Class DefaultClusterGenerator

Default cluster generator. Group data items using distance between 2 locations in degrees.

Inheritance
System.Object
DefaultClusterGenerator
Namespace: Telerik.Windows.Controls.Map
Assembly: Telerik.Windows.Controls.DataVisualization.dll

Syntax

public class DefaultClusterGenerator : Object, IClusterGenerator

Constructors

DefaultClusterGenerator()

Initializes a new instance of the DefaultClusterGenerator class.

Declaration
public DefaultClusterGenerator()

Properties

AutoExpandWhenSingle

Gets or sets value which indicates whether cluster should be automatically expanded when it contains 1 data item only.

Declaration
public bool AutoExpandWhenSingle { get; set; }
Property Value
System.Boolean

CloseDistance

Gets or sets array of the doubles which define close distance between 2 locations in degrees for every zoom level.

Declaration
public double[] CloseDistance { get; set; }
Property Value
System.Double[]

Remarks

If distance between 2 locations for the given zoom level is less than value in the array, then we consider these 2 locations as close ones. Close locations should be combined into 1 cluster.

DeleteWhenEmpty

Gets or sets value which indicates whether cluster should be deleted if it is empty.

Declaration
public bool DeleteWhenEmpty { get; set; }
Property Value
System.Boolean

ExpandRadius

Gets or sets radius (in pixels) which will be used to calculate coordinates of the items when cluster is expanded to the polygon vertices.

Declaration
public double ExpandRadius { get; set; }
Property Value
System.Double

HideExpanded

Indicates whether expanded cluster should be hidden.

Declaration
public bool HideExpanded { get; set; }
Property Value
System.Boolean

Layer

Information layer this map canvas belongs to.

Declaration
public VisualizationLayer Layer { get; set; }
Property Value
VisualizationLayer

Implements

Methods

CreateCluster(Location, Object)

Creates cluster at the specified location.

Declaration
public virtual ClusterData CreateCluster(Location center, object item)
Parameters
Location center

Center of the cluster.
System.Object item

Data item which initialized creation of the cluster.
Returns
ClusterData

New cluster item.
Implements

IsItemInClusterRegion(ClusterData, MapObjectInfo, Int32)

Detects whether given original data item belongs to the region of the specified cluster.

Declaration
public virtual bool IsItemInClusterRegion(ClusterData cluster, MapObjectInfo info, int zoomLevel)
Parameters
ClusterData cluster

Cluster.
MapObjectInfo info

Map object information.
System.Int32 zoomLevel

Zoom level.
Returns
System.Boolean

true - if data item belongs to the region of the specified cluster.
Implements

RegenerationNeeded(ClusterData, Int32)

Detects whether cluster should be regenerated for the given zoom level.

Declaration
public virtual bool RegenerationNeeded(ClusterData cluster, int zoomLevel)
Parameters
ClusterData cluster

Cluster.
System.Int32 zoomLevel

Zoom level.
Returns
System.Boolean

true - if cluster should be regenerated at the given zoom level, otherwise false.
Implements

Extension Methods