Radar.
COMMUNITYCompare multiple metrics in a single outline.
LIVE EXAMPLE
Product capabilities
Appearance and style8
Legend and interaction13
Title and dimensions3
Compare two products on a shared 0–100 scale. All values are sample data.
View code
<div id="chart-container" style="width: 100%; min-width: 0;"></div>
<script type="module">
import { defineCustomElement as define0 } from '@syidax/advanced/components/sy-radar-chart.js';
define0();
const specs = [
{
"id": "example-chart",
"tag": "sy-radar-chart",
"props": {
"engine": "standard",
"categories": ["Performance", "Quality", "Price", "Support", "Scalability"],
"data": [
{
"name": "A",
"data": [90, 80, 65, 85, 70],
"color": "#8263d9"
},
{
"name": "B",
"data": [70, 90, 85, 60, 80],
"color": "#239c91"
}
],
"min": 0,
"max": 100,
"variant": "area",
"legend": true,
"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', 'radar example chart');
return element;
});
container.replaceChildren(...elements);
const chart = elements.at(-1);
const onEvent = event => {
console.log('pointClick', event.detail);
};
chart.addEventListener('pointClick', 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('pointClick', onEvent);
container.replaceChildren();
}
</script>Usage and data
#Compare product or team capabilities normalized to the same scale.
Axis order changes the shape's appearance. Do not directly compare raw values with different units.
Data contract
| Property | Input format |
|---|---|
data | Each series is { name, data, color? }. |
categories | Metric names in the same order as data. |
min | Together with max, defines the shared measurement range. |
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 22 interactive feature examples and inspect their code. Select “Edit in preview” to combine more options in the settings panel above.
Polygon grid
Compare values on a polygon grid connecting the metrics.
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Fill and outline
Show differences between two products using translucent areas and thick lines.
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Inspect values with the pointer
Point to data to view the value at that location.
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Crosshair tracking
Move the pointer to read horizontal and vertical coordinates alongside values.
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Replay animation
Redraw the same example to inspect its initial display animation.
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Animation
Compare 2 examples of Animation. Buttons and options update both the live result and source code.
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Area fill
Compare 3 examples of Area fill. Buttons and options update both the live result and source code.
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Metrics and items
Compare 1 examples of Metrics and items. Buttons and options update both the live result and source code.
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Crosshair
Compare 5 examples of Crosshair. Buttons and options update both the live result and source code.
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Point editing
Compare 1 examples of Point editing. Buttons and options update both the live result and source code.
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Legend
Compare 3 examples of Legend. Buttons and options update both the live result and source code.
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Multiple series
Compare 3 examples of Multiple series. Buttons and options update both the live result and source code.
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Appearance and style
Compare 2 examples of Appearance and style. Buttons and options update both the live result and source code.
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Tooltip
Compare 11 examples of Tooltip. Buttons and options update both the live result and source code.
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Context menu
Compare 1 examples of Context menu. Buttons and options update both the live result and source code.
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Data change events
Compare 1 examples of Data change events. Buttons and options update both the live result and source code.
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Data context menu
Compare 1 examples of Data context menu. Buttons and options update both the live result and source code.
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Pointer Events
Compare 1 examples of Pointer Events. Buttons and options update both the live result and source code.
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Read coordinates and data
Compare 1 examples of Read coordinates and data. Buttons and options update both the live result and source code.
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Runtime API
Compare 1 examples of Runtime API. Buttons and options update both the live result and source code.
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Overview
Compare 1 examples of Overview. Buttons and options update both the live result and source code.
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Streaming · Add and update live dataPRO
Compare 2 examples of Add and update live data. Buttons and options update both the live result and source code.
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Add to your interface
#The code tabs below the preview contain the full data, options, event bindings, and responsive sizing for the current example. Copy them into an app project, such as Vite, that can resolve the installed packages.
API reference
#The full public API for sy-radar-chart. Pass objects and arrays as JavaScript properties. Select a name to view usage code and type definitions.
Key properties
| Attribute / Property | Type / Default | Description |
|---|---|---|
RadarChartDataDefault: [] | Each series is { name, data, color? }. | |
string[]Default: [] | Metric names in the same order as data. | |
number | 'auto'Default: 'auto' | Together with max, defines the shared measurement range. | |
numberDefault: 360 | Chart width in pixels. Update with ResizeObserver when the container changes. | |
numberDefault: 360 | Chart height in pixels. | |
| brandLogo | stringDefault: undefined | The 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. |
RadarChartVariantDefault: 'line' | Allowed values: area, line. Default: 'line'. | |
| startAngle | numberDefault: 0 | Angle of category 0 in DEGREES (0 = 12 o'clock, clockwise +). |
| lineWidth | numberDefault: 2 | Set as an HTML attribute or JavaScript property. type: number. |
| fillOpacity | numberDefault: 0.25 | Area-variant fill alpha (0..1). |
| gridShape | RadarGridShapeDefault: 'polygon' | Allowed values: circle, polygon. Default: 'polygon'. |
| showMarkers | booleanDefault: true | Set as an HTML attribute or JavaScript property. type: boolean. |
| markerRadius | numberDefault: 3 | Set as an HTML attribute or JavaScript property. type: number. |
| showRingLabels | booleanDefault: true | Set as an HTML attribute or JavaScript property. type: boolean. |
| chartTitle | stringDefault: undefined | The title inside the chart. Explain the data's unit and meaning alongside it. |
| chartSubtitle | stringDefault: undefined | The subtitle inside the chart. |
| tooltipShow | booleanDefault: true | Whether to display the built-in tooltip. |
RadarChartTooltipInputDefault: undefined | Tooltip settings for pointer-driven values, position, and content. | |
CartesianCrosshairInputDefault: undefined | Crosshair guide — the SAME parameter names as the cartesian charts, read on the polar pane. Off by default. Accepts `true` / a partial spec `{ show, mode, snap, color, dash }`. `mode 'vertical'` → the category axis guide = a radial spoke; `mode 'horizontal'` → the value axis guide = a concentric ring; `mode 'cross'` → both. `snap 'nearest'` snaps to the nearest vertex, `'index'` to the nearest category, `'off'` is the raw pointer. Objects can't ride an attribute — set it as a property (or via a `<sy-chart>` script). | |
booleanDefault: false | Whether to show a legend for series or items. | |
| legendPosition | RadarChartLegendPositionDefault: 'bottom' | Where the legend is positioned. |
| animated | booleanDefault: false | Whether to animate initial display and data changes. |
| animationDuration | numberDefault: 450 | Animation duration in milliseconds. |
| animationEasing | RadarChartEasingDefault: 'ease-out' | Allowed values: linear, ease-out, ease-in, ease-in-out. Default: 'ease-out'. |
| animationType | RadarChartAnimationTypeDefault: undefined | Allowed values: initial, update. Default: undefined. |
Other properties 25
| Attribute / Property | Type / Default | Description |
|---|---|---|
number | 'auto'Default: 'auto' | Allowed values: auto. Default: 'auto'. | |
| tickInterval | number | 'auto'Default: 'auto' | Allowed values: auto. Default: 'auto'. |
number | stringDefault: undefined | Pass as a JavaScript property. type: number | string. | |
| centerX | number | stringDefault: undefined | Pass as a JavaScript property. type: number | string. |
| centerY | number | stringDefault: undefined | Pass as a JavaScript property. type: number | string. |
stringDefault: '#2563eb' | Set as an HTML attribute or JavaScript property. type: string. | |
ReadonlyArray<string>Default: undefined | Multi-series palette. Per-series `color` always wins. | |
| gridColor | stringDefault: '#e5e7eb' | Set as an HTML attribute or JavaScript property. type: string. |
| ringLabelColor | stringDefault: '#9ca3af' | Set as an HTML attribute or JavaScript property. type: string. |
| ringLabelFontSize | numberDefault: 10 | Set as an HTML attribute or JavaScript property. type: number. |
| ringLabelFormat | stringDefault: undefined | Set as an HTML attribute or JavaScript property. type: string. |
| categoryLabelColor | stringDefault: '#374151' | Set as an HTML attribute or JavaScript property. type: string. |
| categoryLabelFontSize | numberDefault: 12 | Set as an HTML attribute or JavaScript property. type: number. |
| tooltipFormat | (detail: RadarChartPointerEventDetail) => stringDefault: undefined | Pass as a JavaScript property. type: (detail: RadarChartPointerEventDetail) => string. |
| enableMouseTracking | booleanDefault: true | Set as an HTML attribute or JavaScript property. type: boolean. |
| legendItems | LegendItem[]Default: undefined | Pass as a JavaScript property. type: LegendItem[]. |
| activeSeriesIndex | numberDefault: undefined | Set as an HTML attribute or JavaScript property. type: number. |
| seriesActiveTrigger | RadarChartSeriesActiveTriggerDefault: 'click' | Allowed values: hover, click, custom. Default: 'click'. |
booleanDefault: false | Enables direct pointer editing of point values. | |
| streamSource | RadarChartStreamSourceDefault: undefined | A stream source for live data. Check the contract for the specific type. |
| streamWindow | numberDefault: undefined | The streaming data range to keep visible. |
| streamMax | numberDefault: undefined | The maximum number of streaming data points to retain. |
RadarChartEngineModeDefault: 'auto' | Renderer selection: auto, standard, or pro. Engine selection is separate from permission to use a Pro chart type. | |
| proThreshold | numberDefault: 50_000 | Set as an HTML attribute or JavaScript property. type: number. |
RadarChartUnavailableBehaviourDefault: 'fallback' | Allowed values: fallback, error, throw. Default: 'fallback'. |
Events 16
| Events | Detail type | Description |
|---|---|---|
RadarChartRenderResult & { tier: RadarChartEngineTier } | Emits rendering results in detail when chart drawing completes. | |
RadarChartPointerEventDetail | A point selection event. Read the selected data and index from CustomEvent.detail. | |
RadarChartPointerEventDetail | null | CustomEvent.detail type: RadarChartPointerEventDetail | null. Event names are case-sensitive. | |
CartesianCrosshairEventDetail | null | CustomEvent.detail type: CartesianCrosshairEventDetail | null. Event names are case-sensitive. | |
ChartPointContextMenuEventDetail<RadarChartPointerEventDetail> | CustomEvent.detail type: ChartPointContextMenuEventDetail<RadarChartPointerEventDetail>. Event names are case-sensitive. | |
RadarChartPointerEventDetail | CustomEvent.detail type: RadarChartPointerEventDetail. Event names are case-sensitive. | |
{ index: number; seriesId: string; label: string; disabled: boolean } | CustomEvent.detail type: { index: number; seriesId: string; label: string; disabled: boolean }. Event names are case-sensitive. | |
{ index: number; seriesId: string; disabled: boolean } | CustomEvent.detail type: { index: number; seriesId: string; disabled: boolean }. Event names are case-sensitive. | |
{ count: number } | CustomEvent.detail type: { count: number }. Event names are case-sensitive. | |
{ dropped: number } | CustomEvent.detail type: { dropped: number }. Event names are case-sensitive. | |
void | CustomEvent.detail type: void. Event names are case-sensitive. | |
void | CustomEvent.detail type: void. Event names are case-sensitive. | |
void | CustomEvent.detail type: void. Event names are case-sensitive. | |
RadarChartTooltipShowEventDetail | Whether to display the built-in tooltip. | |
void | CustomEvent.detail type: void. Event names are case-sensitive. | |
RadarChartTooltipActionEventDetail | CustomEvent.detail type: RadarChartTooltipActionEventDetail. Event names are case-sensitive. |
Methods 20
Stencil methods return Promises. Use await within an async function to read the result.
| Method / Arguments | Return type | Description |
|---|---|---|
Promise<RadarChartRenderResult> | An asynchronous method. Check the argument and return types below. | |
Promise<RadarChartEngineTier> | An asynchronous method. Check the argument and return types below. | |
| data: RadarChartData | Promise<void> | An asynchronous method. Check the argument and return types below. |
| series: RadarChartData[number], opts?: { insertAt?: number } | Promise<number> | An asynchronous method. Check the argument and return types below. |
| idOrIndex: string | number | Promise<boolean> | An asynchronous method. Check the argument and return types below. |
| idOrIndex: string | number, patch: Partial<RadarChartData[number]> | Promise<boolean> | An asynchronous method. Check the argument and return types below. |
| seriesIdOrIndex: string | number, categoryIdOrIndex: string | number, value: number | null | Promise<boolean> | An asynchronous method. Check the argument and return types below. |
| frame: RadarStreamFrame | Promise<void> | Append a streaming FRAME (one value per category). Without a stream source, replaces series 0's data. |
| frames: ReadonlyArray<RadarStreamFrame> | Promise<void> | An asynchronous method. Check the argument and return types below. |
| count?: number | Promise<void> | An asynchronous method. Check the argument and return types below. |
| frames: ReadonlyArray<RadarStreamFrame> | Promise<void> | An asynchronous method. Check the argument and return types below. |
Promise<RadarChartStreamSource | undefined> | An asynchronous method. Check the argument and return types below. | |
| options: { duration?: number; easing?: RadarChartEasing; enabled?: boolean; type?: RadarChartAnimationType } | 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. | |
Promise<void> | An asynchronous method. Check the argument and return types below. | |
| cssX: number, cssY: number | Promise<RadarChartPointerEventDetail | null> | An asynchronous method. Check the argument and return types below. |
| seriesIndex: number, categoryIndex: number | Promise<RadarChartPointerEventDetail | null> | An asynchronous method. Check the argument and return types below. |
Promise<void> | An asynchronous method. Check the argument and return types below. | |
Promise<ChartEngineStatus> | Requested engine vs what runs, and why (CHART-ADD-08): always Standard (this type has no WebGPU renderer); read without side effects, never consults the license. |
No matching APIs.