A pie chart is a statistical chart that uses a circle to represent the total amount, and the size of each sector within the circle to indicate the percentage of each part relative to the total. It is also known as a sector chart. The product provides three components: basic pie chart, donut chart, and Nightingale rose chart.

• Donut chart: Represents the total amount in the form of a ring. Compared to a regular pie chart, a donut chart can simultaneously plot multiple samples or data series.
• Nightingale rose chart: Also known as a polar area chart, which was invented by Florence Nightingale and is a colorful circular histogram.

2.1 Common usage scenarios #

A pie chart can clearly display the proportion of each data item in a data series. It is suitable for viewing the relationship between each part and the total, and also makes it easy to compare the quantities of each part.
Pie chart example

Donut chart example

Nightingale rose chart example

2.2 Usage process example #

Step 1: Set dimensions, metrics, and filter conditions
Select [Car model] as the dimension and [Brand sales] as the metric.

Step 2: Select the chart panel - pie chart

Step 3: Modify the chart format as needed
For example, to focus only on the top 3 regions for [Brand sales], you can set the number of sectors to 4, so that the sectors for other regions are merged into one sector for display.

3.1 Pie chart icon #

Click the small triangle under the pie chart to switch between the basic pie chart, donut chart, and Nightingale rose chart.

3.2 Configuration rules #

The basic pie chart, donut chart, and Nightingale rose chart support multi-dimension single metric (one or more dimensions and one metric), and zero-dimension multi-metric (zero dimensions and multiple metrics) for plotting.

3.3 Edit colors #

You can set corresponding colors for the pie chart. The product has multiple built-in color schemes.

It also supports Custom Color Schemes.

3.4 Sectors #

• Number of sectors: Set the maximum number of sectors to display, with a default of 20. If the total number of sectors is less than or equal to the set value, all categories are displayed as normal. If the total number of sectors is greater than the set value, the (number of sectors - 1) largest categories are displayed, and the remaining sectors are merged into one category labeled [Other] for display.
  Example: The total number of sectors is 5, and set the number of sectors to 4.
• Sector radius: The sector radius can be adjusted.
  

3.5 Special values #

See 3.7 Special values.

3.6 Legend and labels #

Legend:

• You can click the switch button on the right to choose whether to display legend information.
• You can set the display position of the legend in the chart: top, bottom, left, or right.
• You can set the legend alignment: align to top/left, center, or align to bottom/right.
• You can set the maximum number of legend columns, as well as the font and color.
• You can set the legend display mode. When there are too many legend items, you can choose to use a pager or a scrollbar for display.

Labels:
See 3.8 Legend and labels.

3.7 Tooltip information #

See 3.9 Tooltips information.

3.8 In-chart control styles #

See 3.11 In-chart control styles.

3.9 Restore default settings #

Click [Restore default settings] to reset all of the above chart settings to default.