Feature Experiment Web Experiment

SDKs APIs

Data Tables Event Segmentation Funnel Analysis Personas Retention Analysis The datepicker The dotted line in Amplitude charts User Composition User counts from past events User Sessions

Experiment duration estimates Mutual exclusion groups Sequential testing Statistical significance

Block and filter internal users Channel classifier Firefox ingestion failure Hide, block, or delete an event or property Instrumentation Missing data Missing mobile attribution events Modify or delete historical data Segment-Amplitude integration Send data to Amplitude Transformations

Access issues Behavioral cohorts Data discrepancies with other platforms Data export Experiment Analysis Export CSV files HTTP v2 API vs Batch Event Upload API Instrument on third-party site builders iOS 14 changes Limits New orgs can't open the menu Plus plan Security and privacy Startup Scholarship plan Unexpected values in user counts

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The dotted line in Amplitude charts

This article covers some frequently asked questions about a dotted line in an Amplitude chart.

Why does my chart show a dotted line?

Why does my chart show a dotted line?

Whenever you see a dotted line in an Amplitude chart, that means Amplitude is still receiving events for that day or data point. Once all relevant data has been collected, the dotted line will become a solid line.

What's an example of a chart showing a dotted line?

If new user performed their first event on March 13 at 7pm. On March 15 at 9 am, you check the retention chart and see this:

The dotted line extending to the March 13 data point tells you there still may be outstanding events for that day. This happens because the Change Over Time metric is calculated in 24-hour-windows. And at 9 am on March 15, we are still within the user’s Day 1 retention period:

Day 0 retention was from June 13 at 7 pm to June 14 at 7 pm
Day 1 retention is from June 14 at 7 pm to June 15 at 7 pm
Day 7 retention will be from June 19 at 7 pm to June 20 at 7 pm

As of 9 am on March 15, this user's Day 1 is not over, which means this data point could still change.

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November 21st, 2024

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