public class

XYStepRenderer

extends XYLineAndShapeRenderer
implements Serializable Cloneable XYItemRenderer
java.lang.Object
   ↳ org.jfree.chart.renderer.AbstractRenderer
     ↳ org.jfree.chart.renderer.xy.AbstractXYItemRenderer
       ↳ org.jfree.chart.renderer.xy.XYLineAndShapeRenderer
         ↳ org.jfree.chart.renderer.xy.XYStepRenderer

Class Overview

Line/Step item renderer for an XYPlot. This class draws lines between data points, only allowing horizontal or vertical lines (steps). The example shown here is generated by the XYStepRendererDemo1.java program included in the JFreeChart demo collection:

XYStepRendererSample.png

Summary

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Inherited Fields
From class org.jfree.chart.renderer.AbstractRenderer
Public Constructors
XYStepRenderer()
Constructs a new renderer with no tooltip or URL generation.
XYStepRenderer(XYToolTipGenerator toolTipGenerator, XYURLGenerator urlGenerator)
Constructs a new renderer with the specified tool tip and URL generators.
Public Methods
Object clone()
Returns a clone of the renderer.
void drawItem(Graphics2D g2, XYItemRendererState state, 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.
boolean equals(Object obj)
Tests this renderer for equality with an arbitrary object.
double getStepPoint()
Returns the fraction of the domain position between two points on which the step is drawn.
int hashCode()
Returns a hash code for this instance.
void setStepPoint(double stepPoint)
Sets the step point and sends a RendererChangeEvent to all registered listeners.
[Expand]
Inherited Methods
From class org.jfree.chart.renderer.xy.XYLineAndShapeRenderer
From class org.jfree.chart.renderer.xy.AbstractXYItemRenderer
From class org.jfree.chart.renderer.AbstractRenderer
From class java.lang.Object
From interface org.jfree.chart.LegendItemSource
From interface org.jfree.chart.renderer.xy.XYItemRenderer

Public Constructors

public XYStepRenderer ()

Constructs a new renderer with no tooltip or URL generation.

public XYStepRenderer (XYToolTipGenerator toolTipGenerator, XYURLGenerator urlGenerator)

Constructs a new renderer with the specified tool tip and URL generators.

Parameters
toolTipGenerator the item label generator (null permitted).
urlGenerator the URL generator (null permitted).

Public Methods

public Object clone ()

Returns a clone of the renderer.

Returns
  • A clone.
Throws
CloneNotSupportedException if the renderer cannot be cloned.

public void drawItem (Graphics2D g2, XYItemRendererState state, 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.

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 axis.
rangeAxis the 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.

public boolean equals (Object obj)

Tests this renderer for equality with an arbitrary object.

Parameters
obj the object (null permitted).
Returns
  • A boolean.

public double getStepPoint ()

Returns the fraction of the domain position between two points on which the step is drawn. The default is 1.0d, which means the step is drawn at the domain position of the second`point. If the stepPoint is 0.5d the step is drawn at half between the two points.

Returns
  • The fraction of the domain position between two points where the step is drawn.

public int hashCode ()

Returns a hash code for this instance.

Returns
  • A hash code.

public void setStepPoint (double stepPoint)

Sets the step point and sends a RendererChangeEvent to all registered listeners.

Parameters
stepPoint the step point (in the range 0.0 to 1.0)
See Also