com.jidesoft.chart.model
Class SamplingModel

java.lang.Object
  com.jidesoft.chart.model.AbstractDelegatingChartModel
      com.jidesoft.chart.model.SamplingModel

All Implemented Interfaces:

AnnotatedChartModel, AnnotationModel, ChartModel, ChartModelListener, Named, Iterable<Chartable>

public class SamplingModel
extends AbstractDelegatingChartModel

A ChartModel that presents a reduced-size version of its delegate by sampling its data. A sampling rate of 10 means that only one in 10 points of the original data set appear in the points presented by this model. It therefore represents a 10-fold reduction in size.

Author:

Simon White (swhite@catalysoft.com)

Constructor Summary

SamplingModel()

SamplingModel(AnnotatedChartModel delegate)

Method Summary

Annotation	getAnnotation(int n) Gets the nth annotation.
int	getAnnotationCount() Returns the number of annotations
Chartable	getPoint(int n) Gets the nth point.
int	getPointCount() Gets the number of points in the data set
int	getSamplingRate()
boolean	isAnnotationsVisible() Use this method to discover whether annotations should be shown or hidden.
void	setAnnotationsVisible(boolean visible) Specify whether annotations should be shown
void	setSamplingRate(int samplingRate)
protected void	update()

Methods inherited from class com.jidesoft.chart.model.AbstractDelegatingChartModel

addChartModelListener, chartModelChanged, equals, fireModelChanged, getDelegate, getDelegate, getDelegates, getName, hashCode, init, isCyclical, iterator, removeChartModelListener, setDelegate, setDelegates, setDelegates, setName

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SamplingModel

public SamplingModel()

SamplingModel

public SamplingModel(AnnotatedChartModel delegate)

Method Detail

getSamplingRate

public int getSamplingRate()

setSamplingRate

public void setSamplingRate(int samplingRate)

getAnnotationCount

public int getAnnotationCount()

Description copied from interface: AnnotationModel

Returns the number of annotations

Specified by:

getAnnotationCount in interface AnnotationModel

Specified by:

getAnnotationCount in class AbstractDelegatingChartModel

Returns:

the number of annotations

getAnnotation

public Annotation getAnnotation(int n)

Description copied from interface: AnnotationModel

Gets the nth annotation.

Specified by:

getAnnotation in interface AnnotationModel

Specified by:

getAnnotation in class AbstractDelegatingChartModel

Parameters:

n - the index.

Returns:

the nth annotation

isAnnotationsVisible

public boolean isAnnotationsVisible()

Description copied from interface: AnnotationModel

Use this method to discover whether annotations should be shown or hidden.

Returns:

whether annotations should be shown

setAnnotationsVisible

public void setAnnotationsVisible(boolean visible)

Description copied from interface: AnnotationModel

Specify whether annotations should be shown

Parameters:

visible - whether annotations should be shown

getPoint

public Chartable getPoint(int n)

Description copied from interface: ChartModel

Gets the n^th point. The first point has index 0.

Specified by:

getPoint in interface ChartModel

Specified by:

getPoint in class AbstractDelegatingChartModel

Parameters:

n - the index

Returns:

the n^th point in the ChartModel.

getPointCount

public int getPointCount()

Description copied from interface: ChartModel

Gets the number of points in the data set

Specified by:

getPointCount in interface ChartModel

Specified by:

getPointCount in class AbstractDelegatingChartModel

Returns:

the number of points

update

protected void update()

Specified by:

update in class AbstractDelegatingChartModel