altair.ExprRef#

class altair.ExprRef(expr=Undefined, **kwds)#

ExprRef schema wrapper

Mapping(required=[expr])

Attributes
exprstring

Vega expression (which can refer to Vega-Lite parameters).

__init__(expr=Undefined, **kwds)#

Methods

__init__([expr])

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