HeatmapLayer class final

A heatmap.

Inheritance

Constructors

HeatmapLayer.new({required String id, Visibility? visibility, List<Object>? visibilityExpression, List<Object>? filter, double? minZoom, double? maxZoom, String? slot, required String sourceId, String? sourceLayer, int? heatmapColor, List<Object>? heatmapColorExpression, double? heatmapIntensity, List<Object>? heatmapIntensityExpression, double? heatmapOpacity, List<Object>? heatmapOpacityExpression, double? heatmapRadius, List<Object>? heatmapRadiusExpression, double? heatmapWeight, List<Object>? heatmapWeightExpression})

Properties

filter ↔ List<Object>?
Expression specifying conditions on source features. Only features that match the filter are displayed.
getter/setter pairinherited
hashCode → int
The hash code for this object.
no setterinherited
heatmapColor ↔ int?
Defines the color of each pixel based on its density value in a heatmap. Should be an expression that uses ["heatmap-density"] as input. Default value: ["interpolate","linear","heatmap-density",0,"rgba(0, 0, 255, 0)",0.1,"royalblue",0.3,"cyan",0.5,"lime",0.7,"yellow",1,"red"].
getter/setter pair
heatmapColorExpression ↔ List<Object>?
Defines the color of each pixel based on its density value in a heatmap. Should be an expression that uses ["heatmap-density"] as input. Default value: ["interpolate","linear","heatmap-density",0,"rgba(0, 0, 255, 0)",0.1,"royalblue",0.3,"cyan",0.5,"lime",0.7,"yellow",1,"red"].
getter/setter pair
heatmapIntensity ↔ double?
Similar to heatmap-weight but controls the intensity of the heatmap globally. Primarily used for adjusting the heatmap based on zoom level. Default value: 1. Minimum value: 0.
getter/setter pair
heatmapIntensityExpression ↔ List<Object>?
Similar to heatmap-weight but controls the intensity of the heatmap globally. Primarily used for adjusting the heatmap based on zoom level. Default value: 1. Minimum value: 0.
getter/setter pair
heatmapOpacity ↔ double?
The global opacity at which the heatmap layer will be drawn. Default value: 1. Value range: 0, 1
getter/setter pair
heatmapOpacityExpression ↔ List<Object>?
The global opacity at which the heatmap layer will be drawn. Default value: 1. Value range: 0, 1
getter/setter pair
heatmapRadius ↔ double?
Radius of influence of one heatmap point in pixels. Increasing the value makes the heatmap smoother, but less detailed. queryRenderedFeatures on heatmap layers will return points within this radius. Default value: 30. Minimum value: 1. The unit of heatmapRadius is in pixels.
getter/setter pair
heatmapRadiusExpression ↔ List<Object>?
Radius of influence of one heatmap point in pixels. Increasing the value makes the heatmap smoother, but less detailed. queryRenderedFeatures on heatmap layers will return points within this radius. Default value: 30. Minimum value: 1. The unit of heatmapRadius is in pixels.
getter/setter pair
heatmapWeight ↔ double?
A measure of how much an individual point contributes to the heatmap. A value of 10 would be equivalent to having 10 points of weight 1 in the same spot. Especially useful when combined with clustering. Default value: 1. Minimum value: 0.
getter/setter pair
heatmapWeightExpression ↔ List<Object>?
A measure of how much an individual point contributes to the heatmap. A value of 10 would be equivalent to having 10 points of weight 1 in the same spot. Especially useful when combined with clustering. Default value: 1. Minimum value: 0.
getter/setter pair
id ↔ String
The ID of the Layer.
getter/setter pairinherited
maxZoom ↔ double?
Maximum zoom level. At zoom levels equal to or greater than this, the layer is hidden. Range: 0 to 24.
getter/setter pairinherited
minZoom ↔ double?
Minimum zoom level. At zoom levels less than this, the layer is hidden. Range: 0 to 24.
getter/setter pairinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
slot ↔ String?
The slot this layer is assigned to. If specified and a slot with that name exists, the layer is placed at that slot's position in the layer order.
getter/setter pairinherited
sourceId ↔ String
The id of the source.
getter/setter pair
sourceLayer ↔ String?
A source layer is an individual layer of data within a vector source. A vector source can have multiple source layers.
getter/setter pair
visibility ↔ Visibility?
The visibility of the layer.
getter/setter pairinherited
visibilityExpression ↔ List<Object>?
The visibility of the layer, expressed as a style expression.
getter/setter pairinherited

Methods

getType() → String
Returns the layer's type as a String (e.g. "fill", "line").
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

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

Static Methods

decode(String properties) → HeatmapLayer