altair.AggregatedFieldDef#
- class altair.AggregatedFieldDef(op=Undefined, field=Undefined, **kwds)#
AggregatedFieldDef schema wrapper
Mapping(required=[op, as])
- Attributes
- op
AggregateOp 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.- field
FieldName The data field for which to compute aggregate function. This is required for all aggregation operations except
"count".- as
FieldName The output field names to use for each aggregated field.
- op
- __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