterProperties, bool? lineMetrics, bool? generateId, String? promoteId) GeojsonSourceProperties
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
toJson() Map<String, dynamic>
toString() String
A string representation of this object.


operator ==(Object other) bool
The equality operator.