org.jfree.chart.axis

Class ModuloAxis

public class ModuloAxis extends NumberAxis

An axis that displays numerical values within a fixed range using a modulo calculation.
Constructor Summary
ModuloAxis(String label, Range fixedRange)
Creates a new axis.
Method Summary
protected voidautoAdjustRange()
This method should calculate a range that will show all the data values.
booleanequals(Object obj)
Tests this axis for equality with an arbitrary object.
doublegetDisplayEnd()
Returns the display end value.
doublegetDisplayStart()
Returns the display start value.
doublejava2DToValue(double java2DValue, Rectangle2D area, RectangleEdge edge)
Translates a Java2D coordinate into a data value.
doublelengthToJava2D(double length, Rectangle2D area, RectangleEdge edge)
Converts a length in data coordinates into the corresponding length in Java2D coordinates.
voidresizeRange(double percent)
Increases or decreases the axis range by the specified percentage about the central value and sends an AxisChangeEvent to all registered listeners.
voidresizeRange(double percent, double anchorValue)
Increases or decreases the axis range by the specified percentage about the specified anchor value and sends an AxisChangeEvent to all registered listeners.
voidsetDisplayRange(double start, double end)
Sets the display range.
doublevalueToJava2D(double value, Rectangle2D area, RectangleEdge edge)
Translates a data value to a Java2D coordinate.

Constructor Detail

ModuloAxis

public ModuloAxis(String label, Range fixedRange)
Creates a new axis.

Parameters: label the axis label (null permitted). fixedRange the fixed range (null not permitted).

Method Detail

autoAdjustRange

protected void autoAdjustRange()
This method should calculate a range that will show all the data values. For now, it just sets the axis range to the fixedRange.

equals

public boolean equals(Object obj)
Tests this axis for equality with an arbitrary object.

Parameters: obj the object (null permitted).

Returns: A boolean.

getDisplayEnd

public double getDisplayEnd()
Returns the display end value.

Returns: The display end value.

getDisplayStart

public double getDisplayStart()
Returns the display start value.

Returns: The display start value.

java2DToValue

public double java2DToValue(double java2DValue, Rectangle2D area, RectangleEdge edge)
Translates a Java2D coordinate into a data value.

Parameters: java2DValue the Java2D coordinate. area the area. edge the edge.

Returns: The Java2D coordinate.

lengthToJava2D

public double lengthToJava2D(double length, Rectangle2D area, RectangleEdge edge)
Converts a length in data coordinates into the corresponding length in Java2D coordinates.

Parameters: length the length. area the plot area. edge the edge along which the axis lies.

Returns: The length in Java2D coordinates.

resizeRange

public void resizeRange(double percent)
Increases or decreases the axis range by the specified percentage about the central value and sends an AxisChangeEvent to all registered listeners.

To double the length of the axis range, use 200% (2.0). To halve the length of the axis range, use 50% (0.5).

Parameters: percent the resize factor.

resizeRange

public void resizeRange(double percent, double anchorValue)
Increases or decreases the axis range by the specified percentage about the specified anchor value and sends an AxisChangeEvent to all registered listeners.

To double the length of the axis range, use 200% (2.0). To halve the length of the axis range, use 50% (0.5).

Parameters: percent the resize factor. anchorValue the new central value after the resize.

setDisplayRange

public void setDisplayRange(double start, double end)
Sets the display range. The values will be mapped to the fixed range if necessary.

Parameters: start the start value. end the end value.

valueToJava2D

public double valueToJava2D(double value, Rectangle2D area, RectangleEdge edge)
Translates a data value to a Java2D coordinate.

Parameters: value the value. area the area. edge the edge.

Returns: A Java2D coordinate.

Copyright © 2000-2009 by Object Refinery Limited. All Rights Reserved.