altair.FilterTransform
- class altair.FilterTransform(filter=Undefined, **kwds)
-
FilterTransform schema wrapper
Mapping(required=[filter])
- Attributes
-
- filter
PredicateComposition
-
The
filter
property must be a predication definition, which can take one of the following forms:1) an expression string, where
datum
can be used to refer to the current data object. For example,{filter: "datum.b2 > 60"}
would make the output data includes only items that have values in the fieldb2
over 60.2) one of the field predicates : equal, lt, lte, gt, gte, range, oneOf, or valid,
3) a selection predicate, which define the names of a selection that the data point should belong to (or a logical composition of selections).
4) a logical composition of (1), (2), or (3).
- filter
- __init__(filter=Undefined, **kwds)
Methods
__init__
([filter])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