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

JoinAggregateFieldDef schema wrapper

opAggregateOp, Literal[‘argmax’, ‘argmin’, ‘average’, ‘count’, ‘distinct’, ‘max’, ‘mean’, ‘median’, ‘min’, ‘missing’, ‘product’, ‘q1’, ‘q3’, ‘ci0’, ‘ci1’, ‘stderr’, ‘stdev’, ‘stdevp’, ‘sum’, ‘valid’, ‘values’, ‘variance’, ‘variancep’, ‘exponential’, ‘exponentialb’]

The aggregation operation to apply (e.g., "sum", "average" or "count" ). See the list of all supported operations here.

fieldstr, FieldName

The data field for which to compute the aggregate function. This can be omitted for functions that do not operate over a field such as "count".

asstr, FieldName

The output name for the join aggregate operation.

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


__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 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