# Bubble chart

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Availability:

* Summary view - Period and Total modes only.
* Focused view (when you select and focus on items in a dimension) - Total mode only.
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A Bubble chart uses color-coded circles (bubbles) plotted on an X and Y-axis to represent [measures](https://docs.phocassoftware.com/analytics/customize-your-view-analytics/change-the-measures-analytics). By default, the first measure displays on the X-axis and the second measure displays on the Y-axis. The third measure, if there is one, determines the size of the bubbles. You can swap the measures around to change what displays on each axis and change the bubble size.

In summary view, the chart displays a bubble for each time unit (month/day/year) in the period, as illustrated in example 2 below.

In a focused view, the chart displays a bubble for each focused item, as illustrated in example 1 below.

<details>

<summary>Example 1: Compare the margin and value of selected product classes</summary>

In the Sales database, create a Bubble chart to visualize the high-margin low-value products, and vice versa. Specifically, you want to chart the Value, Value/Item and Margin measures for items in the Product sub class dimension.&#x20;

Prepare the data in the grid:

1. Select the **Product Sub Class** dimension, then select and focus on a number of sub-classes.
2. Select **Mode** > **Total**.
3. Specify the first two measures: Select **Measures** > **Local value** and **Local Value/Item**.

Click the **Chart** button in the top right toolbar above the grid, then click the **Bubble** chart category button on the left of the chart and select the **Bubble** option. The chart displays and all bubbles are the same size.

<img src="https://content.gitbook.com/content/itAvDF3MljQXV0rjHRP7/blobs/sckCK7Ueq6NDrem6HvBj/3022031698.png" alt="" data-size="original">

Add a third measure: From the chart view, select **Measure** > **Reporting Margin %**. The **Reporting Margin %** is now available in the **Radius Values** setting. If it is not automatically selected for you, select it from the list (see image below).

<img src="https://content.gitbook.com/content/itAvDF3MljQXV0rjHRP7/blobs/nSZcRyF1KluLcwJi6Nyw/3021900629.png" alt="" data-size="original">

The bubbles in the chart change size and an extra legend appears on the bottom right to display the relationship between Margin and the bubble size. In this example, you can see that highest value group (Downlights) has a relatively low margin (small circle). The group causing concern is Outside, which has low sales, low value per item and low margin group.

<img src="https://content.gitbook.com/content/itAvDF3MljQXV0rjHRP7/blobs/tXeEFTnW9eMSbYQI5xzK/619352.png" alt="" data-size="original">

</details>

<details>

<summary>Compare the total performance of product classes</summary>

Using the Bubble chart in the above example, click the **Summary** button. The chart updates to display a bubble for each time unit within the selected period, which in this case is Financial YTD and each bubble displays the total performance of the selected product classes for each month so far.

![](https://content.gitbook.com/content/itAvDF3MljQXV0rjHRP7/blobs/6D9hDcIqJlRvDTieblxl/image.png)

</details>

***

{% hint style="success" %}
**Related pages**

You can take the following actions with your chart:&#x20;

[Configure the chart options](https://docs.phocassoftware.com/analytics/visualize-your-data-in-a-chart/configure-the-chart-options) | [Select and focus on a chart segment](https://docs.phocassoftware.com/analytics/visualize-your-data-in-a-chart/select-and-focus-on-a-chart-segment) | [Use the chart legend](https://docs.phocassoftware.com/analytics/visualize-your-data-in-a-chart/use-the-chart-legend) | Save the chart as a favorite | Add the chart to a dashboard | [Export a chart as an image](https://docs.phocassoftware.com/analytics/visualize-your-data-in-a-chart/export-a-chart-as-an-image)

See also the main page: [Visualize your data in a chart](https://docs.phocassoftware.com/analytics/visualize-your-data-in-a-chart)
{% endhint %}


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