Crate sketches_rust

Expand description

This crate provides a direct port of the Java DDSketch implementation to Rust.

Usage

Add multiple samples to a DDSketch and invoke the get_value_at_quantile method to pull any quantile from 0.0 to 1.0.

    use self::sketches_rust::DDSketch;
    let mut d = DDSketch::collapsing_lowest_dense(0.02,100).unwrap();
    d.accept(1.0);
    d.accept(2.0);
    d.accept(3.0);
    let c = d.get_count();
    assert_eq!(c, 3.0);
    let q = d.get_value_at_quantile(0.5).unwrap();
    assert!(q < 2.01 && q > 1.99);

Also you could merge other DDSketch:

    use self::sketches_rust::DDSketch;
    let mut d1 = DDSketch::collapsing_lowest_dense(0.02,100).unwrap();
    d1.accept(1.0);
    d1.accept(2.0);
    d1.accept(3.0);
    assert_eq!(3.0,  d1.get_count());
    let mut d2 = DDSketch::collapsing_lowest_dense(0.02,100).unwrap();
    d2.accept(1.0);
    d2.accept(2.0);
    d2.accept(3.0);
    assert_eq!(3.0,  d2.get_count());
    d2.merge_with(&mut d1).unwrap();
    assert_eq!(6.0,  d2.get_count());

Structs

Enums

Error