Error Bar.

PRO

Show uncertainty or a range around a central value.

<sy-error-bar-chart>Installation and integration API reference

LIVE EXAMPLE

Mean and range

Match the page theme

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

Show a central value together with lower and upper bounds. 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-error-bar-chart.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-error-bar-chart",
      "props": {
        "data": [
          {
            "category": "A",
            "value": 40,
            "low": 32,
            "high": 48
          },
          {
            "category": "B",
            "value": 55,
            "low": 50,
            "high": 63
          },
          {
            "category": "C",
            "value": 47,
            "low": 38,
            "high": 54
          }
        ],
        "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', 'error-bar 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

Represent means with confidence intervals, tolerances, or measurement ranges.

Error bars do not determine their own meaning. Explain whether they represent standard deviation, a confidence interval, or another range.

Data contract

Property	Input format
`data`	Use { category, value, low, high } or a symmetric error.

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