altair.AggregatedFieldDef

class altair.AggregatedFieldDef(op=Undefined, field=Undefined, **kwds)

AggregatedFieldDef schema wrapper

Mapping(required=[op, as])

Attributes

opAggregateOp

The aggregation operation to apply to the fields (e.g., "sum", "average", or "count" ). See the full list of supported aggregation operations for more information.

fieldFieldName

The data field for which to compute aggregate function. This is required for all aggregation operations except "count".

asFieldName

The output field names to use for each aggregated field.

__init__(op=Undefined, field=Undefined, **kwds)

Methods

__init__([op, field])
copy([deep, ignore])	Return a copy of the object
from_dict(dct[, validate, _wrapper_classes])	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, ignore, context, indent, ...])	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