This example visualizes daily user activity by counting how many user records reference each date. It shows a timeline of update frequencies derived from a hardcoded JavaScript object mapping user IDs to date-keyed booleans. The code builds a string of user IDs and their associated dates, then uses `String.split(date)` on that concatenated string to count occurrences of each date in the `updates` object. It relies on the Moment.js library to generate the last ten dates via `moment().subtract()` and formats them as `DD-MM-YYYY`. The rendering itself is absent—the example focuses solely on data aggregation logic, with no charting or DOM output.