Build an event segmentation analysis

For most users, Event Segmentation is the foundational Amplitude chart. It shows what your users do in your product. With the Event Segmentation chart, you can build analyses that:

• Measure the top events performed over a selected time period.
• Analyze how often users trigger events.
• Determine the count of unique users that trigger events in your product.
• Clarify which users tend to trigger certain events.

Like most Amplitude charts, Event Segmentation charts combine events and event properties with user segments. These analyses can be simple—for example, counting the number of users that fire a specific event—or they can use intricate formulas of events.

This article describes the steps to build a segmentation analysis in Amplitude.

Before you begin

If you haven't already read up on the basics of building charts in Amplitude, do so before proceeding.

Refer to selecting the best measurement for your Event Segmentation chart for more information.

Set up an event segmentation analysis

An event segmentation analysis shows what different groups of users do in your product. Tell Amplitude which events you're interested in, and which users to include in the analysis.

To build an Event Segmentation chart, follow these steps:

1. In the Events Module, select the starting event or metric. Choose a specific event that's instrumented in Amplitude, or tell Amplitude to consider any event as the starting event for this analysis by selecting Any Event from the list of available events.

   You can also create an in-line custom event or create a new metric at this point.

2. To add properties to your starting event, click + Filter by, select the property name, and specify the property value you're interested in.

3. Select another event to include. You can choose up to ten events, and you can add properties to these events.

4. In the Measured As Module, specify how to measure your results. Unique users and event totals are the most common options, but several others are available.

5. In the Segmentation Module, identify the user segment to include in this analysis. To import an already saved segment, click Saved and select the segment you want from the list. Otherwise, Amplitude targets all users.

6. To build your own user segment instead of importing a saved one, add properties. Click + Filter by, choose the property you want to include, and specify the property value you're interested in.

7. To narrow your focus further, include only users who already performed certain actions. Click + Performed, then choose the event you're interested in.

8. To add another user segment, click + Add Segment, and repeat steps 6 and 7.

In the chart area, your Event Segmentation chart appears, along with a tabular view of your results.

Customize your chart's Y-axis

If the data in your chart doesn't fit the default scale, customize the chart's Y-axis for better viewability.

To customize the Y-axis, click it on the chart. The Custom Y-axis modal appears.

Axis name and values

By default, the Y-axis name comes from the measurement that the chart displays. For example, if your chart displays event totals, the axis name is Totals. To share the chart or provide more context, enter a more descriptive name.

To help the data fit more cleanly on the chart, set minimum and maximum values. By default, a chart's Y-axis starts at zero. Sometimes your data falls in a small range, but with higher value.

In the examples below, the chart on the left uses the default axis values, and the chart on the right has the minimum set to 10000 and the maximum set to 15000.

Enable Display data out of the min and max value so that any data outside the range you set still appears on the chart.

Customize the unit of measure that the chart displays so it represents the data accurately. Choose from:

• Raw number.
• Percent.
• Currency (defaults to the currency set at the project level).
• Custom (add a prefix or suffix).

Add a second Y-axis

If the chart displays more than one event, add a second Y-axis for better visibility. For example, on a chart that tracks Weekly Active Users, if you add a second event that measures new users, add a second Y-axis to keep both events visible.

In this example, Weekly Active Users, measured by Any Active Event, falls in the range of 12,000 - 13,500. Weekly New Users has a range between 5,500 and 6,000. The second Y-axis displays both events with enough granularity to observe increases and decreases over time.

The second Y-axis supports the same customization options as the primary Y-axis.