altair.WindowFieldDef#
- class altair.WindowFieldDef(op=Undefined, field=Undefined, param=Undefined, **kwds)#
WindowFieldDef schema wrapper.
- Parameters:
- op
AggregateOp,WindowOnlyOp, Literal[‘argmax’, ‘argmin’, ‘average’, ‘count’, ‘distinct’, ‘max’, ‘mean’, ‘median’, ‘min’, ‘missing’, ‘product’, ‘q1’, ‘q3’, ‘ci0’, ‘ci1’, ‘stderr’, ‘stdev’, ‘stdevp’, ‘sum’, ‘valid’, ‘values’, ‘variance’, ‘variancep’, ‘exponential’, ‘exponentialb’, ‘row_number’, ‘rank’, ‘dense_rank’, ‘percent_rank’, ‘cume_dist’, ‘ntile’, ‘lag’, ‘lead’, ‘first_value’, ‘last_value’, ‘nth_value’] The window or aggregation operation to apply within a window (e.g.,
"rank","lead","sum","average"or"count"). See the list of all supported operations here.- fieldstr,
FieldName The data field for which to compute the aggregate or window function. This can be omitted for window functions that do not operate over a field such as
"count","rank","dense_rank".- paramfloat
Parameter values for the window functions. Parameter values can be omitted for operations that do not accept a parameter.
See the list of all supported operations and their parameters here.
- asstr,
FieldName The output name for the window operation.
- op
- __init__(op=Undefined, field=Undefined, param=Undefined, **kwds)#
Methods
__init__([op, field, param])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.