Heatmap.

PRO

Encode values at two coordinates using color.

<sy-heatmap>Installation and integration API reference

LIVE EXAMPLE

Grid measurements

Match the page theme

Interact with the chart to see selection and range-change results here.

Place each cell using x and y coordinates and encode value as color. 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-heatmap.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-heatmap",
      "props": {
        "data": [
          {
            "x": 0,
            "y": 0,
            "value": 10
          },
          {
            "x": 1,
            "y": 0,
            "value": 27
          },
          {
            "x": 2,
            "y": 0,
            "value": 44
          },
          {
            "x": 3,
            "y": 0,
            "value": 61
          },
          {
            "x": 4,
            "y": 0,
            "value": 78
          },
          {
            "x": 5,
            "y": 0,
            "value": 95
          },
          {
            "x": 0,
            "y": 1,
            "value": 22
          },
          {
            "x": 1,
            "y": 1,
            "value": 39
          },
          {
            "x": 2,
            "y": 1,
            "value": 56
          },
          {
            "x": 3,
            "y": 1,
            "value": 73
          },
          {
            "x": 4,
            "y": 1,
            "value": 90
          },
          {
            "x": 5,
            "y": 1,
            "value": 17
          },
          {
            "x": 0,
            "y": 2,
            "value": 34
          },
          {
            "x": 1,
            "y": 2,
            "value": 51
          },
          {
            "x": 2,
            "y": 2,
            "value": 68
          },
          {
            "x": 3,
            "y": 2,
            "value": 85
          },
          {
            "x": 4,
            "y": 2,
            "value": 12
          },
          {
            "x": 5,
            "y": 2,
            "value": 29
          },
          {
            "x": 0,
            "y": 3,
            "value": 46
          },
          {
            "x": 1,
            "y": 3,
            "value": 63
          },
          {
            "x": 2,
            "y": 3,
            "value": 80
          },
          {
            "x": 3,
            "y": 3,
            "value": 97
          },
          {
            "x": 4,
            "y": 3,
            "value": 24
          },
          {
            "x": 5,
            "y": 3,
            "value": 41
          },
          {
            "x": 0,
            "y": 4,
            "value": 58
          },
          {
            "x": 1,
            "y": 4,
            "value": 75
          },
          {
            "x": 2,
            "y": 4,
            "value": 92
          },
          {
            "x": 3,
            "y": 4,
            "value": 19
          },
          {
            "x": 4,
            "y": 4,
            "value": 36
          },
          {
            "x": 5,
            "y": 4,
            "value": 53
          }
        ],
        "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', 'heatmap 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

Explore matrix patterns across time, products, sensor locations, and similar dimensions.

Color alone makes precise values difficult to read. Provide a legend, tooltips, and a table.

Data contract

Property	Input format
`data`	An array of { x, y, value }. x and y are numeric or categorical coordinates.

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