# Gauge arc with targets (Radial Column example)

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

A 250° partial ring with slot tracks and three gauge arcs inside.

- Chart type: `radialColumn` (Radial Column)
- Collection: Radial Column · Radial Column · Series, gauge & live
- Raw configuration: https://westcoast-charts.com/gallery-src/radial-column/gauge.js
- Standalone example: https://westcoast-charts.com/embed/samples/wcc/premium/radial-column.html?only=gauge

## Setup

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

WestCoastCharts.use(premium)
const WestCoastChartsPremium = premium
WestCoastCharts.setLicenseKey(LICENCE_KEY) // paid production licence; localhost evaluation needs no key
```

## Options

```js
const options = {
  "chart": {
    "type": "radialColumn",
    "height": 440,
    "toolbar": {
      "show": false
    }
  },
  "series": [
    {
      "name": "Utilisation",
      "data": [
        60,
        68,
        72,
        74,
        78,
        75,
        71,
        67,
        61,
        50,
        44,
        43,
        37,
        41,
        43,
        51,
        56,
        68,
        71,
        78,
        75,
        78,
        71,
        65,
        55,
        50,
        41,
        33,
        33,
        33,
        40,
        52,
        57,
        66,
        75,
        78,
        82,
        81,
        72,
        66,
        56,
        45,
        37,
        38,
        37,
        39,
        44,
        50
      ]
    }
  ],
  "xaxis": {
    "categories": [
      "00:00",
      "00:30",
      "01:00",
      "01:30",
      "02:00",
      "02:30",
      "03:00",
      "03:30",
      "04:00",
      "04:30",
      "05:00",
      "05:30",
      "06:00",
      "06:30",
      "07:00",
      "07:30",
      "08:00",
      "08:30",
      "09:00",
      "09:30",
      "10:00",
      "10:30",
      "11:00",
      "11:30",
      "12:00",
      "12:30",
      "13:00",
      "13:30",
      "14:00",
      "14:30",
      "15:00",
      "15:30",
      "16:00",
      "16:30",
      "17:00",
      "17:30",
      "18:00",
      "18:30",
      "19:00",
      "19:30",
      "20:00",
      "20:30",
      "21:00",
      "21:30",
      "22:00",
      "22:30",
      "23:00",
      "23:30"
    ]
  },
  "plotOptions": {
    "radialColumn": {
      "aggregate": "mean",
      "startAngle": -125,
      "endAngle": 125,
      "track": {
        "show": true
      },
      "layers": [
        {
          "type": "arc",
          "name": "Targets",
          "max": 100,
          "data": [
            {
              "x": "CPU",
              "y": 72
            },
            {
              "x": "Memory",
              "y": 58
            },
            {
              "x": "Disk",
              "y": 34
            }
          ]
        }
      ]
    }
  }
}

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 radial-column-gauge.json --out radial-column-gauge.svg --with-table` (save the options above as JSON first)