UpdateDoublesSketch (datasketches-java 6.1.0 API)

java.lang.Object
- org.apache.datasketches.quantiles.DoublesSketch
- - org.apache.datasketches.quantiles.UpdateDoublesSketch

All Implemented Interfaces:

QuantilesAPI, QuantilesDoublesAPI
```
public abstract class UpdateDoublesSketch
extends DoublesSketch
```
Author:

Jon Malkin

Field Summary
- Fields inherited from interface org.apache.datasketches.quantilescommon.QuantilesAPI
  EMPTY_MSG, MEM_REQ_SVR_NULL_MSG, NOT_SINGLE_ITEM_MSG, SELF_MERGE_MSG, TGT_IS_READ_ONLY_MSG, UNSUPPORTED_MSG

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`CompactDoublesSketch`	`compact()`
`CompactDoublesSketch`	`compact(org.apache.datasketches.memory.WritableMemory dstMem)`	Returns a compact version of this sketch.
`static UpdateDoublesSketch`	`heapify(org.apache.datasketches.memory.Memory srcMem)`
`abstract void`	`update(double item)`	Updates this sketch with the given double data item
`static UpdateDoublesSketch`	`wrap(org.apache.datasketches.memory.WritableMemory srcMem)`	Wrap this sketch around the given non-compact Memory image of a DoublesSketch.

Methods inherited from class org.apache.datasketches.quantiles.DoublesSketch
builder, downSample, getCDF, getCompactSerialiedSizeBytes, getCurrentCompactSerializedSizeBytes, getCurrentUpdatableSerializedSizeBytes, getK, getKFromEpsilon, getMaxItem, getMinItem, getN, getNormalizedRankError, getNormalizedRankError, getNumRetained, getPMF, getQuantile, getQuantileLowerBound, getQuantiles, getQuantileUpperBound, getRank, getRankLowerBound, getRanks, getRankUpperBound, getSerializedSizeBytes, getSortedView, getUpdatableStorageBytes, hasMemory, isDirect, isEmpty, isEstimationMode, isReadOnly, isSameResource, iterator, putMemory, putMemory, reset, toByteArray, toByteArray, toString, toString, toString, toString, wrap

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.datasketches.quantilescommon.QuantilesDoublesAPI
getCDF, getPMF, getQuantile, getQuantiles, getRank, getRanks

- Method Detail
  - wrap
```
public static UpdateDoublesSketch wrap(org.apache.datasketches.memory.WritableMemory srcMem)
```
    Wrap this sketch around the given non-compact Memory image of a DoublesSketch.
    
    Parameters:
    
    srcMem - the given Memory image of a DoublesSketch that may have data,
    
    Returns:
    
    a sketch that wraps the given srcMem
  - update
```
public abstract void update(double item)
```
    Updates this sketch with the given double data item
    
    Parameters:
    
    item - an item from a stream of items. NaNs are ignored.
  - heapify
```
public static UpdateDoublesSketch heapify(org.apache.datasketches.memory.Memory srcMem)
```
  - compact
```
public CompactDoublesSketch compact()
```
    Returns:
    
    a CompactDoublesSketch of this class
  - compact
```
public CompactDoublesSketch compact(org.apache.datasketches.memory.WritableMemory dstMem)
```
    Returns a compact version of this sketch. If passing in a Memory object, the compact sketch will use that direct memory; otherwise, an on-heap sketch will be returned.
    
    Parameters:
    
    dstMem - An optional target memory to hold the sketch.
    
    Returns:
    
    A compact version of this sketch