# Visualization - Pies - Donut

A donut chart is essentially a pie chart with a hollow center. They are useful for part-to-whole comparisons.

A Donut Chart or Doughnut chart is essentially a pie chart with a hollow center. They are useful for part-to-whole comparisons.

## Example

The following example shows the distribution of ages among survey respondents.

### Create a donut chart in Displayr

1. Go to Insert > Visualization > Donut Chart
2. Under Inputs > DATA SOURCE > Variables in ‘Data’, select the variable you want to chart.

## Object Inspector Options

The following is an explanation of the options available in the Object Inspector for this specific visualization. Refer to Visualization Options for general chart formatting options.

### Chart

APPERANCE
Donut hole radius % Radius of the hole, as a percentage of the radius of the donut.
Border Color Color to use as an outline for each segment.

## Code

{
"formChartType": "Donut",
"formStackSeries": false,
"formSmallMultiples": false,
"formAsPercentages": false,
"formScatterLabelType": "As hover text"
}