# Semi circle (Radial bar example)

> WestCoast Charts 1.1.5, release, public Core release, on npm. HTML: https://westcoast-charts.com/gallery/radialbar/semi-circle-chart/ · Index for agents: https://westcoast-charts.com/llms.txt

Half ring.

- Chart type: `radialBar` (Radial Bar)
- Collection: Radial bar · Radial bar
- Raw configuration: https://westcoast-charts.com/gallery-src/radialbar/semi-circle-chart.js
- Standalone example: https://westcoast-charts.com/embed/samples/wcc/gallery/radialbar/semi-circle-chart.html

## Setup

```js
import WestCoastCharts from 'west-coast-charts'
```

## Options

```js
const options = {
  chart: {
    height: 300,
    fontFamily: "Inter, Geist, \"IBM Plex Sans\", system-ui, sans-serif",
    type: "radialBar",
    toolbar: {
      show: false
    }
  },
  series: [63],
  labels: ["Quota"],
  plotOptions: {
    radialBar: {
      startAngle: -90,
      endAngle: 90,
      track: {
        margin: 4
      },
      dataLabels: {
        name: {
          show: false
        },
        value: {
          offsetY: -4,
          fontSize: "26px"
        }
      }
    }
  },
  theme: {
    mode: "light",
    preset: "coastal"
  }
}

const chart = new WestCoastCharts(document.querySelector('#chart'), options)
await chart.render()
```

## Verify

- Text check (Library 1.1.5): load `west-coast-charts/agent/describe` and call `chart.describe({ format: "json" })` for the actual drawn state. The live reader is on this example’s HTML page.
- Command line (Public agent tools 0.2.3, tested with Library 1.1.5; available from the versioned GitHub release and npm, https://westcoast-charts.com/docs/cli/index.md): `wcc chart export radialbar-semi-circle-chart.json --out radialbar-semi-circle-chart.svg --with-table` (save the options above as JSON first)