altair.AggregateTransform

class altair.AggregateTransform(aggregate=Undefined, groupby=Undefined, **kwds)

AggregateTransform schema wrapper.

Parameters:

aggregateSequence[dict, AggregatedFieldDef]

Array of objects that define fields to aggregate.

groupbySequence[str, FieldName]

The data fields to group by. If not specified, a single group containing all data objects will be used.

__init__(aggregate=Undefined, groupby=Undefined, **kwds)

Methods

__init__([aggregate, groupby])
copy([deep, ignore])	Return a copy of the object.
from_dict(dct[, validate])	Construct class from a dictionary representation.
from_json(json_string[, validate])	Instantiate the object from a valid JSON string.
resolve_references([schema])	Resolve references in the context of this object's schema or root schema.
to_dict([validate, ignore, context])	Return a dictionary representation of the object.
to_json([validate, indent, sort_keys, ...])	Emit the JSON representation for this object as a string.
validate(instance[, schema])	Validate the instance against the class schema in the context of the rootschema.
validate_property(name, value[, schema])	Validate a property against property schema in the context of the rootschema.