Pie charts

A pie chart displays what percent of each condition makes up the entire count of a data field. The visualization can show a single value or multiple bucketed values.

When to use pie charts

Use pie charts to compare the relative share of each condition making up a metric. You can select pie segments to filter other visualizations on the same dashboard.

Creating a pie chart

The examples on this page use the Sample flight data dataset. Before you begin, complete the prerequisites.

To create a pie chart, follow these steps:

1. In the New Visualization dialog, select Pie, then select your index pattern (for example, opensearch_dashboards_sample_data_flights).

   The visualization displays an annular (ring) style pie chart showing only one value. The tooltip reveals the value, a count of the documents in the index pattern. For the opensearch_dashboards_sample_data_flights data, this is 13059 if the date range contains all the documents.

   If your visualization displays a different value, make sure that your time filter window is large enough to encompass all the sample flight data.

2. Under Metrics, expand Slice size count.

3. Set Aggregation to Unique Count and Field to FlightNum.

   For a pie chart, bucketed values of the metric must add to 100%. Only those aggregations with this property are displayed.

4. Select Update.

   The pie chart displays 12,932, presented as a single-value annular pie chart.

5. To visualize the composition of the field by different conditions, bucket the data:

   1. Under Buckets, select Add > Split slices.
   2. Set Aggregation to Terms, Field to OriginCountry, and Size to 5.
   3. Select Group other values in separate bucket so that the total number of unique flights is accurately represented.
   4. Select Update.

   The visualization shows that Italy and the U.S. originate the most flights. The top five countries account for almost half of unique flight numbers.

6. (Optional) Display the visualization as a traditional rather than annular pie chart:

   1. Select the Options tab.
   2. In the Pie settings panel, deselect Donut.
   3. Select Update.

   The visualization shows a wedge pie chart of the top five countries with all others grouped, as shown in the following image.

   

Configuring a pie chart

For information about general visualization configuration, see Configuring visualizations.

Options tab

Next steps

• To choose a different visualization type, see Choosing a visualization type.
• To add this visualization to a dashboard, see Creating dashboards.