# Uses of Class
org.apache.datasketches.kll.KllDoublesSketch

Packages that use KllDoublesSketch
Package
Description
org.apache.datasketches.kll
This package is for the implementations of the sketch algorithm developed by Zohar Karnin, Kevin Lang, and Edo Liberty that is commonly referred to as the "KLL" sketch after the authors' last names.

## Uses of KllDoublesSketch in org.apache.datasketches.kll

Methods in org.apache.datasketches.kll that return KllDoublesSketch
Modifier and Type
Method
Description
`static KllDoublesSketch`
KllDoublesSketch.`heapify(MemorySegment srcSeg)`
Factory heapify takes a compact sketch image in MemorySegment and instantiates an on-heap sketch.
`static KllDoublesSketch`
KllDoublesSketch.`newDirectInstance(int k, MemorySegment dstSeg, MemorySegmentRequest mSegReq)`
Create a new direct updatable instance of this sketch with a given k.
`static KllDoublesSketch`
KllDoublesSketch.`newDirectInstance(MemorySegment dstSeg)`
Create a new direct updatable instance of this sketch with the default k.
`static KllDoublesSketch`
KllDoublesSketch.`newHeapInstance()`
Create a new heap instance of this sketch with the default k = 200.
`static KllDoublesSketch`
KllDoublesSketch.`newHeapInstance(int k)`
Create a new heap instance of this sketch with a given parameter k.
`static KllDoublesSketch`
KllDoublesSketch.`wrap(MemorySegment srcSeg)`
Wrap a sketch around the given source MemorySegment containing sketch data that originated from this sketch.
`static KllDoublesSketch`
KllDoublesSketch.`wrap(MemorySegment srcSeg, MemorySegmentRequest mSegReq)`
Wrap a sketch around the given source MemorySegment containing sketch data that originated from this sketch and including an optional, user defined `MemorySegmentRequest`.