altair.VariableParameter#
- class altair.VariableParameter(name=Undefined, bind=Undefined, expr=Undefined, value=Undefined, **kwds)#
VariableParameter schema wrapper
Mapping(required=[name])
- Attributes
- name
ParameterName A unique name for the variable parameter. Parameter names should be valid JavaScript identifiers: they should contain only alphanumeric characters (or “$”, or “_”) and may not start with a digit. Reserved keywords that may not be used as parameter names are “datum”, “event”, “item”, and “parent”.
- bind
Binding Binds the parameter to an external input element such as a slider, selection list or radio button group.
- expr
Expr An expression for the value of the parameter. This expression may include other parameters, in which case the parameter will automatically update in response to upstream parameter changes.
- valueAny
The initial value of the parameter.
Default value:
undefined
- name
- __init__(name=Undefined, bind=Undefined, expr=Undefined, value=Undefined, **kwds)#
Methods
__init__([name, bind, expr, value])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