# Gradient ring (Radial bar example)

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

Gradient fill along the ring.

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

## Setup

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

## Options

```js
const options = {
  chart: {
    height: 340,
    fontFamily: "Inter, Geist, \"IBM Plex Sans\", system-ui, sans-serif",
    type: "radialBar",
    toolbar: {
      show: false
    }
  },
  series: [74],
  labels: ["Battery"],
  fill: {
    type: "gradient",
    gradient: {
      shade: "dark",
      type: "horizontal",
      gradientToColors: ["#16a34a"],
      stops: [0, 100]
    }
  },
  colors: ["#f59e0b"],
  stroke: {
    lineCap: "round"
  },
  plotOptions: {
    radialBar: {
      hollow: {
        size: "64%"
      }
    }
  },
  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-circle-gradient.json --out radialbar-circle-gradient.svg --with-table` (save the options above as JSON first)