Template:Graph:PieChart/doc

Pie charts

You can add a pie chart with a call to this template. This template uses the Vega version 2 JSON specification. An older template {{Pie chart}} is based on CSS rendering. The template GraphChart allows adding of map, line, bar and area charts, as well as stacked line, stacked bar and stacked area charts, but no pie charts. The template GraphChart also uses Vega version 2 and uses Module:Graph with Scribunto/Lua programming. This Template:Graph:PieChart doesn't use Lua.

Parameters

• radius specifies the radius of the pie chart in pixels, default is 100
• legend specifies the title to be displayed above the legend, default is "Legend". To hide legend, set it to a "-" value without quotes.
• values this is a list between square brackets of comma separated label value pairs between single curly braces like [ {"x": "Peaches","y": 100}, {"x": "Plums","y": 32}]
• rangeliteral this can be one of the Vega specified rangeliterals, default is "category10", but can also be a list like ["red", "green"]

Examples

Example usage:

{{Graph:PieChart|legend=Fruits|radius=125|values= [
      {"x": "Peaches","y": 100},
      {"x": "Plums","y": 32},
      {"x": "Blueberries","y": 80},
      {"x": "Strawberries","y": 46},
      {"x": "Bananas","y": 41}
    ] 
}}

<graph> {

 "version": 2,
 "height": 100,
 "width": 100,

"legends": [{"title": "Fruits","fill": "color"}],

 "padding": "auto",
 "marks": [
   {
     "properties": {
       "enter": {
         "innerRadius": {"value": 0 },
         "stroke": {"value": "white"},
         "startAngle": {"field": "layout_start"},
         "outerRadius": {"value": 100 },
         "endAngle": {"field": "layout_end"},
         "fill": {"field": "x","scale": "color"},
       }
     },
     "from": {
       "data": "table",
       "transform": [{"field": "y","type": "pie"}]
     },
     "type": "arc"
   }
 ],
 "data": [
   {
     "name": "table", "values": [
     {"x": "Peaches","y": 100},
     {"x": "Plums","y": 32},
     {"x": "Blueberries","y": 80},
     {"x": "Strawberries","y": 46},
     {"x": "Bananas","y": 41}
   ]
   }
 ],
 "scales": [
   {
     "name": "color",
     "range": "category10",
     "domain": {"data": "table","field": "x"},
     "type": "ordinal"
   }
 ]

} </graph>

TemplateData

This is the TemplateData for this template used by TemplateWizard, VisualEditor and other tools. See a monthly parameter usage report for Template:Graph:PieChart in articles based on its TemplateData.

TemplateData for Graph:PieChart

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

Template parameters

This template prefers inline formatting of parameters.

Parameter		Description	Type	Status
Radius	radius	Specify the radius of the pie in number of pixels Default 100 Example 100	Number	suggested
Legend Title	legend	The title that will appear above the legend, or '-' to hide it Default "Legend" Example "Fruits"	String	suggested
Inner Radius	innerradius	To create a doughnut chart specify an inner radius Default 0 Example 0	Number	optional
Values	values data	Specify the label value pairs Example [ {"x": "Peaches","y": 100}, {"x": "Plums","y": 32}, {"x": "Blueberries","y": 80}, {"x": "Strawberries","y": 46}, {"x": "Bananas","y": 41} ]	Unknown	required
The colors of the slices	rangeliteral 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