StreamingQuantiles class abstract

Streaming quantile estimator interface with factory constructors for P² (default) and TDigest implementations.

Constructors

StreamingQuantiles(List<double> quantiles)

Creates a P² streaming quantile estimator that maintains approximate positions for the provided quantiles (expressed as 0..1 fractions).

factory

StreamingQuantiles.tDigest({int compression})

Creates a TDigest-based streaming quantile estimator. Optional compression controls accuracy vs memory usage (higher is more accurate).

factory

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

add(Object? value) → void

Adds a sample value to the estimator. Accepts any byte-like value type supported by the underlying implementation.

estimate(double percentile) → double

Returns the estimated value at percentile, where 0..100 indicates the desired percentile (for example, 50 for median, 99 for P99).

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited