vl.join(…joinaggregate)
A convenient shorthand for joinaggregate.
join Method Overviewjoin API Reference# join.groupby(…value)
The data fields for partitioning the data objects into separate groups. If unspecified, all data points will be in a single group.
# join.joinaggregate(…value)
The definition of the fields in the join aggregate, and what calculations to use.