Wanting to Aggregate Datetimes

Community Help
1

Notebook

I have a dataset of datetimes and I wanted to see them as a timeseries, counting up how many rows occur in different months/years, etc. When I try this using the rect mark, I end up with many individual marks rather than one big bar for each month. Is this because I have times as well? Do I have to define the year/month in order to aggregate by it?

  • If I have datetimes, how can I aggregate them to show arbitrary frequencies in Plot (like number in each month, for example)?
2

Try binX instead of groupX. The bin transform is for quantitative or temporal data, while the group transform is for categorical or ordinal data.

3

Cool. A comment worth framing. Thanks!