altair.CalculateTransform#
- class altair.CalculateTransform(calculate=Undefined, **kwds)#
CalculateTransform schema wrapper
Mapping(required=[calculate, as])
- Attributes
- calculatestring
A expression string. Use the variable
datumto refer to the current data object.- as
FieldName The field for storing the computed formula value.
- __init__(calculate=Undefined, **kwds)#
Methods
__init__([calculate])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