WebOffice Standard Reference > WebOffice Category > Layer Queries

Clustering is a way to symbolize point data in a generalized way without too much loss of information. Using Clustering you are able to display a symbolization of point features through all scale levels. Clustering is perfect to show a frequency distribution of point features. Gaining information about the features using the MapTip functionality is useful down to a much smaller scale level. On details on our recommended use cases see chapter How to Configure... Clustering for Point Data Display.

Clustering point feature display in WebOffice 10 R3 html client

Prerequisite for enabling Clustering functionality is an identifiable/selectable layer. See chapter Layer Queries for details.

Using MapTip you can gain information of up to ten point features pooled to one cluster. The single features get displayed using a 'mouse over effect' on the cluster. After the Cluster 'explosion' every single feature is identifiable by MapTip.

Note: MapTip scale ranges on the layer will be expanded by the Cluster scale range if necessary! Specifying a gap between Cluster and MapTip scale range is a misconfiguration and will be ignored.

Exploded Cluster and Map Tip of single feature in WebOffice 10 R3 html client

Clustering configuration - WebOffice Category

Property	Description
Display Clustering?	Specifies if the layer is displayed with point-clustering 'Yes' or not 'No'
Cluster tolerance	Cluster tolerance in pixel specifies if a point with a certain pixel distance will get part of a cluster or not. This way it is possible to control the count of cluster symbols displayed on the screen.
Clusterlimit for Activation	Limit to where a cluster can get activated and queried
Minimum scale	Minimum scale up to where features are clustered and drawn as one cluster object on the map. Default value 0 means no limitation.
Maximum scale	Maximum scale to where features are clustered and drawn as one cluster object on the map. Default value 0 means no limitation.

Clustering configuration

Notes:

- Clustering works for point layers only.

- We recommend to configure Clustering for one layer only.

- Clustering is not convenient for feature classes with more than 10,000 features.

- Clustering only works, if the fields OBJECTID and SHAPE are activated in the feature class.