This website is for version 5. You can find the documentation for version 4 here.


class altair.ExtentTransform(extent=Undefined, param=Undefined, **kwds)#

ExtentTransform schema wrapper

extentstr, FieldName

The field of which to get the extent.

paramstr, ParameterName

The output parameter produced by the extent transform.

__init__(extent=Undefined, param=Undefined, **kwds)#


__init__([extent, param])

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