Package org.jfree.chart.demo

Class SampleXYDataset

java.lang.Object

org.jfree.data.AbstractDataset

org.jfree.data.AbstractSeriesDataset

org.jfree.data.AbstractXYDataset

org.jfree.chart.demo.SampleXYDataset

All Implemented Interfaces:

ObjectInputValidation, Serializable, Cloneable, EventListener, Dataset, SeriesChangeListener, SeriesDataset, XYDataset

public class SampleXYDataset
extends AbstractXYDataset
implements XYDataset

A dummy dataset for an XY plot.

Note that the aim of this class is to create a self-contained data source for demo purposes - it is NOT intended to show how you should go about writing your own datasets.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
SampleXYDataset()	Default constructor.

Method Summary

Modifier and Type	Method	Description
int	getItemCount(int series)	Returns the number of items in the specified series.
int	getSeriesCount()	Returns the number of series in the dataset.
String	getSeriesName(int series)	Returns the name of the series.
double	getTranslate()	Returns the translation factor.
Number	getXValue(int series, int item)	Returns the x-value for the specified series and item.
Number	getYValue(int series, int item)	Returns the y-value for the specified series and item.
void	setTranslate(double translate)	Sets the translation constant for the x-axis.

Methods inherited from class org.jfree.data.AbstractXYDataset

getX, getY

Methods inherited from class org.jfree.data.AbstractSeriesDataset

seriesChanged

Methods inherited from class org.jfree.data.AbstractDataset

addChangeListener, clone, getGroup, removeChangeListener, setGroup, validateObject

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.jfree.data.Dataset

addChangeListener, getGroup, removeChangeListener, setGroup

Methods inherited from interface org.jfree.data.XYDataset

getX, getY

Constructor Details

SampleXYDataset

public SampleXYDataset()

Default constructor.

Method Details

getTranslate

public double getTranslate()

Returns the translation factor.

Returns:

the translation factor.

setTranslate

public void setTranslate(double translate)

Sets the translation constant for the x-axis.

Parameters:

translate - the translation factor.

getXValue

public Number getXValue(int series,
int item)

Returns the x-value for the specified series and item. Series are numbered 0, 1, ...

Specified by:

getXValue in interface XYDataset

Parameters:

series - the index (zero-based) of the series.

item - the index (zero-based) of the required item.

Returns:

the x-value for the specified series and item.

getYValue

public Number getYValue(int series,
int item)

Returns the y-value for the specified series and item. Series are numbered 0, 1, ...

Specified by:

getYValue in interface XYDataset

Parameters:

series - the index (zero-based) of the series.

item - the index (zero-based) of the required item.

Returns:

the y-value for the specified series and item.

getSeriesCount

public int getSeriesCount()

Returns the number of series in the dataset.

Specified by:

getSeriesCount in interface SeriesDataset

Specified by:

getSeriesCount in class AbstractSeriesDataset

Returns:

the number of series in the dataset.

getSeriesName

public String getSeriesName(int series)

Returns the name of the series.

Specified by:

getSeriesName in interface SeriesDataset

Specified by:

getSeriesName in class AbstractSeriesDataset

Parameters:

series - the index (zero-based) of the series.

Returns:

the name of the series.

getItemCount

public int getItemCount(int series)

Returns the number of items in the specified series.

Specified by:

getItemCount in interface XYDataset

Parameters:

series - the index (zero-based) of the series.

Returns:

the number of items in the specified series.