Pie charts

Last updated: Apr 26, 2024

Pie charts

A pie chart is useful for comparing proportions. For example, you can use a pie chart to demonstrate that a greater proportion of Europeans is enrolled in a certain class.

Creating a simple pie chart

In the Chart Type section, click the Pie icon.
The canvas updates to display a pie chart template.
Select a categorical (nominal or ordinal) variable from the Category list. The categories in this variable determine the number of slices in the pie chart.
Select a statistical summary function for the graphic element. For pie charts, you typically want a count-based statistic or a sum. The result of the statistic determines the size of each slice.
Click the Save visualization in the project control. Select Create a new asset or Append to existing asset. Provide a Visualization asset name, an optional description, and a chart name.
Click Apply to save the visualization to the project. The new visualization asset is now available on the Assets tab.

Options

Category

Select a categorical (nominal or ordinal) variable that determines the number of slices in the pie chart.

Summary

Select a statistical summary function for the graphic element. For pie charts, you typically want a count-based statistic or a sum. The result of the statistic determines the size of each slice.

Two types of statistical summary functions are available. The distinction is important because it determines whether you need to specify a Value variable.

Functions that do not require a value variable. Functions that do not require a variable. All count and percentage statistics are in this category. These statistics are available when the Value variable is not defined.
Functions that do require a value variable. Functions that do require a Value variable. For example, the Mean function requires a variable on which the mean is calculated. These statistics are available when the Value variable is not defined.

Value

This field displays when a Summary function that requires a scale variable, is selected. Select a variable to serve as the scale variable.

Pie type

The following styles are available.

Normal: The pie segments display as normal slices.
Ring: The pie segments display as a ring. This style is also known as a doughnut chart.
Rose: Unlike the normal pie chart, which uses a common radius, the pie segment sizes vary depending on their value.
Rose area: Unlike the normal pie chart, which uses a common radius, the pie segment sizes vary depending on their area.
Rose ring: Unlike the normal pie chart, which uses a common radius, the pie segment sizes vary depending on their value and the segments display as a ring.
Half rose: Same as Rose, except the chart is represented as one-half of a pie.

Show value