The pie chart displays the relation between values as well as the relation of a single value to the total. You can use a pie chart when you have a single data series with only positive values.
In the pie chart, the dimensions form sectors of the measure values. A pie chart can have one dimension and up to two measures. The first measure is used to determine the angle of each slice in the chart.
Sales per region in a pie chart.
Optionally, a second measure can be used to determine the radius of each pie slice. This style of pie chart is also known as a rose chart.
Sales by product sub group in a pie chart with the average sales per invoice sales determining slice radius
In the pie presentation of the pie chart, negative values in the radius measure are not supported and will be excluded. Negative values in the radius measure are supported in the donut presentation and will point in towards the center of the pie chart.
Sales by product sub group in a pie chart with radius measure containing a comparison of sales from the previous year
When to use it
The primary use of a pie chart is to compare a certain sector to the total. The pie chart is particularly useful when there are only two sectors, for example yes/no or queued/finished.
We do not recommend that you compare the results of two pie charts with each other.
Advantages
The pie chart provides an instant understanding of proportions when few sectors are used as dimensions. When you use 10 sectors, or less, the pie chart keeps its visual efficiency.
Disadvantages
It may be difficult to compare different sectors of a pie chart, especially a chart with many sectors.
The pie chart takes up a lot of space in relation to the values it visualizes.
Creating a pie chart
You can create a pie chart on the sheet you are editing.
Do the following:
- From the assets panel, drag an empty pie chart to the sheet.
- Click Add dimension and select a dimension or a field.
- Click Add measure and select a measure or create a measure from a field.
The following settings are used by default in a pie chart:
- The top 10 sectors are presented in descending size order, clockwise.
- Colors are presented by dimension.
- Value labels are presented in percent.
After you have created the pie chart, you may want to add a radius measure or adjust its appearance and other settings in the properties panel. For information about styling, see Styling the pie chart. For information about customizing other aspects of the chart's appearance, see Changing the appearance of a visualization.
Styling the pie chart
You have a number of styling options available under Appearance in the properties panel.
Click 
Styling under Appearance > Presentation to further customize the styling of the chart. The styling panel contains various sections under the General and Chart tabs. You can reset your styles by clicking 
next to each section. Clicking Reset all resets styles in both General and Chart.
Customizing the text
You can set the text for the title, subtitle, and footnote under Appearance > General. To hide these elements, turn off Show titles.
The visibility of the different labels on the chart depends on chart-specific settings and label display options. These can be configured in the properties panel.
You can style the text that appears in the chart.
Do the following:
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In the properties panel, expand the Appearance section.
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Under Appearance > Presentation, click
Styling. -
On the General tab, set the font, emphasis style, font size, and color for the following text elements:
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Title
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Subtitle
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Footnote
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On the Chart tab, set the font, font size, and color for the following text elements:
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Dimension label: Style the label for the dimension shown in the chart.
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Dimension value label: Style the individual dimension values.
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Value label: Style the labels which display the measure value (displayed as a value or relative percentage) for each dimension value.
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Legend title: Style the title of the legend.
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Legend labels: Style the labels of the individual legend items.
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Customizing the background
You can customize the background of the chart. The background can be set by color or to an image.
Do the following:
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In the properties panel, expand the Appearance section.
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Under Appearance > Presentation, click
Styling. -
On the General tab of the styling panel, select a background color (single color or expression) or set the background to an image from your media library.
When using a background image, you can adjust image sizing and position.
Customizing the outline and shape
You can customize the outline surrounding the chart, as well as the shape and thickness of the slices.
Do the following:
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In the properties panel, expand the Appearance section.
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Under Appearance > Presentation, click
Styling. -
On the Chart tab of the styling panel, under Outline, set the thickness and color of the outlines of the slices.
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Under Corner radius, set the roundness of the corners of the slices.