Template:Graph:Pie2

Template documentation

Pie chart

You can add a pie chart with a call to this template.

Examples

Example usage:

{{Graph:Pie2 \| table = Wikimedia/all sites by browser family and major percent.tab \| field1 = browserFamily \| field2 = browserMajorVer \| value = percent \| width = 300 }}
See or edit source data.

Template Data

This template adds a pie chart to the page using Graph extension

Template parameters[Edit template data]
This template prefers inline formatting of parameters.
Parameter		Description	Type	Status
table	`table`	Data page name on Commons, without the Data: prefix. The table should contain at least three columns - major group, minor group, and numeric value Example Wikimedia/all sites by browser family and major percent.tab	Unknown	required
field1	`field1`	Id of the column shown as the inner circle Example browserFamily	Unknown	required
field2	`field2`	Id of the column shown as the outer circle Example browserMajorVer	Unknown	required
value	`value`	Id of the column with the numeric value Example percent	Unknown	required
width	`width`	Specify the width of the pie in number of pixels Default 300	Number	suggested
The colors of the slices	`colors`	The colors of the slices, specified as Vega defined rangeliteral. This can also be a list like [ "red", "green" ] Default "category10" Example "category10"	String	optional
innerportion	`innerportion`	Portion of the radius shown for the inner circle. Must be between 0 and 0.5 Default 0.35 Example 0.25	Number	optional
debug	`debug`	no description	Unknown	optional

<graph>

{
  //
  // ATTENTION: This code is maintained at https://www.mediawiki.org/wiki/Template:Graph:Pie2
  //            Please do not modify it anywhere else, as it may get copied and override your changes.
  //            Suggestions can be made at https://www.mediawiki.org/wiki/Template_talk:Graph:Pie2
  //
  // Template translation is in https://commons.wikimedia.org/wiki/Data:Original/Template:Graphs.tab
  //

  "version": 2,
  "width": 300, "height": 300, "padding": "strict",
  "data": [
    {
      "name": "table",
      "url": "tabular:///Wikimedia/all sites by browser family and major percent.tab",
      "format": {"property": "data"}
    },
    {
      "name": "ring1",
      "source": "table",
      "transform": [
        {"type": "aggregate", "groupby": ["browserFamily"], "summarize": {"percent": "sum"} },
        {"type": "sort", "by": ["-sum_percent"]},
        {"type": "pie","field": "sum_percent"}
      ]
    },
    {
      "name": "ring2",
      "source": "table",
      "format": {"property": "data"},
      "transform": [
        {"type": "lookup", "on": "ring1", "onKey": "browserFamily", "keys": ["browserFamily"], "as": "r1"},
        {"type": "sort", "by": ["-r1.sum_percent", "-percent"]},
        {"type": "pie","field": "percent"},
      ]
    },
  ],
  "scales": [
    {
      "name": "color",
      "type": "ordinal",
      "range": "category10",
      "domain": {"data": "ring2", "field": "browserFamily"}
    }
  ],
  "marks": [
    {
      "name": "inner_ring",
      "type": "arc",
      "from": {
        "data": "ring1"
      },
      "properties": {
        "enter": {
          "fill": {"scale": "color","field": "browserFamily"},
          "fillOpacity": {"value": 0.8},
          "stroke": {"value": "white"},
          "startAngle": {"field": "layout_start"},
          "endAngle": {"field": "layout_end"},
          "x": {"signal": "width", "mult": 0.5},
          "y": {"signal": "width", "mult": 0.5},
          "innerRadius": {"value": 0},
          "outerRadius": {"signal": "width", "mult": 0.35}
        }
      }
    },
    {
      "name": "outer_ring",
      "type": "arc",
      "from": {
        "data": "ring2",
        "transform": [
          {
            "type": "formula",
            "field": "opacity",
            "expr": "min(max(datum.percent / datum.r1.sum_percent, 0.2), 1)"
          }
        ]
      },
      "properties": {
        "enter": {
          "fill": {"scale": "color","field": "browserFamily"},
          "fillOpacity": {"field": "opacity"},
          "stroke": {"value": "white"},
          "strokeWidth": {"value": 0.4},
          "startAngle": {"field": "layout_start"},
          "endAngle": {"field": "layout_end"},
          "x": {"signal": "width", "mult": 0.5},
          "y": {"signal": "width", "mult": 0.5},
          "innerRadius": {"signal": "width", "mult": 0.35},
          "outerRadius": {"signal": "width", "mult": 0.5},
        }
      }
    },
    {
      // This mark draws labels around the pie chart after the pie chart has been drawn
      "type": "text",
      // Before drawing, we need to perform a number of calculations to figure out the exact location and orientation of the text
      "from": {
        "data": "ring1",
        "transform": [
          // For each data point (datum), each of these transformations will be ran in order.
          // Size of the pie slice, in degrees:  sliceSize = (end - start) * 180 / Pi
          { "type": "formula", "field": "sliceSize", "expr": "(datum.layout_end - datum.layout_start)*180/PI" },
          // Draw text only if the slice of the arc is big enough to avoid overcrowding
          { "type": "filter", "test": "datum.sliceSize > 7.5" },
          // Determine the side of the pie chart we are on - left or right.
          { "type": "formula", "field": "invert", "expr": "datum.layout_mid*180/PI < 180 ? 1 : -1" },
          // If on the left, the text should be right-aligned (go from the rim inward)
          { "type": "formula", "field": "align", "expr": "datum.invert < 0 ? 'left' : 'right'" },
          // At what angle should the text be drawn relative to the point on the circle
          { "type": "formula", "field": "angle", "expr": "(datum.layout_mid*180/PI)-90*datum.invert" },
        ]
      },
      "properties": {
        "enter": {
          "x": {"signal": "width", "mult": 0.5},
          "y": {"signal": "width", "mult": 0.5},
          "align": {"field": "align"},
          "angle": {"field": "angle"},
          "baseline": {"value": "middle"},
          "fill": {"value": "black"},
          "radius": {"signal": "width", "mult": 0.35, "offset": -7},
          "text": {"field": "browserFamily"},
          "theta": {"field": "layout_mid"}
        }
      }
    },
    {
      "type": "text",
      "from": {
        "data": "ring2",
        "transform": [
          { "type": "formula", "field": "sliceSize", "expr": "(datum.layout_end - datum.layout_start)*180/PI" },
          { "type": "filter", "test": "datum.sliceSize > 5" },
          { "type": "formula", "field": "invert", "expr": "datum.layout_mid*180/PI < 180 ? 1 : -1" },
          { "type": "formula", "field": "align", "expr": "datum.invert > 0 ? 'left' : 'right'" },
          { "type": "formula", "field": "angle", "expr": "(datum.layout_mid*180/PI)-90*datum.invert" },
        ]
      },
      "properties": {
        "enter": {
          "x": {"signal": "width", "mult": 0.5},
          "y": {"signal": "width", "mult": 0.5},
          "align": {"field": "align"},
          "angle": {"field": "angle"},
          "baseline": {"value": "middle"},
          "fill": {"value": "black"},
          "radius": {"signal": "width", "mult": 0.35, "offset": 12},
          "text": {"field": "browserMajorVer"},
          "theta": {"field": "layout_mid"}
        }
      }
    }
  ]
}

</graph>