
vl_aggregate
vl_aggregate.RdAdd AggregateTransform to a vega-lite spec.
Arguments
- spec
- An input vega-lite spec 
- aggregate
- Array of objects that define fields to aggregate. 
- groupby
- The data fields to group by. If not specified, a single group containing all data objects will be used. 
- .object
- Directly input an object, rather than creating one via the other arguments. Should not be used in conjunction with the other arguments other than - spec. Objects can be of type: AggregateTransform