Extension:Graph/Demo/Pageviews

<graph>

{
  "version": 2,
  "width": 400,
  "height": 200,
  "data": [
    {
      "name": "pageviews",
      "url": "wikirest://wikimedia.org/api/rest_v1/metrics/pageviews/per-article/en.wikipedia/all-access/user/Main_Page/daily/2024102107/2024103107",
      "format": {
        "type": "json",
        "property": "items"
      },
      "transform": [
        {
          "type": "formula",
          "field": "year",
          "expr": "parseInt(substring(datum.timestamp,0,4))"
        },
        {
          "type": "formula",
          "field": "month",
          "expr": "parseInt(substring(datum.timestamp,4,6))"
        },
        {
          "type": "formula",
          "field": "day",
          "expr": "parseInt(substring(datum.timestamp,6,8))"
        },
        {
          "type": "formula",
          "field": "date",
          "expr": "datetime(datum.year,datum.month-1,datum.day)"
        }
      ]
    }
  ],
  "scales": [
    {
      "name": "x",
      "type": "time",
      "range": "width",
      "domain": {"data": "pageviews","field": "date"}
    },
    {
      "name": "y",
      "type": "linear",
      "range": "height",
      "nice": true,
      "domain": {"data": "pageviews","field": "views"}
    }
  ],
  "axes": [
    {"type": "x","scale": "x","ticks": 5},
    {"type": "y","scale": "y"}
  ],
  "marks": [
    {
      "type": "line",
      "from": {"data": "pageviews"},
      "properties": {
        "enter": {
          "x": {"scale": "x","field": "date"},
          "y": {"scale": "y","field": "views"},
          "stroke": {"value": "#00f"},
          "strokeWidth": {"value": 3}
        }
      }
    }
  ]
}

</graph>