Donut Chart Settings
Donut Charts are a derivative of the pie chart and are used in the same manner for displaying contributions to a total.
Panopticon can produce standard Donut Charts in which the donut slice represents a numeric variable that is proportional to the total size of the donut. The color variable can represent either a category or another numeric variable.
Donut Charts can be flat, showing a single set of slices. They can also be hierarchical and display multiple levels of data in a variant called a Multilevel Donut Chart.
A recommended alternative to the Donut Chart is the Treemap, which can display a larger number of data points, and it is easier to compare constituent data points.
The donut chart settings pane is displayed after clicking the Options 
button.
| Setting | Description |
| Show Borders | Determines whether a border is drawn around each leaf. |
| Show Labels | Determines whether labels are displayed within each leaf. |
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