# Independent: channel mix + hourly load (Radial Column example)

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

Unrelated axes: the donut is the channel mix, the ring is load by hour. With the filter interaction, clicking a channel shows that channel's own hourly load on the ring; click again or press Esc for all channels.

- Chart type: `radialColumn` (Radial Column)
- Collection: Radial Column · Radial Column · Linked layers
- Raw configuration: https://westcoast-charts.com/gallery-src/radial-column/multi-channel.js
- Standalone example: https://westcoast-charts.com/embed/samples/wcc/premium/radial-column.html?only=multi-channel

## 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": 500,
    "toolbar": {
      "show": false
    }
  },
  "series": [
    {
      "name": "Requests",
      "data": [
        68,
        72,
        80,
        91,
        94,
        89,
        79,
        70,
        68,
        71,
        80,
        90,
        91,
        88,
        80,
        74,
        70,
        77,
        102,
        116,
        121,
        112,
        100,
        82
      ]
    }
  ],
  "xaxis": {
    "categories": [
      "00:00",
      "01:00",
      "02:00",
      "03:00",
      "04:00",
      "05:00",
      "06:00",
      "07:00",
      "08:00",
      "09:00",
      "10:00",
      "11:00",
      "12:00",
      "13:00",
      "14:00",
      "15:00",
      "16:00",
      "17:00",
      "18:00",
      "19:00",
      "20:00",
      "21:00",
      "22:00",
      "23:00"
    ]
  },
  "plotOptions": {
    "radialColumn": {
      "innerRadius": 0.58,
      "center": {
        "label": "Requests"
      },
      "link": {
        "mode": "none",
        "interaction": "filter"
      },
      "layers": [
        {
          "type": "donut",
          "name": "Channel",
          "data": [
            {
              "x": "Web",
              "y": 719,
              "values": [
                26,
                30,
                34,
                37,
                35,
                33,
                30,
                26,
                24,
                26,
                32,
                35,
                33,
                29,
                25,
                24,
                23,
                28,
                32,
                37,
                36,
                31,
                29,
                24
              ]
            },
            {
              "x": "Mobile",
              "y": 720,
              "values": [
                19,
                19,
                23,
                30,
                33,
                28,
                21,
                18,
                18,
                20,
                24,
                30,
                31,
                31,
                27,
                23,
                20,
                23,
                46,
                53,
                58,
                53,
                42,
                30
              ]
            },
            {
              "x": "API",
              "y": 438,
              "values": [
                17,
                16,
                15,
                15,
                16,
                19,
                20,
                20,
                20,
                18,
                16,
                16,
                18,
                19,
                20,
                21,
                21,
                19,
                17,
                17,
                17,
                19,
                21,
                21
              ]
            },
            {
              "x": "Partner",
              "y": 188,
              "values": [
                6,
                7,
                8,
                9,
                10,
                9,
                8,
                6,
                6,
                7,
                8,
                9,
                9,
                9,
                8,
                6,
                6,
                7,
                7,
                9,
                10,
                9,
                8,
                7
              ]
            }
          ]
        }
      ]
    }
  }
}

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