org.jfree.chart.renderer.xy

Class XYDifferenceRenderer

java.lang.Object

org.jfree.chart.renderer.AbstractRenderer

org.jfree.chart.renderer.xy.AbstractXYItemRenderer

org.jfree.chart.renderer.xy.XYDifferenceRenderer

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.EventListener, AnnotationChangeListener, LegendItemSource, XYItemRenderer, org.jfree.util.PublicCloneable

public class XYDifferenceRenderer
extends AbstractXYItemRenderer
implements XYItemRenderer, org.jfree.util.PublicCloneable

A renderer for an XYPlot that highlights the differences between two series. The example shown here is generated by the DifferenceChartDemo1.java program included in the JFreeChart demo collection:

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private java.awt.Shape	legendLine The shape to display in the legend item.
private java.awt.Paint	negativePaint The paint used to highlight negative differences (y(0) < y(1)).
private java.awt.Paint	positivePaint The paint used to highlight positive differences (y(0) > y(1)).
private boolean	roundXCoordinates This flag controls whether or not the x-coordinates (in Java2D space) are rounded to integers.
private static long	serialVersionUID For serialization.
private boolean	shapesVisible Display shapes at each point?

Fields inherited from class org.jfree.chart.renderer.AbstractRenderer

DEFAULT_OUTLINE_PAINT, DEFAULT_OUTLINE_STROKE, DEFAULT_PAINT, DEFAULT_SHAPE, DEFAULT_STROKE, DEFAULT_VALUE_LABEL_FONT, DEFAULT_VALUE_LABEL_PAINT, ZERO

Constructor Summary

Constructors

Constructor and Description
XYDifferenceRenderer() Creates a new renderer with default attributes.
XYDifferenceRenderer(java.awt.Paint positivePaint, java.awt.Paint negativePaint, boolean shapes) Creates a new renderer.

Method Summary

Modifier and Type	Method and Description
private boolean	areSeriesDisjoint(XYDataset x_dataset) Determines if the two (2) series are disjoint.
java.lang.Object	clone() Returns a clone of the renderer.
private void	createPolygon(java.awt.Graphics2D x_graphics, java.awt.geom.Rectangle2D x_dataArea, XYPlot x_plot, ValueAxis x_domainAxis, ValueAxis x_rangeAxis, boolean x_positive, java.util.LinkedList x_xValues, java.util.LinkedList x_yValues) Draws the visual representation of a polygon
void	drawItem(java.awt.Graphics2D g2, XYItemRendererState state, java.awt.geom.Rectangle2D dataArea, PlotRenderingInfo info, XYPlot plot, ValueAxis domainAxis, ValueAxis rangeAxis, XYDataset dataset, int series, int item, CrosshairState crosshairState, int pass) Draws the visual representation of a single data item.
protected void	drawItemPass0(java.awt.Graphics2D x_graphics, java.awt.geom.Rectangle2D x_dataArea, PlotRenderingInfo x_info, XYPlot x_plot, ValueAxis x_domainAxis, ValueAxis x_rangeAxis, XYDataset x_dataset, int x_series, int x_item, CrosshairState x_crosshairState) Draws the visual representation of a single data item, first pass.
protected void	drawItemPass1(java.awt.Graphics2D x_graphics, java.awt.geom.Rectangle2D x_dataArea, PlotRenderingInfo x_info, XYPlot x_plot, ValueAxis x_domainAxis, ValueAxis x_rangeAxis, XYDataset x_dataset, int x_series, int x_item, CrosshairState x_crosshairState) Draws the visual representation of a single data item, second pass.
boolean	equals(java.lang.Object obj) Tests this renderer for equality with an arbitrary object.
LegendItem	getLegendItem(int datasetIndex, int series) Returns a default legend item for the specified series.
java.awt.Shape	getLegendLine() Returns the shape used to represent a line in the legend.
java.awt.Paint	getNegativePaint() Returns the paint used to highlight negative differences.
int	getPassCount() Returns 2, the number of passes required by the renderer.
java.awt.Paint	getPositivePaint() Returns the paint used to highlight positive differences.
boolean	getRoundXCoordinates() Returns the flag that controls whether or not the x-coordinates (in Java2D space) are rounded to integer values.
boolean	getShapesVisible() Returns a flag that controls whether or not shapes are drawn for each data value.
XYItemRendererState	initialise(java.awt.Graphics2D g2, java.awt.geom.Rectangle2D dataArea, XYPlot plot, XYDataset data, PlotRenderingInfo info) Initialises the renderer and returns a state object that should be passed to subsequent calls to the drawItem() method.
private boolean	isEitherSeriesDegenerate(XYDataset x_dataset, boolean x_impliedZeroSubtrahend) Determines if a dataset is degenerate.
private void	readObject(java.io.ObjectInputStream stream) Provides serialization support.
void	setLegendLine(java.awt.Shape line) Sets the shape used as a line in each legend item and sends a RendererChangeEvent to all registered listeners.
void	setNegativePaint(java.awt.Paint paint) Sets the paint used to highlight negative differences.
void	setPositivePaint(java.awt.Paint paint) Sets the paint used to highlight positive differences and sends a RendererChangeEvent to all registered listeners.
void	setRoundXCoordinates(boolean round) Sets the flag that controls whether or not the x-coordinates (in Java2D space) are rounded to integer values, and sends a RendererChangeEvent to all registered listeners.
void	setShapesVisible(boolean flag) Sets a flag that controls whether or not shapes are drawn for each data value, and sends a RendererChangeEvent to all registered listeners.
private void	writeObject(java.io.ObjectOutputStream stream) Provides serialization support.

Methods inherited from class org.jfree.chart.renderer.xy.AbstractXYItemRenderer

addAnnotation, addAnnotation, addEntity, annotationChanged, calculateDomainMarkerTextAnchorPoint, drawAnnotations, drawDomainGridLine, drawDomainLine, drawDomainMarker, drawItemLabel, drawRangeLine, drawRangeMarker, fillDomainGridBand, fillRangeGridBand, findDomainBounds, findDomainBounds, findRangeBounds, findRangeBounds, getAnnotations, getBaseItemLabelGenerator, getBaseToolTipGenerator, getDrawingSupplier, getItemLabelGenerator, getItemLabelGenerator, getLegendItemLabelGenerator, getLegendItems, getLegendItemToolTipGenerator, getLegendItemURLGenerator, getPlot, getSeriesItemLabelGenerator, getSeriesToolTipGenerator, getToolTipGenerator, getToolTipGenerator, getURLGenerator, isPointInRect, lineTo, moveTo, removeAnnotation, removeAnnotations, setBaseItemLabelGenerator, setBaseToolTipGenerator, setItemLabelGenerator, setLegendItemLabelGenerator, setLegendItemToolTipGenerator, setLegendItemURLGenerator, setPlot, setSeriesItemLabelGenerator, setSeriesToolTipGenerator, setToolTipGenerator, setURLGenerator, updateCrosshairValues, updateCrosshairValues

Methods inherited from class org.jfree.chart.renderer.AbstractRenderer

addChangeListener, calculateLabelAnchorPoint, clearSeriesPaints, clearSeriesStrokes, fireChangeEvent, getAutoPopulateSeriesFillPaint, getAutoPopulateSeriesOutlinePaint, getAutoPopulateSeriesOutlineStroke, getAutoPopulateSeriesPaint, getAutoPopulateSeriesShape, getAutoPopulateSeriesStroke, getBaseCreateEntities, getBaseFillPaint, getBaseItemLabelFont, getBaseItemLabelPaint, getBaseItemLabelsVisible, getBaseLegendShape, getBaseLegendTextFont, getBaseLegendTextPaint, getBaseNegativeItemLabelPosition, getBaseOutlinePaint, getBaseOutlineStroke, getBasePaint, getBasePositiveItemLabelPosition, getBaseSeriesVisible, getBaseSeriesVisibleInLegend, getBaseShape, getBaseStroke, getCreateEntities, getDataBoundsIncludesVisibleSeriesOnly, getDefaultEntityRadius, getItemCreateEntity, getItemFillPaint, getItemLabelAnchorOffset, getItemLabelFont, getItemLabelFont, getItemLabelPaint, getItemLabelPaint, getItemOutlinePaint, getItemOutlineStroke, getItemPaint, getItemShape, getItemStroke, getItemVisible, getLegendShape, getLegendTextFont, getLegendTextPaint, getNegativeItemLabelPosition, getNegativeItemLabelPosition, getPositiveItemLabelPosition, getPositiveItemLabelPosition, getSeriesCreateEntities, getSeriesFillPaint, getSeriesItemLabelFont, getSeriesItemLabelPaint, getSeriesNegativeItemLabelPosition, getSeriesOutlinePaint, getSeriesOutlineStroke, getSeriesPaint, getSeriesPositiveItemLabelPosition, getSeriesShape, getSeriesStroke, getSeriesVisible, getSeriesVisible, getSeriesVisibleInLegend, getSeriesVisibleInLegend, getTreatLegendShapeAsLine, hashCode, hasListener, isItemLabelVisible, isSeriesItemLabelsVisible, isSeriesVisible, isSeriesVisibleInLegend, lookupLegendShape, lookupLegendTextFont, lookupLegendTextPaint, lookupSeriesFillPaint, lookupSeriesOutlinePaint, lookupSeriesOutlineStroke, lookupSeriesPaint, lookupSeriesShape, lookupSeriesStroke, notifyListeners, removeChangeListener, setAutoPopulateSeriesFillPaint, setAutoPopulateSeriesOutlinePaint, setAutoPopulateSeriesOutlineStroke, setAutoPopulateSeriesPaint, setAutoPopulateSeriesShape, setAutoPopulateSeriesStroke, setBaseCreateEntities, setBaseCreateEntities, setBaseFillPaint, setBaseFillPaint, setBaseItemLabelFont, setBaseItemLabelFont, setBaseItemLabelPaint, setBaseItemLabelPaint, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseLegendShape, setBaseLegendTextFont, setBaseLegendTextPaint, setBaseNegativeItemLabelPosition, setBaseNegativeItemLabelPosition, setBaseOutlinePaint, setBaseOutlinePaint, setBaseOutlineStroke, setBaseOutlineStroke, setBasePaint, setBasePaint, setBasePositiveItemLabelPosition, setBasePositiveItemLabelPosition, setBaseSeriesVisible, setBaseSeriesVisible, setBaseSeriesVisibleInLegend, setBaseSeriesVisibleInLegend, setBaseShape, setBaseShape, setBaseStroke, setBaseStroke, setCreateEntities, setCreateEntities, setDataBoundsIncludesVisibleSeriesOnly, setDefaultEntityRadius, setFillPaint, setFillPaint, setItemLabelAnchorOffset, setItemLabelFont, setItemLabelFont, setItemLabelPaint, setItemLabelPaint, setItemLabelsVisible, setItemLabelsVisible, setItemLabelsVisible, setLegendShape, setLegendTextFont, setLegendTextPaint, setNegativeItemLabelPosition, setNegativeItemLabelPosition, setOutlinePaint, setOutlinePaint, setOutlineStroke, setOutlineStroke, setPaint, setPaint, setPositiveItemLabelPosition, setPositiveItemLabelPosition, setSeriesCreateEntities, setSeriesCreateEntities, setSeriesFillPaint, setSeriesFillPaint, setSeriesItemLabelFont, setSeriesItemLabelFont, setSeriesItemLabelPaint, setSeriesItemLabelPaint, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesNegativeItemLabelPosition, setSeriesNegativeItemLabelPosition, setSeriesOutlinePaint, setSeriesOutlinePaint, setSeriesOutlineStroke, setSeriesOutlineStroke, setSeriesPaint, setSeriesPaint, setSeriesPositiveItemLabelPosition, setSeriesPositiveItemLabelPosition, setSeriesShape, setSeriesShape, setSeriesStroke, setSeriesStroke, setSeriesVisible, setSeriesVisible, setSeriesVisible, setSeriesVisible, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setShape, setShape, setStroke, setStroke, setTreatLegendShapeAsLine

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jfree.chart.renderer.xy.XYItemRenderer

addAnnotation, addAnnotation, addChangeListener, drawAnnotations, drawDomainGridLine, drawDomainMarker, drawRangeLine, drawRangeMarker, fillDomainGridBand, fillRangeGridBand, findDomainBounds, findRangeBounds, getBaseItemLabelFont, getBaseItemLabelGenerator, getBaseItemLabelPaint, getBaseItemLabelsVisible, getBaseNegativeItemLabelPosition, getBaseOutlinePaint, getBaseOutlineStroke, getBasePaint, getBasePositiveItemLabelPosition, getBaseSeriesVisible, getBaseSeriesVisibleInLegend, getBaseShape, getBaseStroke, getBaseToolTipGenerator, getItemLabelFont, getItemLabelFont, getItemLabelGenerator, getItemLabelPaint, getItemLabelPaint, getItemOutlinePaint, getItemOutlineStroke, getItemPaint, getItemShape, getItemStroke, getItemVisible, getLegendItemLabelGenerator, getNegativeItemLabelPosition, getNegativeItemLabelPosition, getPlot, getPositiveItemLabelPosition, getPositiveItemLabelPosition, getSeriesItemLabelFont, getSeriesItemLabelGenerator, getSeriesItemLabelPaint, getSeriesNegativeItemLabelPosition, getSeriesOutlinePaint, getSeriesOutlineStroke, getSeriesPaint, getSeriesPositiveItemLabelPosition, getSeriesShape, getSeriesStroke, getSeriesToolTipGenerator, getSeriesVisible, getSeriesVisible, getSeriesVisibleInLegend, getSeriesVisibleInLegend, getToolTipGenerator, getURLGenerator, isItemLabelVisible, isSeriesItemLabelsVisible, isSeriesVisible, isSeriesVisibleInLegend, removeAnnotation, removeAnnotations, removeChangeListener, setBaseItemLabelFont, setBaseItemLabelGenerator, setBaseItemLabelPaint, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseNegativeItemLabelPosition, setBaseNegativeItemLabelPosition, setBaseOutlinePaint, setBaseOutlineStroke, setBasePaint, setBasePositiveItemLabelPosition, setBasePositiveItemLabelPosition, setBaseSeriesVisible, setBaseSeriesVisible, setBaseSeriesVisibleInLegend, setBaseSeriesVisibleInLegend, setBaseShape, setBaseStroke, setBaseToolTipGenerator, setItemLabelFont, setItemLabelGenerator, setItemLabelPaint, setItemLabelsVisible, setItemLabelsVisible, setItemLabelsVisible, setLegendItemLabelGenerator, setNegativeItemLabelPosition, setNegativeItemLabelPosition, setOutlinePaint, setOutlineStroke, setPaint, setPlot, setPositiveItemLabelPosition, setPositiveItemLabelPosition, setSeriesItemLabelFont, setSeriesItemLabelGenerator, setSeriesItemLabelPaint, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesNegativeItemLabelPosition, setSeriesNegativeItemLabelPosition, setSeriesOutlinePaint, setSeriesOutlineStroke, setSeriesPaint, setSeriesPositiveItemLabelPosition, setSeriesPositiveItemLabelPosition, setSeriesShape, setSeriesStroke, setSeriesToolTipGenerator, setSeriesVisible, setSeriesVisible, setSeriesVisible, setSeriesVisible, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setShape, setStroke, setToolTipGenerator, setURLGenerator

Methods inherited from interface org.jfree.chart.LegendItemSource

getLegendItems

Field Detail

serialVersionUID

private static final long serialVersionUID

For serialization.

See Also:

Constant Field Values

positivePaint

private transient java.awt.Paint positivePaint

The paint used to highlight positive differences (y(0) > y(1)).

negativePaint

private transient java.awt.Paint negativePaint

The paint used to highlight negative differences (y(0) < y(1)).

shapesVisible

private boolean shapesVisible

Display shapes at each point?

legendLine

private transient java.awt.Shape legendLine

The shape to display in the legend item.

roundXCoordinates

private boolean roundXCoordinates

This flag controls whether or not the x-coordinates (in Java2D space) are rounded to integers. When set to true, this can avoid the vertical striping that anti-aliasing can generate. However, the rounding may not be appropriate for output in high resolution formats (for example, vector graphics formats such as SVG and PDF).

Since:

1.0.4

Constructor Detail

XYDifferenceRenderer

public XYDifferenceRenderer()

Creates a new renderer with default attributes.

XYDifferenceRenderer

public XYDifferenceRenderer(java.awt.Paint positivePaint,
                            java.awt.Paint negativePaint,
                            boolean shapes)

Creates a new renderer.

Parameters:

positivePaint - the highlight color for positive differences (null not permitted).

negativePaint - the highlight color for negative differences (null not permitted).

shapes - draw shapes?

Method Detail

getPositivePaint

public java.awt.Paint getPositivePaint()

Returns the paint used to highlight positive differences.

Returns:

The paint (never null).

See Also:

setPositivePaint(Paint)

setPositivePaint

public void setPositivePaint(java.awt.Paint paint)

Sets the paint used to highlight positive differences and sends a RendererChangeEvent to all registered listeners.

Parameters:

paint - the paint (null not permitted).

See Also:

getPositivePaint()

getNegativePaint

public java.awt.Paint getNegativePaint()

Returns the paint used to highlight negative differences.

Returns:

The paint (never null).

See Also:

setNegativePaint(Paint)

setNegativePaint

public void setNegativePaint(java.awt.Paint paint)

Sets the paint used to highlight negative differences.

Parameters:

paint - the paint (null not permitted).

See Also:

getNegativePaint()

getShapesVisible

public boolean getShapesVisible()

Returns a flag that controls whether or not shapes are drawn for each data value.

Returns:

A boolean.

See Also:

setShapesVisible(boolean)

setShapesVisible

public void setShapesVisible(boolean flag)

Sets a flag that controls whether or not shapes are drawn for each data value, and sends a RendererChangeEvent to all registered listeners.

Parameters:

flag - the flag.

See Also:

getShapesVisible()

getLegendLine

public java.awt.Shape getLegendLine()

Returns the shape used to represent a line in the legend.

Returns:

The legend line (never null).

See Also:

setLegendLine(Shape)

setLegendLine

public void setLegendLine(java.awt.Shape line)

Sets the shape used as a line in each legend item and sends a RendererChangeEvent to all registered listeners.

Parameters:

line - the line (null not permitted).

See Also:

getLegendLine()

getRoundXCoordinates

public boolean getRoundXCoordinates()

Returns the flag that controls whether or not the x-coordinates (in Java2D space) are rounded to integer values.

Returns:

The flag.

Since:

1.0.4

See Also:

setRoundXCoordinates(boolean)

setRoundXCoordinates

public void setRoundXCoordinates(boolean round)

Sets the flag that controls whether or not the x-coordinates (in Java2D space) are rounded to integer values, and sends a RendererChangeEvent to all registered listeners.

Parameters:

round - the new flag value.

Since:

1.0.4

See Also:

getRoundXCoordinates()

initialise

public XYItemRendererState initialise(java.awt.Graphics2D g2,
                                      java.awt.geom.Rectangle2D dataArea,
                                      XYPlot plot,
                                      XYDataset data,
                                      PlotRenderingInfo info)

Initialises the renderer and returns a state object that should be passed to subsequent calls to the drawItem() method. This method will be called before the first item is rendered, giving the renderer an opportunity to initialise any state information it wants to maintain. The renderer can do nothing if it chooses.

Specified by:

initialise in interface XYItemRenderer

Overrides:

initialise in class AbstractXYItemRenderer

Parameters:

g2 - the graphics device.

dataArea - the area inside the axes.

plot - the plot.

data - the data.

info - an optional info collection object to return data back to the caller.

Returns:

A state object.

getPassCount

public int getPassCount()

Returns 2, the number of passes required by the renderer. The XYPlot will run through the dataset this number of times.

Specified by:

getPassCount in interface XYItemRenderer

Overrides:

getPassCount in class AbstractXYItemRenderer

Returns:

The number of passes required by the renderer.

drawItem

public void drawItem(java.awt.Graphics2D g2,
                     XYItemRendererState state,
                     java.awt.geom.Rectangle2D dataArea,
                     PlotRenderingInfo info,
                     XYPlot plot,
                     ValueAxis domainAxis,
                     ValueAxis rangeAxis,
                     XYDataset dataset,
                     int series,
                     int item,
                     CrosshairState crosshairState,
                     int pass)

Draws the visual representation of a single data item.

Specified by:

drawItem in interface XYItemRenderer

Parameters:

g2 - the graphics device.

state - the renderer state.

dataArea - the area within which the data is being drawn.

info - collects information about the drawing.

plot - the plot (can be used to obtain standard color information etc).

domainAxis - the domain (horizontal) axis.

rangeAxis - the range (vertical) axis.

dataset - the dataset.

series - the series index (zero-based).

item - the item index (zero-based).

crosshairState - crosshair information for the plot (null permitted).

pass - the pass index.

drawItemPass0

protected void drawItemPass0(java.awt.Graphics2D x_graphics,
                             java.awt.geom.Rectangle2D x_dataArea,
                             PlotRenderingInfo x_info,
                             XYPlot x_plot,
                             ValueAxis x_domainAxis,
                             ValueAxis x_rangeAxis,
                             XYDataset x_dataset,
                             int x_series,
                             int x_item,
                             CrosshairState x_crosshairState)

Draws the visual representation of a single data item, first pass.

Parameters:

x_graphics - the graphics device.

x_dataArea - the area within which the data is being drawn.

x_info - collects information about the drawing.

x_plot - the plot (can be used to obtain standard color information etc).

x_domainAxis - the domain (horizontal) axis.

x_rangeAxis - the range (vertical) axis.

x_dataset - the dataset.

x_series - the series index (zero-based).

x_item - the item index (zero-based).

x_crosshairState - crosshair information for the plot (null permitted).

drawItemPass1

protected void drawItemPass1(java.awt.Graphics2D x_graphics,
                             java.awt.geom.Rectangle2D x_dataArea,
                             PlotRenderingInfo x_info,
                             XYPlot x_plot,
                             ValueAxis x_domainAxis,
                             ValueAxis x_rangeAxis,
                             XYDataset x_dataset,
                             int x_series,
                             int x_item,
                             CrosshairState x_crosshairState)

Draws the visual representation of a single data item, second pass. In the second pass, the renderer draws the lines and shapes for the individual points in the two series.

Parameters:

x_graphics - the graphics device.

x_dataArea - the area within which the data is being drawn.

x_info - collects information about the drawing.

x_plot - the plot (can be used to obtain standard color information etc).

x_domainAxis - the domain (horizontal) axis.

x_rangeAxis - the range (vertical) axis.

x_dataset - the dataset.

x_series - the series index (zero-based).

x_item - the item index (zero-based).

x_crosshairState - crosshair information for the plot (null permitted).

isEitherSeriesDegenerate

private boolean isEitherSeriesDegenerate(XYDataset x_dataset,
                                         boolean x_impliedZeroSubtrahend)

Determines if a dataset is degenerate. A degenerate dataset is a dataset where either series has less than two (2) points.

Parameters:

x_dataset - the dataset.

x_impliedZeroSubtrahend - if false, do not check the subtrahend

Returns:

true if the dataset is degenerate.

areSeriesDisjoint

private boolean areSeriesDisjoint(XYDataset x_dataset)

Determines if the two (2) series are disjoint. Disjoint series do not overlap in the domain space.

Parameters:

x_dataset - the dataset.

Returns:

true if the dataset is degenerate.

createPolygon

private void createPolygon(java.awt.Graphics2D x_graphics,
                           java.awt.geom.Rectangle2D x_dataArea,
                           XYPlot x_plot,
                           ValueAxis x_domainAxis,
                           ValueAxis x_rangeAxis,
                           boolean x_positive,
                           java.util.LinkedList x_xValues,
                           java.util.LinkedList x_yValues)

Draws the visual representation of a polygon

Parameters:

x_graphics - the graphics device.

x_dataArea - the area within which the data is being drawn.

x_plot - the plot (can be used to obtain standard color information etc).

x_domainAxis - the domain (horizontal) axis.

x_rangeAxis - the range (vertical) axis.

x_positive - indicates if the polygon is positive (true) or negative (false).

x_xValues - a linked list of the x values (expects values to be of type Double).

x_yValues - a linked list of the y values (expects values to be of type Double).

getLegendItem

public LegendItem getLegendItem(int datasetIndex,
                                int series)

Returns a default legend item for the specified series. Subclasses should override this method to generate customised items.

Specified by:

getLegendItem in interface XYItemRenderer

Overrides:

getLegendItem in class AbstractXYItemRenderer

Parameters:

datasetIndex - the dataset index (zero-based).

series - the series index (zero-based).

Returns:

A legend item for the series.

equals

public boolean equals(java.lang.Object obj)

Tests this renderer for equality with an arbitrary object.

Overrides:

equals in class AbstractXYItemRenderer

Parameters:

obj - the object (null permitted).

Returns:

A boolean.

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

Returns a clone of the renderer.

Specified by:

clone in interface org.jfree.util.PublicCloneable

Overrides:

clone in class AbstractXYItemRenderer

Returns:

A clone.

Throws:

java.lang.CloneNotSupportedException - if the renderer cannot be cloned.

writeObject

private void writeObject(java.io.ObjectOutputStream stream)
                  throws java.io.IOException

Provides serialization support.

Parameters:

stream - the output stream.

Throws:

java.io.IOException - if there is an I/O error.

readObject

private void readObject(java.io.ObjectInputStream stream)
                 throws java.io.IOException,
                        java.lang.ClassNotFoundException

Provides serialization support.

Parameters:

stream - the input stream.

Throws:

java.io.IOException - if there is an I/O error.

java.lang.ClassNotFoundException - if there is a classpath problem.