Dendrogram.

PRO

Show parent-child connections as a tree.

Live preview27 feature examples

LIVE EXAMPLE

Organization structure

Match the page theme
Interact with the chart to see selection and range-change results here.
OptionsChanges are reflected in the preview and code.
Appearance and style7
Legend and interaction11
Title and dimensions3

Show parent-child connections as a tree. All values are sample data.

View code
Current preview
<div id="chart-container" style="width: 100%; min-width: 0;"></div>

<script type="module">
  import { defineCustomElement as define0 } from '@syidax/advanced-pro/components/sy-dendrogram.js';
  define0();

  // Pro: complete registerLicense at app startup using your issued certificate.
  // The website preview certificate is not for use in customer apps.
  const specs = [
    {
      "id": "example-chart",
      "tag": "sy-dendrogram",
      "props": {
        "data": [
          {
            "id": "all",
            "label": "All",
            "children": [
              {
                "id": "platform",
                "label": "Platform",
                "color": "#8263d9",
                "children": [
                  {
                    "id": "web",
                    "label": "Web",
                    "value": 42
                  },
                  {
                    "id": "mobile",
                    "label": "Mobile",
                    "value": 28
                  }
                ]
              },
              {
                "id": "service",
                "label": "Services",
                "color": "#239c91",
                "children": [
                  {
                    "id": "consult",
                    "label": "Consulting",
                    "value": 18
                  },
                  {
                    "id": "support",
                    "label": "Support",
                    "value": 12
                  }
                ]
              }
            ]
          }
        ],
        "direction": "left-right",
        "width": 640,
        "height": 360,
        "brandPosition": "bottom-right",
        "brandLogo": ""
      }
    }
  ];
  const container = document.querySelector('#chart-container');
  const elements = specs.map(({ tag, id, props }) => {
    const element = document.createElement(tag);
    element.id = id;
    Object.assign(element, props);
    element.setAttribute('aria-label', 'dendrogram example chart');
    return element;
  });
  container.replaceChildren(...elements);
  const chart = elements.at(-1);
  const onEvent = event => {
    console.log('nodeClick', event.detail);
  };
  chart.addEventListener('nodeClick', onEvent);
  const observer = new ResizeObserver(([entry]) => {
    const width = Math.max(160, Math.floor(entry.contentRect.width));
    elements.forEach(element => { element.width = width; });
  });
  observer.observe(container);

  // In an SPA, call this function when the view is disposed.
  function disposeChart() {
    observer.disconnect();
    chart.removeEventListener('nodeClick', onEvent);
    container.replaceChildren();
  }
</script>

Usage and data

#

Explore organizational, classification, or cluster structures.

Do not assume connection lengths represent statistical distances. This example displays hierarchy structure.

Data contract

PropertyInput format
dataAn array of { id, label?, children? } or nodes linked by parent.
directionThe tree's growth direction.

Updating data

Assign a new array or object to the property instead of mutating values inside an array. Chart events provide selection results through event.detail. When disposing of the view, clean up ResizeObserver and event listeners registered by your app.

Feature examples

#

Try 27 interactive feature examples and inspect their code. Select “Edit in preview” to combine more options in the settings panel above.

Vertical treePRO

Expand the classification structure from top to bottom.

Interact with the chart to see results here.
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Nodes and connectorsPRO

Emphasize structure with node sizes and connector widths.

Interact with the chart to see results here.
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Inspect values with the pointerPRO

Point to data to view the value at that location.

Interact with the chart to see results here.
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Drag to zoom and panPRO

Drag to zoom and hold Shift to pan. Use Ctrl + wheel to zoom in or out.

Interact with the chart to see results here.
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Replay animationPRO

Redraw the same example to inspect its initial display animation.

Interact with the chart to see results here.
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AnimationPRO

Compare 2 examples of Animation. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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ColorPRO

Compare 3 examples of Color. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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Data inputPRO

Compare 3 examples of Data input. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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DrilldownPRO

Compare 4 examples of Drilldown. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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LabelPRO

Compare 6 examples of Label. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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LayoutPRO

Compare 11 examples of Layout. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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LinksPRO

Compare 5 examples of Links. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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Large datasetsPRO

Compare 2 examples of Large datasets. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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SizePRO

Compare 1 examples of Size. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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TooltipPRO

Compare 12 examples of Tooltip. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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Zoom and panPRO

Compare 7 examples of Zoom and pan. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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Context menuPRO

Compare 1 examples of Context menu. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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Drill ChangePRO

Compare 1 examples of Drill Change. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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HoverPRO

Compare 2 examples of Hover. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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Link ClickPRO

Compare 3 examples of Link Click. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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Node ClickPRO

Compare 1 examples of Node Click. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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Data context menuPRO

Compare 1 examples of Data context menu. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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ExportPRO

Compare 1 examples of Export. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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Read coordinates and dataPRO

Compare 2 examples of Read coordinates and data. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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OptionalPRO

Compare 2 examples of Optional. Buttons and options update both the live result and source code.

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OverviewPRO

Compare 2 examples of Overview. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
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Streaming · Add and update live dataPRO

Compare 5 examples of Add and update live data. Buttons and options update both the live result and source code.

Interact with the chart to see results here.
View code

API reference

#

The full public API for sy-dendrogram. Pass objects and arrays as JavaScript properties. Select a name to view usage code and type definitions.

Key properties

Attribute / PropertyType / DefaultDescription
DendrogramDataDefault: undefinedAn array of { id, label?, children? } or nodes linked by parent.
numberDefault: 900Chart width in pixels. Update with ResizeObserver when the container changes.
numberDefault: 400Chart height in pixels.
brandLogostringDefault: undefinedThe default is the Syidax logo. With the Pro chart.branding entitlement, use none or a PNG, JPEG, or WebP data URL.
brandPosition'top-left' | 'top-right' | 'bottom-left' | 'bottom-right'Default: 'bottom-right'The corner where the logo is anchored. Applies equally to Community and Pro, on screen and in image exports.
numberDefault: 16Outer layout padding in CSS pixels; leaf slots are equally spaced.
nodeRadiusnumberDefault: 5Set as an HTML attribute or JavaScript property. type: number.
linkWidthnumberDefault: 1.5Set as an HTML attribute or JavaScript property. type: number.
linkOpacitynumberDefault: .65Set as an HTML attribute or JavaScript property. type: number.
DendrogramDirectionDefault: 'left-right'The tree's growth direction.
nodeLabelsDendrogramLabelModeDefault: 'auto'Allowed values: auto, show, hide. Default: 'auto'.
nodeLabelValuebooleanDefault: falseSet as an HTML attribute or JavaScript property. type: boolean.
chartTitlestringDefault: undefinedThe title inside the chart. Explain the data's unit and meaning alongside it.
chartSubtitlestringDefault: undefinedThe subtitle inside the chart.
CartesianTooltipInputDefault: undefinedTooltip settings for pointer-driven values, position, and content.
tooltipEnabledbooleanDefault: trueSet as an HTML attribute or JavaScript property. type: boolean.
animatedbooleanDefault: falseWhether to animate initial display and data changes.
animationDurationnumberDefault: 600Animation duration in milliseconds.
animationEasingDendrogramEasingDefault: 'ease-out'Allowed values: linear, ease-out, ease-in, ease-in-out. Default: 'ease-out'.
animationTypeDendrogramAnimationTypeDefault: undefinedAllowed values: initial, update. Default: undefined.
CartesianZoomInputDefault: undefinedSettings for zooming and the visible range.
Other properties 10
Attribute / PropertyType / DefaultDescription
booleanDefault: falseEnable branch navigation, breadcrumb controls and Alt+Enter / Backspace shortcuts.
stringDefault: 'auto'Set as an HTML attribute or JavaScript property. type: string.
activeColorstringDefault: '#f59e0b'Set as an HTML attribute or JavaScript property. type: string.
enableMouseTrackingbooleanDefault: trueSet as an HTML attribute or JavaScript property. type: boolean.
tooltipFormat(detail: DendrogramHitDetail) => stringDefault: undefinedPass as a JavaScript property. type: (detail: DendrogramHitDetail) => string.
streamSourceDendrogramStreamSourceDefault: undefinedA stream source for live data. Check the contract for the specific type.
streamMaxnumberDefault: undefinedThe maximum number of streaming data points to retain.
streamWindownumberDefault: undefinedThe streaming data range to keep visible.
DendrogramEngineModeDefault: 'auto'Renderer selection: auto, standard, or pro. Engine selection is separate from permission to use a Pro chart type.
DendrogramUnavailableBehaviourDefault: 'fallback'Allowed values: fallback, error. Default: 'fallback'.
Events 17
EventsDetail typeDescription
DendrogramRenderResult & { tier: DendrogramEngineTier }Emits rendering results in detail when chart drawing completes.
DendrogramHitDetailCustomEvent.detail type: DendrogramHitDetail. Event names are case-sensitive.
DendrogramHitDetail | nullCustomEvent.detail type: DendrogramHitDetail | null. Event names are case-sensitive.
DendrogramHitDetailCustomEvent.detail type: DendrogramHitDetail. Event names are case-sensitive.
DendrogramHitDetail | nullCustomEvent.detail type: DendrogramHitDetail | null. Event names are case-sensitive.
DendrogramSelectionChangeEventDetailCustomEvent.detail type: DendrogramSelectionChangeEventDetail. Event names are case-sensitive.
ChartPointContextMenuEventDetail<DendrogramHitDetail>CustomEvent.detail type: ChartPointContextMenuEventDetail<DendrogramHitDetail>. Event names are case-sensitive.
{ count: number; replaced: number }CustomEvent.detail type: { count: number; replaced: number }. Event names are case-sensitive.
{ dropped: number }CustomEvent.detail type: { dropped: number }. Event names are case-sensitive.
CartesianTooltipEventDetailWhether to display the built-in tooltip.
voidCustomEvent.detail type: void. Event names are case-sensitive.
CartesianTooltipActionEventDetailCustomEvent.detail type: CartesianTooltipActionEventDetail. Event names are case-sensitive.
voidCustomEvent.detail type: void. Event names are case-sensitive.
voidCustomEvent.detail type: void. Event names are case-sensitive.
voidCustomEvent.detail type: void. Event names are case-sensitive.
CartesianZoomChangeEventDetailCustomEvent.detail type: CartesianZoomChangeEventDetail. Event names are case-sensitive.
DendrogramDrillChangeEventDetailCustomEvent.detail type: DendrogramDrillChangeEventDetail. Event names are case-sensitive.
Methods 42

Stencil methods return Promises. Use await within an async function to read the result.

Method / ArgumentsReturn typeDescription
Promise<DendrogramRenderResult>An asynchronous method. Check the argument and return types below.
Promise<DendrogramEngineTier>An asynchronous method. Check the argument and return types below.
Promise<string | undefined>An asynchronous method. Check the argument and return types below.
data: DendrogramDataPromise<void>An asynchronous method. Check the argument and return types below.
Promise<DendrogramNode[]>An asynchronous method. Check the argument and return types below.
Promise<DendrogramLink[]>An asynchronous method. Check the argument and return types below.
index: numberPromise<DendrogramNode | null>An asynchronous method. Check the argument and return types below.
id: stringPromise<DendrogramNode | null>An asynchronous method. Check the argument and return types below.
Promise<number>An asynchronous method. Check the argument and return types below.
Promise<DendrogramExtent>An asynchronous method. Check the argument and return types below.
Promise<DendrogramLayoutResult>The layout as shown (the frozen view while frozen); without a valid license it is refused and nothing is computed.
node: DendrogramNodeInputPromise<void>An asynchronous method. Check the argument and return types below.
nodes: ReadonlyArray<DendrogramNodeInput>Promise<void>An asynchronous method. Check the argument and return types below.
count: numberPromise<void>An asynchronous method. Check the argument and return types below.
nodes: ReadonlyArray<DendrogramNodeInput>Promise<void>An asynchronous method. Check the argument and return types below.
Promise<ChartEngineStatus>Requested vs effective engine and why (CHART-ADD-08), with the chart.type.dendrogram license state.
Promise<DendrogramStreamSource | undefined>An asynchronous method. Check the argument and return types below.
Promise<void>An asynchronous method. Check the argument and return types below.
Promise<void>An asynchronous method. Check the argument and return types below.
Promise<void>An asynchronous method. Check the argument and return types below.
options: { enabled?: boolean; duration?: number; easing?: DendrogramEasing; type?: DendrogramAnimationType }Promise<void>An asynchronous method. Check the argument and return types below.
cssX: number, cssY: numberPromise<DendrogramHitDetail | null>An asynchronous method. Check the argument and return types below.
index: numberPromise<DendrogramHitDetail | null>An asynchronous method. Check the argument and return types below.
index: numberPromise<DendrogramHitDetail|null>An asynchronous method. Check the argument and return types below.
Promise<void>An asynchronous method. Check the argument and return types below.
Promise<DendrogramSelection>An asynchronous method. Check the argument and return types below.
rootId: string | nullPromise<DendrogramDrillChangeEventDetail | null>Enter a structural branch by stable ID; null returns to the complete forest. Requires drilldown.
nodeIndex: numberPromise<DendrogramDrillChangeEventDetail | null>Enter a structural branch by its normalized data index. Requires drilldown.
Promise<DendrogramDrillChangeEventDetail | null>Return to the current branch's parent, then the forest.
Promise<DendrogramNode | null>An asynchronous method. Check the argument and return types below.
index: numberPromise<CartesianTooltipEventDetail|null>An asynchronous method. Check the argument and return types below.
index: numberPromise<CartesianTooltipEventDetail|null>An asynchronous method. Check the argument and return types below.
index: numberPromise<CartesianTooltipEventDetail|null>An asynchronous method. Check the argument and return types below.
Promise<void>An asynchronous method. Check the argument and return types below.
request: CartesianZoomRequestPromise<CartesianZoomChangeEventDetail | null>Zoom to explicit windows over the unit extents: `x` / `y` as `{ min, max }` or `[min, max]` (`null` clears that orientation).
factor: number, anchorFraction?: numberPromise<CartesianZoomChangeEventDetail | null>Scale the current windows by `factor` (< 1 zooms in) around `anchorFraction` (0..1, default centre).
delta: { x?: number; y?: number }Promise<CartesianZoomChangeEventDetail | null>Slide the zoomed windows by unit-extent units (`{ x?, y? }`); a no-op at the full extent.
Promise<CartesianZoomChangeEventDetail | null>Back to the full diagram.
Promise<CartesianZoomState | null>The current zoom state (`null` = the full diagram).
request?: CartesianZoomExtentRequestPromise<CartesianZoomExtentDetail | null>The full extent (0 … 1) and key of the diagram's orientations (`null` before the first layout).
Promise<ChartDataTable>An asynchronous method. Check the argument and return types below.
Promise<DendrogramLabel[]>The labels as shown (the frozen view while frozen); without a valid license they are refused and nothing is computed.