java.lang.Object
- org.jfree.chart.plot.Plot
- - org.jfree.chart.plot.dial.DialPlot

All Implemented Interfaces:

Serializable, Cloneable, EventListener, PublicCloneable, ChartElement, AnnotationChangeListener, AxisChangeListener, MarkerChangeListener, org.jfree.chart.legend.LegendItemSource, DialLayerChangeListener, DatasetChangeListener
```
public class DialPlot
extends Plot
implements DialLayerChangeListener
```
A dial plot composed of user-definable layers. The example shown here is generated by the DialDemo2.java program included in the JFreeChart Demo Collection:

See Also:

Serialized Form

Field Summary
- Fields inherited from class org.jfree.chart.plot.Plot
  DEFAULT_BACKGROUND_ALPHA, DEFAULT_BACKGROUND_PAINT, DEFAULT_FOREGROUND_ALPHA, DEFAULT_INSETS, DEFAULT_LEGEND_ITEM_BOX, DEFAULT_LEGEND_ITEM_CIRCLE, DEFAULT_OUTLINE_PAINT, DEFAULT_OUTLINE_STROKE, MINIMUM_HEIGHT_TO_DRAW, MINIMUM_WIDTH_TO_DRAW, ZERO

Constructor Summary

Constructors
Constructor Description

DialPlot()
Creates a new instance of DialPlot.

DialPlot(ValueDataset dataset)
Creates a new instance of DialPlot.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addLayer(DialLayer layer)`	Adds a layer to the plot and sends a `PlotChangeEvent` to all registered listeners.
`void`	`addPointer(DialPointer pointer)`	Adds a pointer to the plot and sends a `PlotChangeEvent` to all registered listeners.
`void`	`addScale(int index, DialScale scale)`	Adds a dial scale to the plot and sends a `PlotChangeEvent` to all registered listeners.
`void`	`dialLayerChanged(DialLayerChangeEvent event)`	Receives notification when a layer has changed, and responds by forwarding a `PlotChangeEvent` to all registered listeners.
`void`	`draw(Graphics2D g2, Rectangle2D area, Point2D anchor, PlotState parentState, PlotRenderingInfo info)`	Draws the plot.
`boolean`	`equals(Object obj)`	Tests this `DialPlot` instance for equality with an arbitrary object.
`DialLayer`	`getBackground()`	Returns the background.
`DialLayer`	`getCap()`	Returns the cap.
`ValueDataset`	`getDataset()`	Returns the primary dataset for the plot.
`ValueDataset`	`getDataset(int index)`	Returns the dataset at the given index.
`int`	`getDatasetCount()`	Returns the number of datasets.
`DialFrame`	`getDialFrame()`	Returns the dial's frame.
`int`	`getLayerIndex(DialLayer layer)`	Returns the index for the specified layer.
`String`	`getPlotType()`	Returns the plot type.
`DialPointer`	`getPointerForDataset(int datasetIndex)`	Returns the dial pointer that is associated with the specified dataset, or `null`.
`int`	`getPointerIndex(DialPointer pointer)`	Returns the index for the specified pointer.
`DialScale`	`getScale(int index)`	Returns the scale at the given index.
`DialScale`	`getScaleForDataset(int datasetIndex)`	Returns the dial scale for a specific dataset.
`double`	`getValue(int datasetIndex)`	Returns the value from the specified dataset.
`double`	`getViewHeight()`	Returns the height of the viewing rectangle.
`double`	`getViewWidth()`	Returns the width of the viewing rectangle.
`double`	`getViewX()`	Returns the x-coordinate of the viewing rectangle.
`double`	`getViewY()`	Returns the y-coordinate of the viewing rectangle.
`int`	`hashCode()`	Returns a hash code for this instance.
`void`	`mapDatasetToScale(int index, int scaleIndex)`	Maps a dataset to a particular scale.
`void`	`receive(ChartElementVisitor visitor)`	Receives a chart element visitor.
`static Rectangle2D`	`rectangleByRadius(Rectangle2D rect, double radiusW, double radiusH)`	A utility method that computes a rectangle using relative radius values.
`void`	`removeLayer(int index)`	Removes the layer at the specified index and sends a `PlotChangeEvent` to all registered listeners.
`void`	`removeLayer(DialLayer layer)`	Removes the specified layer and sends a `PlotChangeEvent` to all registered listeners.
`void`	`removePointer(int index)`	Removes the pointer at the specified index and sends a `PlotChangeEvent` to all registered listeners.
`void`	`removePointer(DialPointer pointer)`	Removes the specified pointer and sends a `PlotChangeEvent` to all registered listeners.
`void`	`setBackground(DialLayer background)`	Sets the background layer and sends a `PlotChangeEvent` to all registered listeners.
`void`	`setCap(DialLayer cap)`	Sets the cap and sends a `PlotChangeEvent` to all registered listeners.
`void`	`setDataset(int index, ValueDataset dataset)`	Sets a dataset for the plot.
`void`	`setDataset(ValueDataset dataset)`	Sets the dataset for the plot, replacing the existing dataset, if there is one, and sends a `PlotChangeEvent` to all registered listeners.
`void`	`setDialFrame(DialFrame frame)`	Sets the dial's frame and sends a `PlotChangeEvent` to all registered listeners.
`void`	`setView(double x, double y, double w, double h)`	Sets the viewing rectangle, relative to the dial's framing rectangle, and sends a `PlotChangeEvent` to all registered listeners.

Methods inherited from class org.jfree.chart.plot.Plot
addChangeListener, annotationChanged, axisChanged, clone, createAndAddEntity, datasetChanged, drawBackground, drawBackgroundImage, drawNoDataMessage, drawOutline, fetchElementHintingFlag, fillBackground, fillBackground, fireChangeEvent, getBackgroundAlpha, getBackgroundImage, getBackgroundImageAlignment, getBackgroundImageAlpha, getBackgroundPaint, getChart, getDrawingSupplier, getForegroundAlpha, getInsets, getLegendItems, getNoDataMessage, getNoDataMessageFont, getNoDataMessagePaint, getOutlinePaint, getOutlineStroke, getParent, getRectX, getRectY, getRootPlot, handleClick, isNotify, isOutlineVisible, isSubplot, markerChanged, notifyListeners, removeChangeListener, resolveDomainAxisLocation, resolveRangeAxisLocation, setBackgroundAlpha, setBackgroundImage, setBackgroundImageAlignment, setBackgroundImageAlpha, setBackgroundPaint, setChart, setDrawingSupplier, setDrawingSupplier, setForegroundAlpha, setInsets, setInsets, setNoDataMessage, setNoDataMessageFont, setNoDataMessagePaint, setNotify, setOutlinePaint, setOutlineStroke, setOutlineVisible, setParent, zoom

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

- Constructor Detail
  - DialPlot
```
public DialPlot()
```
    Creates a new instance of DialPlot.
  - DialPlot
```
public DialPlot(ValueDataset dataset)
```
    Creates a new instance of DialPlot.
    
    Parameters:
    
    dataset - the dataset (null permitted).
- Method Detail
  - getBackground
```
public DialLayer getBackground()
```
    Returns the background.
    
    Returns:
    
    The background (possibly null).
    
    See Also:
    
    setBackground(DialLayer)
  - setBackground
```
public void setBackground(DialLayer background)
```
    Sets the background layer and sends a PlotChangeEvent to all registered listeners.
    
    Parameters:
    
    background - the background layer (null permitted).
    
    See Also:
    
    getBackground()
  - getCap
```
public DialLayer getCap()
```
    Returns the cap.
    
    Returns:
    
    The cap (possibly null).
    
    See Also:
    
    setCap(DialLayer)
  - setCap
```
public void setCap(DialLayer cap)
```
    Sets the cap and sends a PlotChangeEvent to all registered listeners.
    
    Parameters:
    
    cap - the cap (null permitted).
    
    See Also:
    
    getCap()
  - getDialFrame
```
public DialFrame getDialFrame()
```
    Returns the dial's frame.
    
    Returns:
    
    The dial's frame (never null).
    
    See Also:
    
    setDialFrame(DialFrame)
  - setDialFrame
```
public void setDialFrame(DialFrame frame)
```
    Sets the dial's frame and sends a PlotChangeEvent to all registered listeners.
    
    Parameters:
    
    frame - the frame (null not permitted).
    
    See Also:
    
    getDialFrame()
  - getViewX
```
public double getViewX()
```
    Returns the x-coordinate of the viewing rectangle. This is specified in the range 0.0 to 1.0, relative to the dial's framing rectangle.
    
    Returns:
    
    The x-coordinate of the viewing rectangle.
    
    See Also:
    
    setView(double, double, double, double)
  - getViewY
```
public double getViewY()
```
    Returns the y-coordinate of the viewing rectangle. This is specified in the range 0.0 to 1.0, relative to the dial's framing rectangle.
    
    Returns:
    
    The y-coordinate of the viewing rectangle.
    
    See Also:
    
    setView(double, double, double, double)
  - getViewWidth
```
public double getViewWidth()
```
    Returns the width of the viewing rectangle. This is specified in the range 0.0 to 1.0, relative to the dial's framing rectangle.
    
    Returns:
    
    The width of the viewing rectangle.
    
    See Also:
    
    setView(double, double, double, double)
  - getViewHeight
```
public double getViewHeight()
```
    Returns the height of the viewing rectangle. This is specified in the range 0.0 to 1.0, relative to the dial's framing rectangle.
    
    Returns:
    
    The height of the viewing rectangle.
    
    See Also:
    
    setView(double, double, double, double)
  - setView
```
public void setView(double x,
                    double y,
                    double w,
                    double h)
```
    Sets the viewing rectangle, relative to the dial's framing rectangle, and sends a PlotChangeEvent to all registered listeners.
    
    Parameters:
    
    x - the x-coordinate (in the range 0.0 to 1.0).
    
    y - the y-coordinate (in the range 0.0 to 1.0).
    
    w - the width (in the range 0.0 to 1.0).
    
    h - the height (in the range 0.0 to 1.0).
    
    See Also:
    
    getViewX(), getViewY(), getViewWidth(), getViewHeight()
  - addLayer
```
public void addLayer(DialLayer layer)
```
    Adds a layer to the plot and sends a PlotChangeEvent to all registered listeners.
    
    Parameters:
    
    layer - the layer (null not permitted).
  - getLayerIndex
```
public int getLayerIndex(DialLayer layer)
```
    Returns the index for the specified layer.
    
    Parameters:
    
    layer - the layer (null not permitted).
    
    Returns:
    
    The layer index.
  - removeLayer
```
public void removeLayer(int index)
```
    Removes the layer at the specified index and sends a PlotChangeEvent to all registered listeners.
    
    Parameters:
    
    index - the index.
  - removeLayer
```
public void removeLayer(DialLayer layer)
```
    Removes the specified layer and sends a PlotChangeEvent to all registered listeners.
    
    Parameters:
    
    layer - the layer (null not permitted).
  - addPointer
```
public void addPointer(DialPointer pointer)
```
    Adds a pointer to the plot and sends a PlotChangeEvent to all registered listeners.
    
    Parameters:
    
    pointer - the pointer (null not permitted).
  - getPointerIndex
```
public int getPointerIndex(DialPointer pointer)
```
    Returns the index for the specified pointer.
    
    Parameters:
    
    pointer - the pointer (null not permitted).
    
    Returns:
    
    The pointer index.
  - removePointer
```
public void removePointer(int index)
```
    Removes the pointer at the specified index and sends a PlotChangeEvent to all registered listeners.
    
    Parameters:
    
    index - the index.
  - removePointer
```
public void removePointer(DialPointer pointer)
```
    Removes the specified pointer and sends a PlotChangeEvent to all registered listeners.
    
    Parameters:
    
    pointer - the pointer (null not permitted).
  - getPointerForDataset
```
public DialPointer getPointerForDataset(int datasetIndex)
```
    Returns the dial pointer that is associated with the specified dataset, or null.
    
    Parameters:
    
    datasetIndex - the dataset index.
    
    Returns:
    
    The pointer.
  - getDataset
```
public ValueDataset getDataset()
```
    Returns the primary dataset for the plot.
    
    Returns:
    
    The primary dataset (possibly null).
  - getDataset
```
public ValueDataset getDataset(int index)
```
    Returns the dataset at the given index.
    
    Parameters:
    
    index - the dataset index.
    
    Returns:
    
    The dataset (possibly null).
  - setDataset
```
public void setDataset(ValueDataset dataset)
```
    Sets the dataset for the plot, replacing the existing dataset, if there is one, and sends a PlotChangeEvent to all registered listeners.
    
    Parameters:
    
    dataset - the dataset (null permitted).
  - setDataset
```
public void setDataset(int index,
                       ValueDataset dataset)
```
    Sets a dataset for the plot.
    
    Parameters:
    
    index - the dataset index.
    
    dataset - the dataset (null permitted).
  - getDatasetCount
```
public int getDatasetCount()
```
    Returns the number of datasets.
    
    Returns:
    
    The number of datasets.
  - receive
```
public void receive(ChartElementVisitor visitor)
```
    Receives a chart element visitor. Many plot subclasses will override this method to handle their subcomponents.
    
    Specified by:
    
    receive in interface ChartElement
    
    Overrides:
    
    receive in class Plot
    
    Parameters:
    
    visitor - the visitor (null not permitted).
  - draw
```
public void draw(Graphics2D g2,
                 Rectangle2D area,
                 Point2D anchor,
                 PlotState parentState,
                 PlotRenderingInfo info)
```
    Draws the plot. This method is usually called by the JFreeChart instance that manages the plot.
    
    Specified by:
    
    draw in class Plot
    
    Parameters:
    
    g2 - the graphics target.
    
    area - the area in which the plot should be drawn.
    
    anchor - the anchor point (typically the last point that the mouse clicked on, null is permitted).
    
    parentState - the state for the parent plot (if any).
    
    info - used to collect plot rendering info (null permitted).
  - getValue
```
public double getValue(int datasetIndex)
```
    Returns the value from the specified dataset.
    
    Parameters:
    
    datasetIndex - the dataset index.
    
    Returns:
    
    The data value.
  - addScale
```
public void addScale(int index,
                     DialScale scale)
```
    Adds a dial scale to the plot and sends a PlotChangeEvent to all registered listeners.
    
    Parameters:
    
    index - the scale index.
    
    scale - the scale (null not permitted).
  - getScale
```
public DialScale getScale(int index)
```
    Returns the scale at the given index.
    
    Parameters:
    
    index - the scale index.
    
    Returns:
    
    The scale (possibly null).
  - mapDatasetToScale
```
public void mapDatasetToScale(int index,
                              int scaleIndex)
```
    Maps a dataset to a particular scale.
    
    Parameters:
    
    index - the dataset index (zero-based).
    
    scaleIndex - the scale index (zero-based).
  - getScaleForDataset
```
public DialScale getScaleForDataset(int datasetIndex)
```
    Returns the dial scale for a specific dataset.
    
    Parameters:
    
    datasetIndex - the dataset index.
    
    Returns:
    
    The dial scale.
  - rectangleByRadius
```
public static Rectangle2D rectangleByRadius(Rectangle2D rect,
                                            double radiusW,
                                            double radiusH)
```
    A utility method that computes a rectangle using relative radius values.
    
    Parameters:
    
    rect - the reference rectangle (null not permitted).
    
    radiusW - the width radius (must be > 0.0)
    
    radiusH - the height radius.
    
    Returns:
    
    A new rectangle.
  - dialLayerChanged
```
public void dialLayerChanged(DialLayerChangeEvent event)
```
    Receives notification when a layer has changed, and responds by forwarding a PlotChangeEvent to all registered listeners.
    
    Specified by:
    
    dialLayerChanged in interface DialLayerChangeListener
    
    Parameters:
    
    event - the event.
  - equals
```
public boolean equals(Object obj)
```
    Tests this DialPlot instance for equality with an arbitrary object. The plot's dataset(s) is (are) not included in the test.
    
    Overrides:
    
    equals in class Plot
    
    Parameters:
    
    obj - the object (null permitted).
    
    Returns:
    
    A boolean.
  - hashCode
```
public int hashCode()
```
    Returns a hash code for this instance.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    
    The hash code.
  - getPlotType
```
public String getPlotType()
```
    Returns the plot type.
    
    Specified by:
    
    getPlotType in class Plot
    
    Returns:
    
    "DialPlot"

Constructor	Description
`DialPlot()`	Creates a new instance of `DialPlot`.
`DialPlot(ValueDataset dataset)`	Creates a new instance of `DialPlot`.

Class DialPlot

Field Summary

Fields inherited from class org.jfree.chart.plot.Plot

Constructor Summary

Method Summary

Methods inherited from class org.jfree.chart.plot.Plot

Methods inherited from class java.lang.Object

Constructor Detail

DialPlot

DialPlot

Method Detail

getBackground

setBackground

getCap

setCap

getDialFrame

setDialFrame

getViewX

getViewY

getViewWidth

getViewHeight

setView

addLayer

getLayerIndex

removeLayer

removeLayer

addPointer

getPointerIndex

removePointer

removePointer

getPointerForDataset

getDataset

getDataset

setDataset

setDataset

getDatasetCount

receive

draw

getValue

addScale

getScale

mapDatasetToScale

getScaleForDataset

rectangleByRadius

dialLayerChanged

equals

hashCode

getPlotType