DownSampleImpl (Javadocs [I2P+ 2.13.0+]

java.lang.Object
- eu.bengreen.data.utility.DownSampleImpl

All Implemented Interfaces:
DownSampler
Direct Known Subclasses:
LargestTriangleThreeBuckets, LargestTriangleThreeBucketsTime
```
public abstract class DownSampleImpl
extends Object
implements DownSampler
```
Naive implementation of down sample with simple array input Largest-Triangle-Three-Buckets, from Sveinn Steinarsson's thesis, section 4.2..

Nested Class Summary
- Nested classes/interfaces inherited from interface org.rrd4j.graph.DownSampler
  DownSampler.DataSet

Field Summary
Fields
Modifier and Type Field and Description
protected int threshold
Number of data points to downsample to.

Fields
Modifier and Type	Field and Description
`protected int`	`threshold` Number of data points to downsample to.

Constructor Summary
Constructors
Modifier Constructor and Description
protected DownSampleImpl(int threshold)
Number of data points to downsample to.

Constructors
Modifier	Constructor and Description
`protected`	`DownSampleImpl(int threshold)` Number of data points to downsample to.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`DownSampler.DataSet`	`downsize(long[] timestamps, double[] values)` Downsample the given data.
`protected abstract DownSampler.DataSet`	`downsizeImpl(DownSampler.DataSet sampled, long[] timestamps, double[] values)`
`protected void`	`setDataSetLine(DownSampler.DataSet sampled, int rank, long timestamp, double value)` Populate a single element in the downsampled data set.

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

Field Detail
- threshold
```
protected final int threshold
```
  Number of data points to downsample to.

Constructor Detail
- DownSampleImpl
```
protected DownSampleImpl(int threshold)
```
  Number of data points to downsample to.
  Parameters:
  threshold - number of data points to downsample to

Method Detail

downsize
```
public DownSampler.DataSet downsize(long[] timestamps,
                                    double[] values)
```
Description copied from interface: DownSampler
Downsample the given data.
Specified by:
downsize in interface DownSampler
Parameters:
timestamps - the timestamps
values - the values
Returns:
the downsampled data set

downsizeImpl

protected abstract DownSampler.DataSet downsizeImpl(DownSampler.DataSet sampled,
                                                    long[] timestamps,
                                                    double[] values)

setDataSetLine

protected void setDataSetLine(DownSampler.DataSet sampled,
                              int rank,
                              long timestamp,
                              double value)

Populate a single element in the downsampled data set.

Class DownSampleImpl

Nested Class Summary

Nested classes/interfaces inherited from interface org.rrd4j.graph.DownSampler

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

threshold

Constructor Detail

DownSampleImpl

Method Detail

downsize

downsizeImpl

setDataSetLine