API Reference > imodeljs-frontend > Views > MarkerSet MarkerSet<T extends Marker> Class A set of Markers that are logically related, such that they cluster when they overlap one another in screen space. In that case, a cluster marker is drawn instead of the overlapping Markers. Methods Name Description constructor<T extends Marker<T>>(viewport?: ScreenViewport): MarkerSet<T> Construct a new MarkerSet for a specific ScreenViewport. addDecoration(context: DecorateContext): void This method should be called from Decorator.decorate. changeViewport(viewport: ScreenViewport): void Change the ScreenViewport for this MarkerSet. Beta getClusterMarker(cluster: Cluster<T>): Marker ProtectedAbstract Implement this method to create a new Marker that is shown as a stand-in for a Cluster of Markers that overlap one another. getMinScaleViewW(vp: Viewport): number Get weight value limit establishing the distance from camera for the back of view scale factor. markDirty(): void Indicate that this MarkerSet has been changed and is now dirty. Properties Name Type Description markers Accessor ReadOnly Set<T> The set of Markers in this MarkerSet. minimumClusterSize number The minimum number of Markers that must overlap before they are clustered. viewport Accessor ReadOnly undefined | ScreenViewport The ScreenViewport of this MarkerSet. Defined in core/frontend/src/Marker.ts Line 323 Last Updated: 11 June, 2024