FAQs
- How do I group users with a certain property value that was recently introduced?
- Why does the .CSV file keep failing when creating a cohort?
- Why is the cohort definition greyed out and non-modifiable?
- Why doesn't this cohort support cohort over time?
- How do I create a cohort of users who performed an event X amount of times in the last 30 days?
How do I group users with a certain property value that was recently introduced?
To create a cohort of these users, you can use the most recently feature. This will find users who had a certain property value on their most recent active event in the time frame given.
For example, here Amplitude is querying for users who most recently had "Germany" as the value for the country user property in the last 30 days:
Why does the .CSV file keep failing when creating a cohort?
The .CSV file may only contain user IDs or Amplitude IDs, but not both in the same file. Also, the .CSV cannot contain any other information. (Read more about uploading CSVs as cohorts.) Your .CSV should contain no blank space or other text. If the file is not in the correct format, Amplitude will show an error message and refuse to upload the cohort.
A properly-formatted .CSV file looks like this:
Why is the cohort definition greyed out and non-modifiable?
While it is possible to create cohorts from certain charts, particularly funnel and retention charts, it is not possible to modify the events from within these cohort. In this example of a cohort created from a Funnel Analysis chart, the steps from the funnel are present, but not modifiable. In order to change them, return to the source of the chart, change the steps there, and recreate a new cohort.
Why doesn't this cohort support population over time?
Cohort population is only supported for dynamic cohorts, i.e., cohorts that can be recomputed according to specified criteria. It is not supported for static cohorts. Examples of static cohorts include those imported from a .CSV file or created using Microscope within charts.
How do I create a cohort of users who fired an event a specific number of times in the last 30 days?
The count feature in cohorts allows you to segment these users. The following cohort definition will segment users who fired Play Song or Video ten times or more in the last 30 days.
Read on for more information about cohorts in Amplitude.