altair.OpacityValue#
- class altair.OpacityValue(value, condition=Undefined, **kwds)#
OpacityValue schema wrapper.
- Parameters:
- conditiondict,
ConditionalValueDefnumberExprRef,ConditionalMarkPropFieldOrDatumDef,ConditionalParameterValueDefnumberExprRef,ConditionalPredicateValueDefnumberExprRef,ConditionalParameterMarkPropFieldOrDatumDef,ConditionalPredicateMarkPropFieldOrDatumDef, Sequence[dict,ConditionalValueDefnumberExprRef,ConditionalParameterValueDefnumberExprRef,ConditionalPredicateValueDefnumberExprRef] A field definition or one or more value definition(s) with a parameter predicate.
- valuedict, float,
ExprRef A constant value in visual domain (e.g.,
"red"/"#0099ff"/ gradient definition for color, values between0to1for opacity).
- conditiondict,
- __init__(value, condition=Undefined, **kwds)#
Methods
__init__(value[, condition])copy([deep, ignore])Return a copy of the object.
from_dict(dct[, validate])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, 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.
Attributes
conditionA field definition or one or more value definition(s) with a parameter predicate.
valueA constant value in visual domain (e.g., "red" / "#0099ff" / [gradient definition](https://vega.github.io/vega-lite/docs/types.html#gradient) for color, values between 0 to 1 for opacity).