public abstract class

ValueAxis

extends Axis
implements Serializable Cloneable
java.lang.Object
   ↳ org.jfree.chart.axis.Axis
     ↳ org.jfree.chart.axis.ValueAxis
Known Direct Subclasses
Known Indirect Subclasses

Class Overview

The base class for axes that display value data, where values are measured using the double primitive. The two key subclasses are DateAxis and NumberAxis.

Summary

Constants
boolean DEFAULT_AUTO_RANGE The default auto-range value.
double DEFAULT_AUTO_RANGE_MINIMUM_SIZE The default minimum auto range.
boolean DEFAULT_AUTO_TICK_UNIT_SELECTION The default auto-tick-unit-selection value.
boolean DEFAULT_INVERTED The default inverted flag setting.
double DEFAULT_LOWER_BOUND This constant is deprecated. From 1.0.5 onwards, the axis defines a defaultRange attribute (see getDefaultAutoRange()).
double DEFAULT_LOWER_MARGIN The default value for the lower margin (0.05 = 5%).
double DEFAULT_UPPER_BOUND This constant is deprecated. From 1.0.5 onwards, the axis defines a defaultRange attribute (see getDefaultAutoRange()).
double DEFAULT_UPPER_MARGIN The default value for the upper margin (0.05 = 5%).
int MAXIMUM_TICK_COUNT The maximum tick count.
[Expand]
Inherited Constants
From class org.jfree.chart.axis.Axis
Fields
public static final Range DEFAULT_RANGE The default axis range.
[Expand]
Inherited Fields
From class org.jfree.chart.axis.Axis
Protected Constructors
ValueAxis(String label, TickUnitSource standardTickUnits)
Constructs a value axis.
Public Methods
void centerRange(double value)
Centers the axis range about the specified value and sends an AxisChangeEvent to all registered listeners.
Object clone()
Returns a clone of the object.
boolean equals(Object obj)
Tests the axis for equality with an arbitrary object.
double getAutoRangeMinimumSize()
Returns the minimum size allowed for the axis range when it is automatically calculated.
Range getDefaultAutoRange()
Returns the default auto range.
Shape getDownArrow()
Returns a shape that can be displayed as an arrow pointing downwards at the end of an axis line.
double getFixedAutoRange()
Returns the fixed auto range.
Shape getLeftArrow()
Returns a shape that can be displayed as an arrow pointing left at the end of an axis line.
double getLowerBound()
Returns the lower bound of the axis range.
double getLowerMargin()
Returns the lower margin for the axis, expressed as a percentage of the axis range.
int getMinorTickCount()
Returns the number of minor tick marks to display.
Range getRange()
Returns the range for the axis.
Shape getRightArrow()
Returns a shape that can be displayed as an arrow pointing right at the end of an axis line.
TickUnitSource getStandardTickUnits()
Returns the source for obtaining standard tick units for the axis.
Shape getUpArrow()
Returns a shape that can be displayed as an arrow pointing upwards at the end of an axis line.
double getUpperBound()
Returns the upper bound for the axis range.
double getUpperMargin()
Returns the upper margin for the axis, expressed as a percentage of the axis range.
boolean isAutoRange()
Returns the flag that controls whether or not the axis range is automatically adjusted to fit the data values.
boolean isAutoTickUnitSelection()
Returns a flag indicating whether or not the tick unit is automatically selected from a range of standard tick units.
boolean isInverted()
Returns a flag that controls the direction of values on the axis.
boolean isNegativeArrowVisible()
Returns a flag that controls whether or not the axis line has an arrow drawn that points in the negative direction for the axis.
boolean isPositiveArrowVisible()
Returns a flag that controls whether or not the axis line has an arrow drawn that points in the positive direction for the axis.
boolean isVerticalTickLabels()
Returns true if the tick labels should be rotated (to vertical), and false otherwise.
abstract double java2DToValue(double java2DValue, Rectangle2D area, RectangleEdge edge)
Converts a coordinate in Java2D space to the corresponding data value, assuming that the axis runs along one edge of the specified dataArea.
double lengthToJava2D(double length, Rectangle2D area, RectangleEdge edge)
Converts a length in data coordinates into the corresponding length in Java2D coordinates.
void pan(double percent)
Slides the axis range by the specified percentage.
AxisSpace reserveSpace(Graphics2D g2, Plot plot, Rectangle2D plotArea, RectangleEdge edge, AxisSpace space)
Returns the space required to draw the axis.
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.
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.
void resizeRange2(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.
void setAutoRange(boolean auto)
Sets a flag that determines whether or not the axis range is automatically adjusted to fit the data, and notifies registered listeners that the axis has been modified.
void setAutoRangeMinimumSize(double size)
Sets the auto range minimum size and sends an AxisChangeEvent to all registered listeners.
void setAutoRangeMinimumSize(double size, boolean notify)
Sets the minimum size allowed for the axis range when it is automatically calculated.
void setAutoTickUnitSelection(boolean flag, boolean notify)
Sets a flag indicating whether or not the tick unit is automatically selected from a range of standard tick units.
void setAutoTickUnitSelection(boolean flag)
Sets a flag indicating whether or not the tick unit is automatically selected from a range of standard tick units.
void setDefaultAutoRange(Range range)
Sets the default auto range and sends an AxisChangeEvent to all registered listeners.
void setDownArrow(Shape arrow)
Sets the shape that can be displayed as an arrow pointing downwards at the end of an axis line and sends an AxisChangeEvent to all registered listeners.
void setFixedAutoRange(double length)
Sets the fixed auto range for the axis.
void setInverted(boolean flag)
Sets a flag that controls the direction of values on the axis, and notifies registered listeners that the axis has changed.
void setLeftArrow(Shape arrow)
Sets the shape that can be displayed as an arrow pointing left at the end of an axis line and sends an AxisChangeEvent to all registered listeners.
void setLowerBound(double min)
Sets the lower bound for the axis range.
void setLowerMargin(double margin)
Sets the lower margin for the axis (as a percentage of the axis range) and sends an AxisChangeEvent to all registered listeners.
void setMinorTickCount(int count)
Sets the number of minor tick marks to display, and sends an AxisChangeEvent to all registered listeners.
void setNegativeArrowVisible(boolean visible)
Sets a flag that controls whether or not the axis lines has an arrow drawn that points in the negative direction for the axis, and sends an AxisChangeEvent to all registered listeners.
void setPositiveArrowVisible(boolean visible)
Sets a flag that controls whether or not the axis lines has an arrow drawn that points in the positive direction for the axis, and sends an AxisChangeEvent to all registered listeners.
void setRange(Range range, boolean turnOffAutoRange, boolean notify)
Sets the range for the axis, if requested, sends an AxisChangeEvent to all registered listeners.
void setRange(double lower, double upper)
Sets the axis range and sends an AxisChangeEvent to all registered listeners.
void setRange(Range range)
Sets the range attribute and sends an AxisChangeEvent to all registered listeners.
void setRangeAboutValue(double value, double length)
Sets the axis range, where the new range is 'size' in length, and centered on 'value'.
void setRangeWithMargins(Range range)
Sets the range for the axis (after first adding the current margins to the specified range) and sends an AxisChangeEvent to all registered listeners.
void setRangeWithMargins(double lower, double upper)
Sets the axis range (after first adding the current margins to the range) and sends an AxisChangeEvent to all registered listeners.
void setRangeWithMargins(Range range, boolean turnOffAutoRange, boolean notify)
Sets the range for the axis after first adding the current margins to the range and, if requested, sends an AxisChangeEvent to all registered listeners.
void setRightArrow(Shape arrow)
Sets the shape that can be displayed as an arrow pointing rightwards at the end of an axis line and sends an AxisChangeEvent to all registered listeners.
void setStandardTickUnits(TickUnitSource source)
Sets the source for obtaining standard tick units for the axis and sends an AxisChangeEvent to all registered listeners.
void setUpArrow(Shape arrow)
Sets the shape that can be displayed as an arrow pointing upwards at the end of an axis line and sends an AxisChangeEvent to all registered listeners.
void setUpperBound(double max)
Sets the upper bound for the axis range, and sends an AxisChangeEvent to all registered listeners.
void setUpperMargin(double margin)
Sets the upper margin for the axis (as a percentage of the axis range) and sends an AxisChangeEvent to all registered listeners.
void setVerticalTickLabels(boolean flag)
Sets the flag that controls whether the tick labels are displayed vertically (that is, rotated 90 degrees from horizontal).
abstract double valueToJava2D(double value, Rectangle2D area, RectangleEdge edge)
Converts a data value to a coordinate in Java2D space, assuming that the axis runs along one edge of the specified dataArea.
void zoomRange(double lowerPercent, double upperPercent)
Zooms in on the current range.
Protected Methods
abstract void autoAdjustRange()
Automatically sets the axis range to fit the range of values in the dataset.
float[] calculateAnchorPoint(ValueTick tick, double cursor, Rectangle2D dataArea, RectangleEdge edge)
Calculates the anchor point for a tick label.
void drawAxisLine(Graphics2D g2, double cursor, Rectangle2D dataArea, RectangleEdge edge)
Draws an axis line at the current cursor position and edge.
AxisState drawTickMarksAndLabels(Graphics2D g2, double cursor, Rectangle2D plotArea, Rectangle2D dataArea, RectangleEdge edge)
Draws the axis line, tick marks and tick mark labels.
double findMaximumTickLabelHeight(List ticks, Graphics2D g2, Rectangle2D drawArea, boolean vertical)
A utility method for determining the height of the tallest tick label.
double findMaximumTickLabelWidth(List ticks, Graphics2D g2, Rectangle2D drawArea, boolean vertical)
A utility method for determining the width of the widest tick label.
int getAutoTickIndex()
Returns the auto tick index.
void setAutoRange(boolean auto, boolean notify)
Sets the auto range attribute.
void setAutoTickIndex(int index)
Sets the auto tick index.
[Expand]
Inherited Methods
From class org.jfree.chart.axis.Axis
From class java.lang.Object

Constants

public static final boolean DEFAULT_AUTO_RANGE

The default auto-range value.

Constant Value: true

public static final double DEFAULT_AUTO_RANGE_MINIMUM_SIZE

The default minimum auto range.

Constant Value: 1.0E-8

public static final boolean DEFAULT_AUTO_TICK_UNIT_SELECTION

The default auto-tick-unit-selection value.

Constant Value: true

public static final boolean DEFAULT_INVERTED

The default inverted flag setting.

Constant Value: false

public static final double DEFAULT_LOWER_BOUND

This constant is deprecated.
From 1.0.5 onwards, the axis defines a defaultRange attribute (see getDefaultAutoRange()).

The default lower bound for the axis.

Constant Value: 0.0

public static final double DEFAULT_LOWER_MARGIN

The default value for the lower margin (0.05 = 5%).

Constant Value: 0.05

public static final double DEFAULT_UPPER_BOUND

This constant is deprecated.
From 1.0.5 onwards, the axis defines a defaultRange attribute (see getDefaultAutoRange()).

The default upper bound for the axis.

Constant Value: 1.0

public static final double DEFAULT_UPPER_MARGIN

The default value for the upper margin (0.05 = 5%).

Constant Value: 0.05

public static final int MAXIMUM_TICK_COUNT

The maximum tick count.

Constant Value: 500 (0x000001f4)

Fields

public static final Range DEFAULT_RANGE

The default axis range.

Protected Constructors

protected ValueAxis (String label, TickUnitSource standardTickUnits)

Constructs a value axis.

Parameters
label the axis label (null permitted).
standardTickUnits the source for standard tick units (null permitted).

Public Methods

public void centerRange (double value)

Centers the axis range about the specified value and sends an AxisChangeEvent to all registered listeners.

Parameters
value the center value.

public Object clone ()

Returns a clone of the object.

Returns
  • A clone.
Throws
CloneNotSupportedException if some component of the axis does not support cloning.

public boolean equals (Object obj)

Tests the axis for equality with an arbitrary object.

Parameters
obj the object (null permitted).
Returns
  • true or false.

public double getAutoRangeMinimumSize ()

Returns the minimum size allowed for the axis range when it is automatically calculated.

Returns
  • The minimum range.
See Also

public Range getDefaultAutoRange ()

Returns the default auto range.

Returns
  • The default auto range (never null).
See Also

public Shape getDownArrow ()

Returns a shape that can be displayed as an arrow pointing downwards at the end of an axis line.

Returns
  • A shape (never null).
See Also

public double getFixedAutoRange ()

Returns the fixed auto range.

Returns
  • The length.
See Also

public Shape getLeftArrow ()

Returns a shape that can be displayed as an arrow pointing left at the end of an axis line.

Returns
  • A shape (never null).
See Also

public double getLowerBound ()

Returns the lower bound of the axis range.

Returns
  • The lower bound.
See Also

public double getLowerMargin ()

Returns the lower margin for the axis, expressed as a percentage of the axis range. This controls the space added to the lower end of the axis when the axis range is automatically calculated (it is ignored when the axis range is set explicitly). The default value is 0.05 (five percent).

Returns
  • The lower margin.
See Also

public int getMinorTickCount ()

Returns the number of minor tick marks to display.

Returns
  • The number of minor tick marks to display.
See Also

public Range getRange ()

Returns the range for the axis.

Returns
  • The axis range (never null).
See Also

public Shape getRightArrow ()

Returns a shape that can be displayed as an arrow pointing right at the end of an axis line.

Returns
  • A shape (never null).
See Also

public TickUnitSource getStandardTickUnits ()

Returns the source for obtaining standard tick units for the axis.

Returns
  • The source (possibly null).
See Also

public Shape getUpArrow ()

Returns a shape that can be displayed as an arrow pointing upwards at the end of an axis line.

Returns
  • A shape (never null).
See Also

public double getUpperBound ()

Returns the upper bound for the axis range.

Returns
  • The upper bound.
See Also

public double getUpperMargin ()

Returns the upper margin for the axis, expressed as a percentage of the axis range. This controls the space added to the lower end of the axis when the axis range is automatically calculated (it is ignored when the axis range is set explicitly). The default value is 0.05 (five percent).

Returns
  • The upper margin.
See Also

public boolean isAutoRange ()

Returns the flag that controls whether or not the axis range is automatically adjusted to fit the data values.

Returns
  • The flag.
See Also

public boolean isAutoTickUnitSelection ()

Returns a flag indicating whether or not the tick unit is automatically selected from a range of standard tick units.

Returns
  • A flag indicating whether or not the tick unit is automatically selected.
See Also

public boolean isInverted ()

Returns a flag that controls the direction of values on the axis.

For a regular axis, values increase from left to right (for a horizontal axis) and bottom to top (for a vertical axis). When the axis is 'inverted', the values increase in the opposite direction.

Returns
  • The flag.
See Also

public boolean isNegativeArrowVisible ()

Returns a flag that controls whether or not the axis line has an arrow drawn that points in the negative direction for the axis.

Returns
  • A boolean.
See Also

public boolean isPositiveArrowVisible ()

Returns a flag that controls whether or not the axis line has an arrow drawn that points in the positive direction for the axis.

Returns
  • A boolean.
See Also

public boolean isVerticalTickLabels ()

Returns true if the tick labels should be rotated (to vertical), and false otherwise.

Returns
  • true or false.
See Also

public abstract double java2DToValue (double java2DValue, Rectangle2D area, RectangleEdge edge)

Converts a coordinate in Java2D space to the corresponding data value, assuming that the axis runs along one edge of the specified dataArea.

Parameters
java2DValue the coordinate in Java2D space.
area the area in which the data is plotted.
edge the edge along which the axis lies.
Returns
  • The data value.
See Also

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.

public void pan (double percent)

Slides the axis range by the specified percentage.

Parameters
percent the percentage.

public AxisSpace reserveSpace (Graphics2D g2, Plot plot, Rectangle2D plotArea, RectangleEdge edge, AxisSpace space)

Returns the space required to draw the axis.

Parameters
g2 the graphics device.
plot the plot that the axis belongs to.
plotArea the area within which the plot should be drawn.
edge the axis location.
space the space already reserved (for other axes).
Returns
  • The space required to draw the axis (including pre-reserved space).

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.
See Also

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.
See Also

public void resizeRange2 (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.
See Also

public void setAutoRange (boolean auto)

Sets a flag that determines whether or not the axis range is automatically adjusted to fit the data, and notifies registered listeners that the axis has been modified.

Parameters
auto the new value of the flag.
See Also

public void setAutoRangeMinimumSize (double size)

Sets the auto range minimum size and sends an AxisChangeEvent to all registered listeners.

Parameters
size the size.
See Also

public void setAutoRangeMinimumSize (double size, boolean notify)

Sets the minimum size allowed for the axis range when it is automatically calculated.

If requested, an AxisChangeEvent is forwarded to all registered listeners.

Parameters
size the new minimum.
notify notify listeners?

public void setAutoTickUnitSelection (boolean flag, boolean notify)

Sets a flag indicating whether or not the tick unit is automatically selected from a range of standard tick units.

Parameters
flag the new value of the flag.
notify notify listeners?
See Also

public void setAutoTickUnitSelection (boolean flag)

Sets a flag indicating whether or not the tick unit is automatically selected from a range of standard tick units. If the flag is changed, registered listeners are notified that the chart has changed.

Parameters
flag the new value of the flag.
See Also

public void setDefaultAutoRange (Range range)

Sets the default auto range and sends an AxisChangeEvent to all registered listeners.

Parameters
range the range (null not permitted).
See Also

public void setDownArrow (Shape arrow)

Sets the shape that can be displayed as an arrow pointing downwards at the end of an axis line and sends an AxisChangeEvent to all registered listeners.

Parameters
arrow the arrow shape (null not permitted).
See Also

public void setFixedAutoRange (double length)

Sets the fixed auto range for the axis.

Parameters
length the range length.
See Also

public void setInverted (boolean flag)

Sets a flag that controls the direction of values on the axis, and notifies registered listeners that the axis has changed.

Parameters
flag the flag.
See Also

public void setLeftArrow (Shape arrow)

Sets the shape that can be displayed as an arrow pointing left at the end of an axis line and sends an AxisChangeEvent to all registered listeners.

Parameters
arrow the arrow shape (null not permitted).
See Also

public void setLowerBound (double min)

Sets the lower bound for the axis range. An AxisChangeEvent is sent to all registered listeners.

Parameters
min the new minimum.
See Also

public void setLowerMargin (double margin)

Sets the lower margin for the axis (as a percentage of the axis range) and sends an AxisChangeEvent to all registered listeners. This margin is added only when the axis range is auto-calculated - if you set the axis range manually, the margin is ignored.

Parameters
margin the margin percentage (for example, 0.05 is five percent).
See Also

public void setMinorTickCount (int count)

Sets the number of minor tick marks to display, and sends an AxisChangeEvent to all registered listeners.

Parameters
count the count.
See Also

public void setNegativeArrowVisible (boolean visible)

Sets a flag that controls whether or not the axis lines has an arrow drawn that points in the negative direction for the axis, and sends an AxisChangeEvent to all registered listeners.

Parameters
visible the flag.
See Also

public void setPositiveArrowVisible (boolean visible)

Sets a flag that controls whether or not the axis lines has an arrow drawn that points in the positive direction for the axis, and sends an AxisChangeEvent to all registered listeners.

Parameters
visible the flag.
See Also

public void setRange (Range range, boolean turnOffAutoRange, boolean notify)

Sets the range for the axis, if requested, sends an AxisChangeEvent to all registered listeners. As a side-effect, the auto-range flag is set to false (optional).

Parameters
range the range (null not permitted).
turnOffAutoRange a flag that controls whether or not the auto range is turned off.
notify a flag that controls whether or not listeners are notified.
See Also

public void setRange (double lower, double upper)

Sets the axis range and sends an AxisChangeEvent to all registered listeners. As a side-effect, the auto-range flag is set to false.

Parameters
lower the lower axis limit.
upper the upper axis limit.
See Also

public void setRange (Range range)

Sets the range attribute and sends an AxisChangeEvent to all registered listeners. As a side-effect, the auto-range flag is set to false.

Parameters
range the range (null not permitted).
See Also

public void setRangeAboutValue (double value, double length)

Sets the axis range, where the new range is 'size' in length, and centered on 'value'.

Parameters
value the central value.
length the range length.

public void setRangeWithMargins (Range range)

Sets the range for the axis (after first adding the current margins to the specified range) and sends an AxisChangeEvent to all registered listeners.

Parameters
range the range (null not permitted).

public void setRangeWithMargins (double lower, double upper)

Sets the axis range (after first adding the current margins to the range) and sends an AxisChangeEvent to all registered listeners. As a side-effect, the auto-range flag is set to false.

Parameters
lower the lower axis limit.
upper the upper axis limit.

public void setRangeWithMargins (Range range, boolean turnOffAutoRange, boolean notify)

Sets the range for the axis after first adding the current margins to the range and, if requested, sends an AxisChangeEvent to all registered listeners. As a side-effect, the auto-range flag is set to false (optional).

Parameters
range the range (excluding margins, null not permitted).
turnOffAutoRange a flag that controls whether or not the auto range is turned off.
notify a flag that controls whether or not listeners are notified.

public void setRightArrow (Shape arrow)

Sets the shape that can be displayed as an arrow pointing rightwards at the end of an axis line and sends an AxisChangeEvent to all registered listeners.

Parameters
arrow the arrow shape (null not permitted).
See Also

public void setStandardTickUnits (TickUnitSource source)

Sets the source for obtaining standard tick units for the axis and sends an AxisChangeEvent to all registered listeners. The axis will try to select the smallest tick unit from the source that does not cause the tick labels to overlap (see also the setAutoTickUnitSelection(boolean) method.

Parameters
source the source for standard tick units (null permitted).
See Also

public void setUpArrow (Shape arrow)

Sets the shape that can be displayed as an arrow pointing upwards at the end of an axis line and sends an AxisChangeEvent to all registered listeners.

Parameters
arrow the arrow shape (null not permitted).
See Also

public void setUpperBound (double max)

Sets the upper bound for the axis range, and sends an AxisChangeEvent to all registered listeners.

Parameters
max the new maximum.
See Also

public void setUpperMargin (double margin)

Sets the upper margin for the axis (as a percentage of the axis range) and sends an AxisChangeEvent to all registered listeners. This margin is added only when the axis range is auto-calculated - if you set the axis range manually, the margin is ignored.

Parameters
margin the margin percentage (for example, 0.05 is five percent).
See Also

public void setVerticalTickLabels (boolean flag)

Sets the flag that controls whether the tick labels are displayed vertically (that is, rotated 90 degrees from horizontal). If the flag is changed, an AxisChangeEvent is sent to all registered listeners.

Parameters
flag the flag.
See Also

public abstract double valueToJava2D (double value, Rectangle2D area, RectangleEdge edge)

Converts a data value to a coordinate in Java2D space, assuming that the axis runs along one edge of the specified dataArea.

Note that it is possible for the coordinate to fall outside the area.

Parameters
value the data value.
area the area for plotting the data.
edge the edge along which the axis lies.
Returns
  • The Java2D coordinate.
See Also

public void zoomRange (double lowerPercent, double upperPercent)

Zooms in on the current range.

Parameters
lowerPercent the new lower bound.
upperPercent the new upper bound.

Protected Methods

protected abstract void autoAdjustRange ()

Automatically sets the axis range to fit the range of values in the dataset. Sometimes this can depend on the renderer used as well (for example, the renderer may "stack" values, requiring an axis range greater than otherwise necessary).

protected float[] calculateAnchorPoint (ValueTick tick, double cursor, Rectangle2D dataArea, RectangleEdge edge)

Calculates the anchor point for a tick label.

Parameters
tick the tick.
cursor the cursor.
dataArea the data area.
edge the edge on which the axis is drawn.
Returns
  • The x and y coordinates of the anchor point.

protected void drawAxisLine (Graphics2D g2, double cursor, Rectangle2D dataArea, RectangleEdge edge)

Draws an axis line at the current cursor position and edge.

Parameters
g2 the graphics device.
cursor the cursor position.
dataArea the data area.
edge the edge.

protected AxisState drawTickMarksAndLabels (Graphics2D g2, double cursor, Rectangle2D plotArea, Rectangle2D dataArea, RectangleEdge edge)

Draws the axis line, tick marks and tick mark labels.

Parameters
g2 the graphics device.
cursor the cursor.
plotArea the plot area.
dataArea the data area.
edge the edge that the axis is aligned with.
Returns
  • The width or height used to draw the axis.

protected double findMaximumTickLabelHeight (List ticks, Graphics2D g2, Rectangle2D drawArea, boolean vertical)

A utility method for determining the height of the tallest tick label.

Parameters
ticks the ticks.
g2 the graphics device.
drawArea the area within which the plot and axes should be drawn.
vertical a flag that indicates whether or not the tick labels are 'vertical'.
Returns
  • The height of the tallest tick label.

protected double findMaximumTickLabelWidth (List ticks, Graphics2D g2, Rectangle2D drawArea, boolean vertical)

A utility method for determining the width of the widest tick label.

Parameters
ticks the ticks.
g2 the graphics device.
drawArea the area within which the plot and axes should be drawn.
vertical a flag that indicates whether or not the tick labels are 'vertical'.
Returns
  • The width of the tallest tick label.

protected int getAutoTickIndex ()

Returns the auto tick index.

Returns
  • The auto tick index.
See Also

protected void setAutoRange (boolean auto, boolean notify)

Sets the auto range attribute. If the notify flag is set, an AxisChangeEvent is sent to registered listeners.

Parameters
auto the flag.
notify notify listeners?
See Also

protected void setAutoTickIndex (int index)

Sets the auto tick index.

Parameters
index the new value.
See Also