H.clustering.Provider
Class Summary
Extends: H.util.EventTarget
The clustering provider serves clusters and noise point representation for the map based on the provided data set. Levels for clustering as well as custom cluster representation can be set via Options
.
[ For full details, see the Class Details ]
Property Summary
Method Summary
Methods |
---|
This method allows to listen for specific event triggered by the object |
This method will removed previously added listener from the event target |
This method will dispatch event on the event target object |
Removes listeners from this object. Classes that extend EventTarget may need to override this method in order to remove references to DOM Elements and additional listeners. |
This method adds callback which is triggered when the object is being disposed |
This method sets a new data on the provider class. |
This method adds a data point to the provider. Note that this method triggers reclustering of the the data set associated with the provider. |
This method adds a list of data points to the provider. Note that this method triggers reclustering of the data set associated with the provider. |
This method removes a data point from the provider's data set. Note that this method triggers reclustering of the data set associated with the provider. |
This method retrieves the current theme used for cluster visualizations. |
This method sets new theme on the provider. Note that this method changes the visual representation of the displayed clusters and noise points. |
This method always returns true as we don't have information about visual representation until we have the clustering result and apply the theme. |
Returns all DomMarker cluster and noise point representations which intersect with the provided rectangular area. |
This method always returns true as we don't have information about visual representation until we have the clustering result and apply the theme. |
Returns all cluster and noise point markers which intersect with the provided rectangular area. |
This method always returns true as we don't have information about visual representation until we have the clustering result and apply the theme. |
Returns all polyline, polygon, circle and rect objects which represent cluster and noise points and intersect with the provided area. |
Returns the spatial objects which intersect the given tile |
Returns the accumulate invalidations of this provider's objects that have occurred. |
To signal to this provider that a map object has been changed. The method updates the Invalidations of this provider and the given map object and triggers dispatchUpdate() |
Class Description
The clustering provider serves clusters and noise point representation for the map based on the provided data set. Levels for clustering as well as custom cluster representation can be set via Options
.
Example
var dataPoints = [
new H.clustering.DataPoint(52, 1),
new H.clustering.DataPoint(52.1, 1)
];
var clusteringProvider = new H.clustering.Provider(dataPoints, {
clusteringOptions: {
minWeight: 1,
eps: 32
}
});
// clustering should be used with ObjectLayer
var clusteringLayer = new H.map.layer.ObjectLayer(clusteringProvider);
map.addLayer(clusteringLayer);
Constructor Details
H.clustering.Provider(dataPoints, opt_options)
- Parameters:
-
dataPoints
: -
{Array<H.clustering.DataPoint>}
- An array of objects representing data points
-
opt_options
: -
{H.clustering.Provider.Options=} [optional]
- An object containing configuration options
- Throws:
-
{H.lang.InvalidArgumentError}
- If
H.clustering.Provider.Strategy.DYNAMICGRID
strategy is used with the projection other than default H.geo.mercator projection.
Property Details
min: {number}
Minimum zoom level at which provider can cluster data
max: {number}
Maximum zoom level at which provider can cluster data
Method Details
addEventListener (type, handler, opt_capture, opt_scope)
This method allows to listen for specific event triggered by the object
- Parameters:
-
type
: -
{string}
- name of event
-
handler
: -
{!Function}
- event handler function
-
opt_capture
: -
{boolean=} [optional]
- if set to true will listen in the capture phase (bubble otherwise)
-
opt_scope
: -
{Object=} [optional]
- scope for the handler function
removeEventListener (type, handler, opt_capture, opt_scope)
This method will removed previously added listener from the event target
- Parameters:
-
type
: -
{string}
- name of event
-
handler
: -
{!Function}
- previously added event handler
-
opt_capture
: -
{boolean=} [optional]
- if set to true will listen in the capture phase (bubble otherwise)
-
opt_scope
: -
{Object=} [optional]
- scope for the handler function
dispatchEvent (evt)
This method will dispatch event on the event target object
- Parameters:
-
evt
: -
{(H.util.Event | string)}
- event object or event name
dispose ()
Removes listeners from this object. Classes that extend EventTarget may need to override this method in order to remove references to DOM Elements and additional listeners.
addOnDisposeCallback (callback, opt_scope)
This method adds callback which is triggered when the object is being disposed
- Parameters:
-
callback
: -
{!Function}
-
opt_scope
: -
{Object=} [optional]
setDataPoints (dataPoints)
This method sets a new data on the provider class.
- Parameters:
-
dataPoints
: -
{Array<H.clustering.DataPoint>}
- A set of data points
addDataPoint (dataPoint)
This method adds a data point to the provider. Note that this method triggers reclustering of the the data set associated with the provider.
- Parameters:
-
dataPoint
: -
{H.clustering.DataPoint}
- An object representing the data point to add
addDataPoints (dataPoints)
This method adds a list of data points to the provider. Note that this method triggers reclustering of the data set associated with the provider.
- Parameters:
-
dataPoints
: -
{Array<H.clustering.DataPoint>}
- A set of data point objects to add
removeDataPoint (dataPoint)
This method removes a data point from the provider's data set. Note that this method triggers reclustering of the data set associated with the provider.
- Parameters:
-
dataPoint
: -
{H.clustering.DataPoint}
- An object representing the data point to remove
getTheme () : {H.clustering.ITheme}
This method retrieves the current theme used for cluster visualizations.
- Returns:
-
{H.clustering.ITheme}
- An object represening the clustering scheme
setTheme (theme)
This method sets new theme on the provider. Note that this method changes the visual representation of the displayed clusters and noise points.
- Parameters:
-
theme
: -
{H.clustering.ITheme}
- An object representing the theme to set
providesDomMarkers () : {boolean}
This method always returns true as we don't have information about visual representation until we have the clustering result and apply the theme.
- Returns:
-
{boolean}
requestDomMarkers (bounds, zoomLevel, visiblesOnly, cacheOnly) : {Array<H.map.DomMarker>}
Returns all DomMarker cluster and noise point representations which intersect with the provided rectangular area.
- Parameters:
-
bounds
: -
{H.geo.Rect}
- A rectangular area in geo space to intersect with
-
zoomLevel
: -
{number}
- The zoom level for which the objects are requested
-
visiblesOnly
: -
{boolean}
- Indicates whether only invisible objects are to be considered
-
cacheOnly
: -
{boolean}
- Indicates whether only cached objects are to be considered
- Returns:
-
{Array<H.map.DomMarker>}
- a list of intersecting objects
providesMarkers () : {boolean}
This method always returns true as we don't have information about visual representation until we have the clustering result and apply the theme.
- Returns:
-
{boolean}
requestMarkers (bounds, zoomLevel, visiblesOnly, cacheOnly) : {Array<H.map.Marker>}
Returns all cluster and noise point markers which intersect with the provided rectangular area.
- Parameters:
-
bounds
: -
{H.geo.Rect}
- A rectangular area in geo space to intersect with
-
zoomLevel
: -
{number}
- The zoom level for which the objects are requested
-
visiblesOnly
: -
{boolean}
- Indicates whether only invisible objects are to be considered
-
cacheOnly
: -
{boolean}
- Indicates whether only cached objects are to be considered
- Returns:
-
{Array<H.map.Marker>}
- a list of intersecting objects
providesSpatials () : {boolean}
This method always returns true as we don't have information about visual representation until we have the clustering result and apply the theme.
- Returns:
-
{boolean}
requestSpatials (bounds, zoomLevel, visiblesOnly, cacheOnly) : {Array<H.map.Spatial>}
Returns all polyline, polygon, circle and rect objects which represent cluster and noise points and intersect with the provided area.
- Parameters:
-
bounds
: -
{H.geo.Rect}
- A rectangular area in geo space to intersect with
-
zoomLevel
: -
{number}
- The zoom level for which the objects are requested
-
visiblesOnly
: -
{boolean}
- Indicates whether only invisible objects are to be considered
-
cacheOnly
: -
{boolean}
- Indicates whether only cached objects are to be considered
- Returns:
-
{Array<H.map.Spatial>}
- a list of intersecting objects
requestSpatialsByTile (tile, visiblesOnly, cacheOnly) : {Array<H.map.Spatial>}
Returns the spatial objects which intersect the given tile
- Parameters:
-
tile
: -
{H.map.provider.SpatialTile}
- The tile for which the objects are requested
-
visiblesOnly
: -
{boolean}
- Indicates whether only invisible objects are to be considered
-
cacheOnly
: -
{boolean}
- Indicates whether only cached objects are to be considered
- Returns:
-
{Array<H.map.Spatial>}
- a list of intersecting objects
getInvalidations () : {H.map.provider.Invalidations}
Returns the accumulate invalidations of this provider's objects that have occurred.
- Returns:
-
{H.map.provider.Invalidations}
- an invalidations object
invalidateObject (mapObject, changes)
To signal to this provider that a map object has been changed. The method updates the Invalidations of this provider and the given map object and triggers dispatchUpdate()
- Parameters:
-
mapObject
: -
{!H.map.Object}
- The map object to be invalidated
-
changes
: -
{H.math.BitMask}
- The flags indicating the types of occurred changes