JSci.awt
Class Graph2D

java.lang.Object
  java.awt.Component
      java.awt.Canvas
          JSci.awt.DoubleBufferedCanvas
              JSci.awt.Graph2D

All Implemented Interfaces:

java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, java.util.EventListener, javax.accessibility.Accessible, GraphDataListener

Direct Known Subclasses:

LineGraph, ScatterGraph

public abstract class Graph2D
extends DoubleBufferedCanvas
implements GraphDataListener

The Graph2D superclass provides an abstract encapsulation of 2D graphs. There is some support for the handling of NaN values.

See Also:

Serialized Form

Nested Class Summary

static interface

Graph2D.DataMarker

Nested classes/interfaces inherited from class java.awt.Canvas

java.awt.Canvas.AccessibleAWTCanvas

Nested classes/interfaces inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent, java.awt.Component.BaselineResizeBehavior, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

Field Summary

protected int	axisPad
protected Graph2D.DataMarker	dataMarker
protected boolean	gridLines
protected int	leftAxisPad
static int	LINEAR_SCALE
static int	LOG_SCALE
protected Graph2DModel	model Data model.
protected java.awt.Point	origin Origin.
protected int	scalePad Padding.
protected java.awt.Color[]	seriesColor Series colors.
protected boolean	xAxisLine
protected java.text.NumberFormat	xNumberFormat
protected boolean	xNumbering Axis numbering.
protected boolean	yAxisLine
protected java.text.NumberFormat	yNumberFormat
protected boolean	yNumbering Axis numbering.

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

Graph2D(Graph2DModel gm)
Constructs a 2D graph.

Method Summary

void	addNotify()
void	dataChanged(GraphDataEvent e) Implementation of GraphDataListener.
protected java.awt.Point	dataToScreen(float x, float y) Converts a data point to screen coordinates.
protected void	drawAxes(java.awt.Graphics g) Draws the graph axes.
protected void	drawData(java.awt.Graphics g) Draws the graph data.
protected void	drawXLabel(java.awt.Graphics g, double x, java.awt.Point p)
protected void	drawYLabel(java.awt.Graphics g, double y, java.awt.Point p)
java.awt.Color	getColor(int n) Gets the color of the nth y-series.
java.awt.geom.Rectangle2D.Float	getExtrema() Returns the bounding box for the axis extrema.
java.awt.Dimension	getMinimumSize() Returns the minimum size of this component.
Graph2DModel	getModel() Returns the model used by this graph.
java.awt.Dimension	getPreferredSize() Returns the preferred size of this component.
float	getXIncrement() Returns the x-axis numbering increment.
float	getXMaximum()
float	getXMinimum()
float	getYIncrement() Returns the y-axis numbering increment.
float	getYMaximum()
float	getYMinimum()
protected void	offscreenPaint(java.awt.Graphics g) Paints the graph (draws the graph axes and data).
protected void	rescale() Rescales this graph.
protected java.awt.Point	scaledDataToScreen(float x, float y) Converts a scaled data point to screen coordinates.
protected java.awt.geom.Point2D.Float	screenToData(java.awt.Point p) Converts a screen point to data coordinates.
void	setAxisLines(boolean xFlag, boolean yFlag) Turns the axis lines on/off.
void	setBounds(int x, int y, int width, int height) Reshapes this graph to the specified bounding box.
void	setColor(int n, java.awt.Color c) Sets the color of the nth y-series.
void	setGridLines(boolean flag) Turns grid lines on/off.
void	setMarker(Graph2D.DataMarker marker) Sets the data marker used to draw data points.
void	setModel(Graph2DModel gm) Sets the data plotted by this graph to the specified data.
void	setNumberFormat(java.text.NumberFormat format) Sets the display format used for axis numbering.
void	setNumbering(boolean flag) Turns axis numbering on/off.
void	setNumbering(boolean xFlag, boolean yFlag)
void	setXExtrema(float min, float max) Sets the minimum/maximum values on the x-axis.
void	setXExtrema(float min, float max, float growth)
void	setXIncrement(float dx) Sets the x-axis numbering increment.
void	setXNumberFormat(java.text.NumberFormat format) Sets the display format used for x-axis numbering.
void	setXScale(int t) Sets the x-axis scale type.
void	setYExtrema(float min, float max) Sets the minimum/maximum values on the y-axis.
void	setYExtrema(float min, float max, float growth)
void	setYIncrement(float dy) Sets the y-axis numbering increment.
void	setYNumberFormat(java.text.NumberFormat format) Sets the display format used for y-axis numbering.
void	setYScale(int t) Sets the y-axis scale type.

Methods inherited from class JSci.awt.DoubleBufferedCanvas

getOffscreenGraphics, paint, print, redraw, update

Methods inherited from class java.awt.Canvas

createBufferStrategy, createBufferStrategy, getAccessibleContext, getBufferStrategy

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getAlignmentX, getAlignmentY, getBackground, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeys, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMaximumSize, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusCycleRoot, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, paramString, postEvent, preferredSize, prepareImage, prepareImage, printAll, processComponentEvent, processEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeys, setFocusTraversalKeysEnabled, setFont, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle, validate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

LINEAR_SCALE

public static final int LINEAR_SCALE

See Also:

Constant Field Values

LOG_SCALE

public static final int LOG_SCALE

See Also:

Constant Field Values

model

protected Graph2DModel model

Data model.

origin

protected java.awt.Point origin

Origin.

dataMarker

protected Graph2D.DataMarker dataMarker

seriesColor

protected java.awt.Color[] seriesColor

Series colors.

xNumbering

protected boolean xNumbering

Axis numbering.

yNumbering

protected boolean yNumbering

Axis numbering.

xNumberFormat

protected java.text.NumberFormat xNumberFormat

yNumberFormat

protected java.text.NumberFormat yNumberFormat

xAxisLine

protected boolean xAxisLine

yAxisLine

protected boolean yAxisLine

gridLines

protected boolean gridLines

scalePad

protected final int scalePad

Padding.

See Also:

Constant Field Values

axisPad

protected final int axisPad

See Also:

Constant Field Values

leftAxisPad

protected int leftAxisPad

Constructor Detail

Graph2D

public Graph2D(Graph2DModel gm)

Constructs a 2D graph.

Method Detail

setModel

public final void setModel(Graph2DModel gm)

Sets the data plotted by this graph to the specified data.

getModel

public final Graph2DModel getModel()

Returns the model used by this graph.

dataChanged

public void dataChanged(GraphDataEvent e)

Implementation of GraphDataListener. Supports incremental updates. Application code will not use this method explicitly, it is used internally.

Specified by:

dataChanged in interface GraphDataListener

setNumbering

public final void setNumbering(boolean flag)

Turns axis numbering on/off. Default is on.

setNumbering

public final void setNumbering(boolean xFlag,
                               boolean yFlag)

addNotify

public void addNotify()

Overrides:

addNotify in class java.awt.Canvas

setNumberFormat

public final void setNumberFormat(java.text.NumberFormat format)

Sets the display format used for axis numbering. Convenience method.

See Also:

setXNumberFormat(NumberFormat), setYNumberFormat(NumberFormat)

setXNumberFormat

public final void setXNumberFormat(java.text.NumberFormat format)

Sets the display format used for x-axis numbering.

setYNumberFormat

public final void setYNumberFormat(java.text.NumberFormat format)

Sets the display format used for y-axis numbering.

setAxisLines

public final void setAxisLines(boolean xFlag,
                               boolean yFlag)

Turns the axis lines on/off.

setGridLines

public final void setGridLines(boolean flag)

Turns grid lines on/off. Default is off.

setXScale

public final void setXScale(int t)

Sets the x-axis scale type.

Parameters:

t - a _SCALE constant.

setYScale

public final void setYScale(int t)

Sets the y-axis scale type.

Parameters:

t - a _SCALE constant.

setXIncrement

public final void setXIncrement(float dx)

Sets the x-axis numbering increment.

Parameters:

dx - use 0.0f for auto-adjusting (default).

getXIncrement

public final float getXIncrement()

Returns the x-axis numbering increment.

setYIncrement

public final void setYIncrement(float dy)

Sets the y-axis numbering increment.

Parameters:

dy - use 0.0f for auto-adjusting (default).

getYIncrement

public final float getYIncrement()

Returns the y-axis numbering increment.

setXExtrema

public final void setXExtrema(float min,
                              float max)

Sets the minimum/maximum values on the x-axis. Set both min and max to 0.0f for auto-adjusting (default).

setXExtrema

public final void setXExtrema(float min,
                              float max,
                              float growth)

Parameters:

growth - amount to extend the x-axis by, when data exceeds the extrema.

getXMinimum

public final float getXMinimum()

getXMaximum

public final float getXMaximum()

setYExtrema

public final void setYExtrema(float min,
                              float max)

Sets the minimum/maximum values on the y-axis. Set both min and max to 0.0f for auto-adjusting (default).

setYExtrema

public final void setYExtrema(float min,
                              float max,
                              float growth)

Parameters:

growth - amount to extend the y-axis by, when data exceeds the extrema.

getYMinimum

public final float getYMinimum()

getYMaximum

public final float getYMaximum()

getExtrema

public final java.awt.geom.Rectangle2D.Float getExtrema()

Returns the bounding box for the axis extrema.

setMarker

public final void setMarker(Graph2D.DataMarker marker)

Sets the data marker used to draw data points.

setColor

public final void setColor(int n,
                           java.awt.Color c)

Sets the color of the nth y-series.

Parameters:

n - the index of the y-series.

c - the line color.

getColor

public final java.awt.Color getColor(int n)

Gets the color of the nth y-series.

Parameters:

n - the index of the y-series.

setBounds

public final void setBounds(int x,
                            int y,
                            int width,
                            int height)

Reshapes this graph to the specified bounding box.

Overrides:

setBounds in class java.awt.Component

getPreferredSize

public java.awt.Dimension getPreferredSize()

Returns the preferred size of this component.

Overrides:

getPreferredSize in class java.awt.Component

getMinimumSize

public java.awt.Dimension getMinimumSize()

Returns the minimum size of this component.

Overrides:

getMinimumSize in class java.awt.Component

rescale

protected final void rescale()

Rescales this graph.

dataToScreen

protected final java.awt.Point dataToScreen(float x,
                                            float y)

Converts a data point to screen coordinates.

scaledDataToScreen

protected final java.awt.Point scaledDataToScreen(float x,
                                                  float y)

Converts a scaled data point to screen coordinates.

screenToData

protected final java.awt.geom.Point2D.Float screenToData(java.awt.Point p)

Converts a screen point to data coordinates.

drawAxes

protected final void drawAxes(java.awt.Graphics g)

Draws the graph axes.

drawXLabel

protected void drawXLabel(java.awt.Graphics g,
                          double x,
                          java.awt.Point p)

drawYLabel

protected void drawYLabel(java.awt.Graphics g,
                          double y,
                          java.awt.Point p)

drawData

protected void drawData(java.awt.Graphics g)

Draws the graph data. Override this method to change how the graph data is plotted.

offscreenPaint

protected void offscreenPaint(java.awt.Graphics g)

Paints the graph (draws the graph axes and data).

Specified by:

offscreenPaint in class DoubleBufferedCanvas