Cluster control

When do you use it?

Add a control to activate clustering for a given field or set of selectors via a list of labels, buttons or a dropdown menu.

Basic Editor

To create a cluster control, follow these steps:

  1. In the menu that opens up, click on the first dropdown and change the value to "Cluster elements".

  2. Use the other dropdowns to customize the look and location of your controls.

  3. Click Save at the bottom to save your changes.

  4. To add multiple controls, repeat steps 1-4 for each control.

Advanced Editor

Cluster by field:

@controls {
  bottom {
    cluster {
      by: "Project";

Cluster using custom selectors:

@controls {
  top {
    cluster {
      as: buttons;

      option {
        value: person by "Project";
        label: "Project";

      option {
        value: person by "Country";
        label: "Country";

      option {
        value: person by "Organization";
        label: "Organization";

Supported properties

  • by is the field you'd like to use for clustering wrapped in double quotes. If you don't include by: field you need to list out each option - see "supported children" guidance below.

  • as controls how the control is presented. Do you want a list of labels, buttons, or a dropdown for activating clustering?

    • labels show options as a list of clickable labels

    • buttons show options as a group of buttons

    • dropdown show options as dropdown

  • multiple controls whether more than one value can be selected at a time

    • true allow multiple values to be selected

    • false only allow one value to be selected at a time

  • placeholder the text to display when nothing is selected (for as: dropdown only)

  • summary override the summary that's shown for the current selection (for as: dropdown). The summary will be shown regardless of what's selected so there's no need to use placeholder in this case.

  • default defines which field values should be selected by default (for by: "field" only). Use select-all to select everything by default.

Check out our controls reference to see the full list of properties and values recognized by the cluster control.

Supported children

If you want to use custom selectors to build clustering options, you'll need to list each option out separately. The options are defined by option blocks nested within the control and each option supports the following properties:

  • label the text to display for that option

  • value advanced cluster rule to cluster by

  • default

    • true value is selected by default

    • false value is unselected by default

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