java.lang.Object
- java.awt.Component
- - java.awt.Container
  - - javax.swing.JComponent
    - - javax.swing.JPanel
      - uk.ac.starlink.ttools.plot.PtPlotSurface

All Implemented Interfaces:

java.awt.image.ImageObserver, java.awt.MenuContainer, java.awt.print.Printable, java.io.Serializable, javax.accessibility.Accessible, PlotSurface
```
public class PtPlotSurface
extends javax.swing.JPanel
implements PlotSurface
```
PlotSurface implementation which uses Ptplot classes for axis plotting

Since:

17 Jun 2004

Author:

Mark Taylor (Starlink)

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class javax.swing.JPanel
  javax.swing.JPanel.AccessibleJPanel
- Nested classes/interfaces inherited from class javax.swing.JComponent
  javax.swing.JComponent.AccessibleJComponent
- Nested classes/interfaces inherited from class java.awt.Container
  java.awt.Container.AccessibleAWTContainer
- 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

Fields
Modifier and Type	Field	Description
`protected java.awt.Color`	`_background`
`protected int`	`_bottomPadding`
`protected static java.awt.Color[]`	`_colors`
`java.net.URL`	`_documentBase`
`protected int`	`_expThreshold`
`protected java.awt.Color`	`_foreground`
`protected boolean`	`_grid`
`protected int`	`_height`
`protected java.awt.Font`	`_labelFont`
`protected java.awt.FontMetrics`	`_labelFontMetrics`
`protected int`	`_leftPadding`
`protected static double`	`_LOG10SCALE`
`protected int`	`_lrx`	The x value of the lower right corner of the plot rectangle in pixels.
`protected int`	`_lry`	The y value of the lower right corner of the plot rectangle in pixels.
`protected double`	`_padding`	The factor we pad by so that we don't plot points on the axes.
`protected int`	`_preferredHeight`
`protected int`	`_preferredWidth`
`protected boolean`	`_rangesGivenByZooming`
`protected int`	`_rightPadding`
`protected boolean`	`_sizeHasBeenSet`
`protected java.awt.Font`	`_superscriptFont`
`protected java.awt.FontMetrics`	`_superscriptFontMetrics`
`int`	`_tickLength`	Length of tickmarks.
`protected java.awt.Font`	`_titleFont`
`protected java.awt.FontMetrics`	`_titleFontMetrics`
`protected int`	`_topPadding`
`protected int`	`_ulx`	The x value of the upper left corner of the plot rectangle in pixels.
`protected int`	`_uly`	The y value of the upper left corner of the plot rectangle in pixels.
`protected boolean`	`_usecolor`
`protected int`	`_width`
`protected boolean`	`_wrap`
`protected double`	`_wrapHigh`
`protected double`	`_wrapLow`
`protected double`	`_xBottom`
`protected boolean`	`_xflip`
`protected double`	`_xhighgiven`
`protected boolean`	`_xlog`
`protected double`	`_xlowgiven`
`protected double`	`_xMax`
`protected double`	`_xMin`
`protected boolean`	`_xRangeGiven`
`protected double`	`_xscale`	Scaling used for the horizontal axis in plotting points.
`protected double`	`_xTop`
`protected double`	`_yBottom`
`protected boolean`	`_yflip`
`protected double`	`_yhighgiven`
`protected boolean`	`_ylog`
`protected double`	`_ylowgiven`
`protected double`	`_yMax`
`protected double`	`_yMin`
`protected boolean`	`_yRangeGiven`
`protected double`	`_yscale`	Scaling used for the vertical axis in plotting points.
`protected double`	`_yTop`
`static java.lang.String`	`PTPLOT_RELEASE`

Fields inherited from class javax.swing.JComponent
listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Component
accessibleContext, 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

Fields inherited from interface uk.ac.starlink.ttools.plot.PlotSurface
MAX_COORD

Fields inherited from interface java.awt.print.Printable
NO_SUCH_PAGE, PAGE_EXISTS

Constructor Summary

Constructors
Constructor Description

PtPlotSurface()
Constructs a new surface.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`protected void`	`_drawPlot(java.awt.Graphics graphics, boolean clearfirst)`	Draw the axes using the current range, label, and title information.
`protected void`	`_drawPlot(java.awt.Graphics graphics, boolean clearfirst, java.awt.Rectangle drawRect)`	Draw the axes using the current range, label, and title information, at the size of the specified rectangle.
`protected void`	`_drawPoint(java.awt.Graphics graphics, int dataset, long xpos, long ypos, boolean clip)`	Put a mark corresponding to the specified dataset at the specified x and y position.
`protected void`	`_help()`	Display basic information in its own window.
`protected void`	`_setButtonsVisibility(boolean vis)`	Deprecated.
`protected void`	`_setPadding(double padding)`	Set the padding multiple.
`void`	`_setYRange(double min, double max)`
`protected void`	`_zoom(int x, int y)`
`void`	`addLegend(int dataset, java.lang.String legend)`	Add a legend (displayed at the upper right) for the specified data set with the specified string.
`void`	`addXTick(java.lang.String label, double position)`	Specify a tick mark for the X axis.
`void`	`addYTick(java.lang.String label, double position)`	Specify a tick mark for the Y axis.
`void`	`clear(boolean axes)`	If the argument is true, clear the axes.
`void`	`clearLegends()`	Clear all legends.
`java.awt.Point`	`dataToGraphics(double dx, double dy, boolean insideOnly)`	Converts a point in data space to graphics space.
`void`	`deferIfNecessary(java.lang.Runnable action)`	If this method is called in the event thread, then simply execute the specified action.
`void`	`fillPlot()`	Rescale so that the data that is currently plotted just fits.
`java.awt.Shape`	`getClip()`	Returns the clip region in which points may be plotted.
`boolean`	`getColor()`	Return whether the plot uses color.
`static java.awt.Color`	`getColorByName(java.lang.String name)`	Convert a color name into a Color.
`javax.swing.JComponent`	`getComponent()`	Returns the graphical component on which the plotting surface is displayed.
`java.lang.String`	`getDataurl()`	Deprecated.
`java.net.URL`	`getDocumentBase()`	Deprecated.
`boolean`	`getGrid()`	Return whether the grid is drawn.
`java.lang.String`	`getLegend(int dataset)`	Get the legend for a dataset, or null if there is none.
`java.awt.Dimension`	`getMaximumSize()`	If the size of the plot has been set by setSize(), then return that size.
`java.awt.Dimension`	`getMinimumSize()`	Get the minimum size of this component.
`java.lang.String`	`getTitle()`	Get the title of the graph, or an empty string if there is none.
`java.lang.String`	`getXLabel()`	Get the label for the X (horizontal) axis, or null if none has been set.
`boolean`	`getXLog()`	Return whether the X axis is drawn with a logarithmic scale.
`double[]`	`getXRange()`	Get the X range.
`java.util.Vector[]`	`getXTicks()`	Get the X ticks that have been specified, or null if none.
`java.lang.String`	`getYLabel()`	Get the label for the Y (vertical) axis, or null if none has been set.
`boolean`	`getYLog()`	Return whether the Y axis is drawn with a logarithmic scale.
`double[]`	`getYRange()`	Get the Y range.
`java.util.Vector[]`	`getYTicks()`	Get the Y ticks that have been specified, or null if none.
`double[]`	`graphicsToData(int px, int py, boolean insideOnly)`	Converts a point in graphics space to data space.
`void`	`init()`	Deprecated.
`void`	`paintComponent(java.awt.Graphics graphics)`	Paint the component contents, which in this base class is only the axes.
`void`	`paintSurface(java.awt.Graphics g)`	Paints the plotting surface.
`int`	`print(java.awt.Graphics graphics, java.awt.print.PageFormat format, int index)`	Print the plot to a printer, represented by the specified graphics object.
`void`	`removeLegend(int dataset)`	Remove the legend (displayed at the upper right) for the specified data set.
`void`	`resetAxes()`	Reset the X and Y axes to the ranges that were first specified using setXRange() and setYRange().
`void`	`samplePlot()`	Do nothing in this base class.
`void`	`setBackground(java.awt.Color background)`	Set the background color.
`void`	`setBounds(int x, int y, int width, int height)`	Move and resize this component.
`void`	`setButtons(boolean visible)`	If the argument is true, make a fill button visible at the upper right.
`void`	`setColor(boolean useColor)`	If the argument is false, draw the plot without using color (in black and white).
`void`	`setDataRange(double xlo, double ylo, double xhi, double yhi)`	Requests a range of data space values to be visible on this plotting surface.
`void`	`setDataurl(java.lang.String filespec)`	Deprecated.
`void`	`setDocumentBase(java.net.URL documentBase)`	Deprecated.
`void`	`setFont(java.awt.Font font)`
`void`	`setForeground(java.awt.Color foreground)`	Set the foreground color.
`void`	`setGrid(boolean grid)`	Control whether the grid is drawn.
`void`	`setLabelFont(java.lang.String name)`	Set the label font, which is used for axis labels and legend labels.
`void`	`setSize(int width, int height)`	Set the size of the plot.
`void`	`setState(PlotState state)`	Signals to the plot the characteristics of the plot which will be performed.
`void`	`setTitle(java.lang.String title)`	Set the title of the graph.
`void`	`setTitleFont(java.lang.String name)`	Set the title font.
`void`	`setWrap(boolean wrap)`	Specify whether the X axis is wrapped.
`void`	`setXFlip(boolean xflip)`	Specify whether the X axis numeric labels should be inverted.
`void`	`setXLabel(java.lang.String label)`	Set the label for the X (horizontal) axis.
`void`	`setXLog(boolean xlog)`	Specify whether the X axis is drawn with a logarithmic scale.
`void`	`setXRange(double min, double max)`	Set the X (horizontal) range of the plot.
`void`	`setYFlip(boolean yflip)`	Specify whether the Y axis numeric labels should be inverted.
`void`	`setYLabel(java.lang.String label)`	Set the label for the Y (vertical) axis.
`void`	`setYLog(boolean ylog)`	Specify whether the Y axis is drawn with a logarithmic scale.
`void`	`setYRange(double min, double max)`	Set the Y (vertical) range of the plot.
`void`	`zoom(double lowx, double lowy, double highx, double highy)`	Zoom in or out to the specified rectangle.

Methods inherited from class javax.swing.JPanel
getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI

Methods inherited from class javax.swing.JComponent
addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getNextFocusableComponent, getPopupLocation, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods inherited from class java.awt.Container
add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - PTPLOT_RELEASE
```
public static final java.lang.String PTPLOT_RELEASE
```
    See Also:
    
    Constant Field Values
  - _yMax
```
protected transient double _yMax
```
  - _yMin
```
protected transient double _yMin
```
  - _xMax
```
protected transient double _xMax
```
  - _xMin
```
protected transient double _xMin
```
  - _padding
```
protected double _padding
```
    The factor we pad by so that we don't plot points on the axes.
  - _xRangeGiven
```
protected transient boolean _xRangeGiven
```
  - _yRangeGiven
```
protected transient boolean _yRangeGiven
```
  - _rangesGivenByZooming
```
protected transient boolean _rangesGivenByZooming
```
  - _xlowgiven
```
protected double _xlowgiven
```
  - _xhighgiven
```
protected double _xhighgiven
```
  - _ylowgiven
```
protected double _ylowgiven
```
  - _yhighgiven
```
protected double _yhighgiven
```
  - _xBottom
```
protected double _xBottom
```
  - _xTop
```
protected double _xTop
```
  - _yBottom
```
protected double _yBottom
```
  - _yTop
```
protected double _yTop
```
  - _xlog
```
protected boolean _xlog
```
  - _ylog
```
protected boolean _ylog
```
  - _xflip
```
protected boolean _xflip
```
  - _yflip
```
protected boolean _yflip
```
  - _LOG10SCALE
```
protected static final double _LOG10SCALE
```
  - _grid
```
protected boolean _grid
```
  - _wrap
```
protected boolean _wrap
```
  - _wrapHigh
```
protected double _wrapHigh
```
  - _wrapLow
```
protected double _wrapLow
```
  - _background
```
protected java.awt.Color _background
```
  - _foreground
```
protected java.awt.Color _foreground
```
  - _topPadding
```
protected int _topPadding
```
  - _bottomPadding
```
protected int _bottomPadding
```
  - _rightPadding
```
protected int _rightPadding
```
  - _leftPadding
```
protected int _leftPadding
```
  - _ulx
```
protected int _ulx
```
    The x value of the upper left corner of the plot rectangle in pixels.
  - _uly
```
protected int _uly
```
    The y value of the upper left corner of the plot rectangle in pixels.
  - _lrx
```
protected int _lrx
```
    The x value of the lower right corner of the plot rectangle in pixels.
  - _lry
```
protected int _lry
```
    The y value of the lower right corner of the plot rectangle in pixels.
  - _yscale
```
protected double _yscale
```
    Scaling used for the vertical axis in plotting points. The units are pixels/unit, where unit is the units of the Y axis.
  - _xscale
```
protected double _xscale
```
    Scaling used for the horizontal axis in plotting points. The units are pixels/unit, where unit is the units of the X axis.
  - _usecolor
```
protected boolean _usecolor
```
  - _tickLength
```
public int _tickLength
```
    Length of tickmarks.
  - _colors
```
protected static java.awt.Color[] _colors
```
  - _width
```
protected int _width
```
  - _height
```
protected int _height
```
  - _preferredWidth
```
protected int _preferredWidth
```
  - _preferredHeight
```
protected int _preferredHeight
```
  - _sizeHasBeenSet
```
protected boolean _sizeHasBeenSet
```
  - _expThreshold
```
protected int _expThreshold
```
  - _documentBase
```
public java.net.URL _documentBase
```
  - _labelFont
```
protected java.awt.Font _labelFont
```
  - _superscriptFont
```
protected java.awt.Font _superscriptFont
```
  - _titleFont
```
protected java.awt.Font _titleFont
```
  - _labelFontMetrics
```
protected java.awt.FontMetrics _labelFontMetrics
```
  - _superscriptFontMetrics
```
protected java.awt.FontMetrics _superscriptFontMetrics
```
  - _titleFontMetrics
```
protected java.awt.FontMetrics _titleFontMetrics
```
- Constructor Detail
  - PtPlotSurface
```
public PtPlotSurface()
```
    Constructs a new surface.
- Method Detail
  - setFont
```
public void setFont(java.awt.Font font)
```
    Overrides:
    
    setFont in class javax.swing.JComponent
  - setState
```
public void setState(PlotState state)
```
    Description copied from interface: PlotSurface
    
    Signals to the plot the characteristics of the plot which will be performed. Setting this has no immediate effect, but when the component supplied by PlotSurface.getComponent() next paints itself it should do so following the specifications made here.
    
    Specified by:
    
    setState in interface PlotSurface
    
    Parameters:
    
    state - plot characteristics
  - setDataRange
```
public void setDataRange(double xlo,
                         double ylo,
                         double xhi,
                         double yhi)
```
    Description copied from interface: PlotSurface
    
    Requests a range of data space values to be visible on this plotting surface.
    
    Specified by:
    
    setDataRange in interface PlotSurface
    
    Parameters:
    
    xlo - (approximate) lower bound of X coordinate
    
    ylo - (approximate) lower bound of Y coordinate
    
    xhi - (approximate) upper bound of X coordinate
    
    yhi - (approximate) upper bound of Y coordinate
  - dataToGraphics
```
public java.awt.Point dataToGraphics(double dx,
                                     double dy,
                                     boolean insideOnly)
```
    Description copied from interface: PlotSurface
    
    Converts a point in data space to graphics space. If the insideOnly flag is true, then null will be returned in place of any result which would give a point lying outside the visible plotting area.
    The coordinates of the returned point must have absolute values no greater than PlotSurface.MAX_COORD.
    
    Specified by:
    
    dataToGraphics in interface PlotSurface
    
    Parameters:
    
    dx - data space X coordinate
    
    dy - data space Y coordinate
    
    insideOnly - true to restrict non-null results to those within the plotting surface
    
    Returns:
    
    point in graphics space corresponding to (x,y), or null
  - graphicsToData
```
public double[] graphicsToData(int px,
                               int py,
                               boolean insideOnly)
```
    Description copied from interface: PlotSurface
    
    Converts a point in graphics space to data space. If the insideOnly flag is true, then null will be returned in place of any result which would give a point lying outside the visible plotting area.
    
    Specified by:
    
    graphicsToData in interface PlotSurface
    
    Parameters:
    
    px - graphics space X coordinate
    
    py - graphics space Y coordinate
    
    insideOnly - true to restrict non-null results to those within the plotting surface
    
    Returns:
    
    a 2-element array giving x and y data space coordinates, or null
  - getClip
```
public java.awt.Shape getClip()
```
    Description copied from interface: PlotSurface
    
    Returns the clip region in which points may be plotted. The returned shape should be the sort which can be passed to Graphics.setClip(java.awt.Shape) - i.e. probably a Rectangle.
    
    Specified by:
    
    getClip in interface PlotSurface
    
    Returns:
    
    clip region representing data zone
  - getComponent
```
public javax.swing.JComponent getComponent()
```
    Description copied from interface: PlotSurface
    
    Returns the graphical component on which the plotting surface is displayed. This will contain things like axes, grids, labels etc. This component will normally override JComponent.paintComponent(java.awt.Graphics) to give a plotting background in accordance with the most recently set PlotState.
    
    Specified by:
    
    getComponent in interface PlotSurface
    
    Returns:
    
    plot surface display component
  - paintSurface
```
public void paintSurface(java.awt.Graphics g)
```
    Description copied from interface: PlotSurface
    
    Paints the plotting surface. This should do roughly the same as getComponent.paintComponent, except that it's public.
    Requiring this here isn't very tidy, but following quite a bit of experimentation I can't work out any other way to do scatter plot image caching while still drawing to a potentially hardware-accelerated graphics context (see ScatterPlot implementation).
    
    Specified by:
    
    paintSurface in interface PlotSurface
    
    Parameters:
    
    g - graphics context
  - _zoom
```
protected void _zoom(int x,
                     int y)
```
  - addLegend
```
public void addLegend(int dataset,
                      java.lang.String legend)
```
    Add a legend (displayed at the upper right) for the specified data set with the specified string. Short strings generally fit better than long strings. If the string is empty, or the argument is null, then no legend is added.
    
    Parameters:
    
    dataset - The dataset index.
    
    legend - The label for the dataset.
  - addXTick
```
public void addXTick(java.lang.String label,
                     double position)
```
    Specify a tick mark for the X axis. The label given is placed on the axis at the position given by position. If this is called once or more, automatic generation of tick marks is disabled. The tick mark will appear only if it is within the X range.
    
    Parameters:
    
    label - The label for the tick mark.
    
    position - The position on the X axis.
  - addYTick
```
public void addYTick(java.lang.String label,
                     double position)
```
    Specify a tick mark for the Y axis. The label given is placed on the axis at the position given by position. If this is called once or more, automatic generation of tick marks is disabled. The tick mark will appear only if it is within the Y range.
    
    Parameters:
    
    label - The label for the tick mark.
    
    position - The position on the Y axis.
  - clear
```
public void clear(boolean axes)
```
    If the argument is true, clear the axes. I.e., set all parameters controlling the axes to their initial conditions. For the change to take effect, call repaint(). If the argument is false, do nothing.
    
    Parameters:
    
    axes - If true, clear the axes parameters.
  - clearLegends
```
public void clearLegends()
```
    Clear all legends. This will show up on the next redraw.
  - deferIfNecessary
```
public void deferIfNecessary(java.lang.Runnable action)
```
    If this method is called in the event thread, then simply execute the specified action. Otherwise, if there are already deferred actions, then add the specified one to the list. Otherwise, create a list of deferred actions, if necessary, and request that the list be processed in the event dispatch thread. Note that it does not work nearly as well to simply schedule the action yourself on the event thread because if there are a large number of actions, then the event thread will not be able to keep up. By grouping these actions, we avoid this problem. This method is not synchronized, so the caller should be.
    
    Parameters:
    
    action - The Runnable object to execute.
  - fillPlot
```
public void fillPlot()
```
    Rescale so that the data that is currently plotted just fits. This is done based on the protected variables _xBottom, _xTop, _yBottom, and _yTop. It is up to derived classes to ensure that variables are valid. This method calls repaint(), which eventually causes the display to be updated.
  - getColor
```
public boolean getColor()
```
    Return whether the plot uses color.
    
    Returns:
    
    True if the plot uses color.
  - getColorByName
```
public static java.awt.Color getColorByName(java.lang.String name)
```
    Convert a color name into a Color. Currently, only a very limited set of color names is supported: black, white, red, green, and blue.
    
    Parameters:
    
    name - A color name, or null if not found.
    
    Returns:
    
    An instance of Color.
  - getDataurl
```
public java.lang.String getDataurl()
```
    Deprecated.
    
    Get the file specification that was given by setDataurl. This method is deprecated. Use read() instead.
  - getDocumentBase
```
public java.net.URL getDocumentBase()
```
    Deprecated.
    
    Get the document base that was set by setDocumentBase. This method is deprecated. Use read() instead.
  - getGrid
```
public boolean getGrid()
```
    Return whether the grid is drawn.
    
    Returns:
    
    True if a grid is drawn.
  - getLegend
```
public java.lang.String getLegend(int dataset)
```
    Get the legend for a dataset, or null if there is none. The legend would have been set by addLegend().
    
    Parameters:
    
    dataset - The dataset index.
    
    Returns:
    
    The legend label, or null if there is none.
  - getMaximumSize
```
public java.awt.Dimension getMaximumSize()
```
    If the size of the plot has been set by setSize(), then return that size. Otherwise, return what the superclass returns (which is undocumented, but apparently imposes no maximum size). Currently (JDK 1.3), only BoxLayout pays any attention to this.
    
    Overrides:
    
    getMaximumSize in class javax.swing.JComponent
    
    Returns:
    
    The maximum desired size.
  - getMinimumSize
```
public java.awt.Dimension getMinimumSize()
```
    Get the minimum size of this component. This is simply the dimensions specified by setSize(), if this has been called. Otherwise, return whatever the base class returns, which is undocumented.
    
    Overrides:
    
    getMinimumSize in class javax.swing.JComponent
    
    Returns:
    
    The minimum size.
  - getTitle
```
public java.lang.String getTitle()
```
    Get the title of the graph, or an empty string if there is none.
    
    Returns:
    
    The title.
  - getXLabel
```
public java.lang.String getXLabel()
```
    Get the label for the X (horizontal) axis, or null if none has been set.
    
    Returns:
    
    The X label.
  - getXLog
```
public boolean getXLog()
```
    Return whether the X axis is drawn with a logarithmic scale.
    
    Returns:
    
    True if the X axis is logarithmic.
  - getXRange
```
public double[] getXRange()
```
    Get the X range. The returned value is an array where the first element is the minimum and the second element is the maximum. return The current X range.
  - getXTicks
```
public java.util.Vector[] getXTicks()
```
    Get the X ticks that have been specified, or null if none. The return value is an array with two vectors, the first of which specifies the X tick locations (as instances of Double), and the second of which specifies the corresponding labels.
    
    Returns:
    
    The X ticks.
  - getYLabel
```
public java.lang.String getYLabel()
```
    Get the label for the Y (vertical) axis, or null if none has been set.
    
    Returns:
    
    The Y label.
  - getYLog
```
public boolean getYLog()
```
    Return whether the Y axis is drawn with a logarithmic scale.
    
    Returns:
    
    True if the Y axis is logarithmic.
  - getYRange
```
public double[] getYRange()
```
    Get the Y range. The returned value is an array where the first element is the minimum and the second element is the maximum. return The current Y range.
  - getYTicks
```
public java.util.Vector[] getYTicks()
```
    Get the Y ticks that have been specified, or null if none. The return value is an array with two vectors, the first of which specifies the Y tick locations (as instances of Double), and the second of which specifies the corresponding labels.
    
    Returns:
    
    The Y ticks.
  - init
```
public void init()
```
    Deprecated.
    
    Initialize the component, creating the fill button and parsing an input file, if one has been specified. This is deprecated. Call setButtons() and read() instead.
  - paintComponent
```
public void paintComponent(java.awt.Graphics graphics)
```
    Paint the component contents, which in this base class is only the axes.
    
    Overrides:
    
    paintComponent in class javax.swing.JComponent
    
    Parameters:
    
    graphics - The graphics context.
  - print
```
public int print(java.awt.Graphics graphics,
                 java.awt.print.PageFormat format,
                 int index)
          throws java.awt.print.PrinterException
```
    Print the plot to a printer, represented by the specified graphics object.
    
    Specified by:
    
    print in interface java.awt.print.Printable
    
    Parameters:
    
    graphics - The context into which the page is drawn.
    
    format - The size and orientation of the page being drawn.
    
    index - The zero based index of the page to be drawn.
    
    Returns:
    
    PAGE_EXISTS if the page is rendered successfully, or NO_SUCH_PAGE if pageIndex specifies a non-existent page.
    
    Throws:
    
    java.awt.print.PrinterException - If the print job is terminated.
  - removeLegend
```
public void removeLegend(int dataset)
```
    Remove the legend (displayed at the upper right) for the specified data set. If the dataset is not found, nothing will occur. The PlotBox must be repainted in order for this to take effect.
    
    Parameters:
    
    dataset - The dataset index.
  - resetAxes
```
public void resetAxes()
```
    Reset the X and Y axes to the ranges that were first specified using setXRange() and setYRange(). If these methods have not been called, then reset to the default ranges. This method calls repaint(), which eventually causes the display to be updated.
  - samplePlot
```
public void samplePlot()
```
    Do nothing in this base class. Derived classes might want to override this class to give an example of their use.
  - setBackground
```
public void setBackground(java.awt.Color background)
```
    Set the background color.
    
    Overrides:
    
    setBackground in class javax.swing.JComponent
    
    Parameters:
    
    background - The background color.
  - setBounds
```
public void setBounds(int x,
                      int y,
                      int width,
                      int height)
```
    Move and resize this component. The new location of the top-left corner is specified by x and y, and the new size is specified by width and height. This overrides the base class method to make a record of the new size.
    
    Overrides:
    
    setBounds in class java.awt.Component
    
    Parameters:
    
    x - The new x-coordinate of this component.
    
    y - The new y-coordinate of this component.
    
    width - The new width of this component.
    
    height - The new height of this component.
  - setButtons
```
public void setButtons(boolean visible)
```
    If the argument is true, make a fill button visible at the upper right. This button auto-scales the plot. NOTE: The button may infringe on the title space, if the title is long. In an application, it is preferable to provide a menu with the fill command. This way, when printing the plot, the printed plot will not have a spurious button. Thus, this method should be used only by applets, which normally do not have menus. This method should only be called from within the event dispatch thread, since it interacts with swing.
  - setColor
```
public void setColor(boolean useColor)
```
    If the argument is false, draw the plot without using color (in black and white). Otherwise, draw it in color (the default).
    
    Parameters:
    
    useColor - False to draw in back and white.
  - setDataurl
```
public void setDataurl(java.lang.String filespec)
```
    Deprecated.
    
    Set the file to read when init() is called. This method is deprecated. Use read() instead.
  - setDocumentBase
```
public void setDocumentBase(java.net.URL documentBase)
```
    Deprecated.
    
    Set the document base to used when init() is called to read a URL. This method is deprecated. Use read() instead.
  - setForeground
```
public void setForeground(java.awt.Color foreground)
```
    Set the foreground color.
    
    Overrides:
    
    setForeground in class javax.swing.JComponent
    
    Parameters:
    
    foreground - The foreground color.
  - setGrid
```
public void setGrid(boolean grid)
```
    Control whether the grid is drawn.
    
    Parameters:
    
    grid - If true, a grid is drawn.
  - setLabelFont
```
public void setLabelFont(java.lang.String name)
```
    Set the label font, which is used for axis labels and legend labels. The font names understood are those understood by java.awt.Font.decode().
    
    Parameters:
    
    name - A font name.
  - setSize
```
public void setSize(int width,
                    int height)
```
    Set the size of the plot. This overrides the base class to make it work. In particular, it records the specified size so that getMinimumSize() and getPreferredSize() return the specified value. However, it only works if the plot is placed in its own JPanel. This is because the JPanel asks the contained component for its preferred size before determining the size of the panel. If the plot is placed directly in the content pane of a JApplet, then, mysteriously, this method has no effect.
    
    Overrides:
    
    setSize in class java.awt.Component
    
    Parameters:
    
    width - The width, in pixels.
    
    height - The height, in pixels.
  - setTitle
```
public void setTitle(java.lang.String title)
```
    Set the title of the graph.
    
    Parameters:
    
    title - The title.
  - setTitleFont
```
public void setTitleFont(java.lang.String name)
```
    Set the title font. The font names understood are those understood by java.awt.Font.decode().
    
    Parameters:
    
    name - A font name.
  - setWrap
```
public void setWrap(boolean wrap)
```
    Specify whether the X axis is wrapped. If it is, then X values that are out of range are remapped to be in range using modulo arithmetic. The X range is determined by the most recent call to setXRange() (or the most recent zoom). If the X range has not been set, then use the default X range, or if data has been plotted, then the current fill range.
    
    Parameters:
    
    wrap - If true, wrapping of the X axis is enabled.
  - setXLabel
```
public void setXLabel(java.lang.String label)
```
    Set the label for the X (horizontal) axis.
    
    Parameters:
    
    label - The label.
  - setXLog
```
public void setXLog(boolean xlog)
```
    Specify whether the X axis is drawn with a logarithmic scale. If you would like to have the X axis drawn with a logarithmic axis, then setXLog(true) should be called before adding any data points.
    
    Parameters:
    
    xlog - If true, logarithmic axis is used.
  - setXFlip
```
public void setXFlip(boolean xflip)
```
    Specify whether the X axis numeric labels should be inverted.
    
    Parameters:
    
    xflip - If true, numbers on X axis will be the negative of their true values
  - setXRange
```
public void setXRange(double min,
                      double max)
```
    Set the X (horizontal) range of the plot. If this is not done explicitly, then the range is computed automatically from data available when the plot is drawn. If min and max are identical, then the range is arbitrarily spread by 1.
    
    Parameters:
    
    min - The left extent of the range.
    
    max - The right extent of the range.
  - setYLabel
```
public void setYLabel(java.lang.String label)
```
    Set the label for the Y (vertical) axis.
    
    Parameters:
    
    label - The label.
  - setYLog
```
public void setYLog(boolean ylog)
```
    Specify whether the Y axis is drawn with a logarithmic scale. If you would like to have the Y axis drawn with a logarithmic axis, then setYLog(true) should be called before adding any data points.
    
    Parameters:
    
    ylog - If true, logarithmic axis is used.
  - setYFlip
```
public void setYFlip(boolean yflip)
```
    Specify whether the Y axis numeric labels should be inverted.
    
    Parameters:
    
    yflip - If true, numbers on Y axis will be the negative of their true values
  - setYRange
```
public void setYRange(double min,
                      double max)
```
    Set the Y (vertical) range of the plot. If this is not done explicitly, then the range is computed automatically from data available when the plot is drawn. If min and max are identical, then the range is arbitrarily spread by 0.1.
    
    Parameters:
    
    min - The bottom extent of the range.
    
    max - The top extent of the range.
  - zoom
```
public void zoom(double lowx,
                 double lowy,
                 double highx,
                 double highy)
```
    Zoom in or out to the specified rectangle. This method calls repaint().
    
    Parameters:
    
    lowx - The low end of the new X range.
    
    lowy - The low end of the new Y range.
    
    highx - The high end of the new X range.
    
    highy - The high end of the new Y range.
  - _drawPlot
```
protected void _drawPlot(java.awt.Graphics graphics,
                         boolean clearfirst)
```
    Draw the axes using the current range, label, and title information. If the second argument is true, clear the display before redrawing. This method is called by paintComponent(). To cause it to be called you would normally call repaint(), which eventually causes paintComponent() to be called.
    Note that this is synchronized so that points are not added by other threads while the drawing is occurring. This method should be called only from the event dispatch thread, consistent with swing policy.
    
    Parameters:
    
    graphics - The graphics context.
    
    clearfirst - If true, clear the plot before proceeding.
  - _drawPlot
```
protected void _drawPlot(java.awt.Graphics graphics,
                         boolean clearfirst,
                         java.awt.Rectangle drawRect)
```
    Draw the axes using the current range, label, and title information, at the size of the specified rectangle. If the second argument is true, clear the display before redrawing. This method is called by paintComponent(). To cause it to be called you would normally call repaint(), which eventually causes paintComponent() to be called.
    Note that this is synchronized so that points are not added by other threads while the drawing is occurring. This method should be called only from the event dispatch thread, consistent with swing policy.
    
    Parameters:
    
    graphics - The graphics context.
    
    clearfirst - If true, clear the plot before proceeding.
    
    drawRect - A specification of the size.
  - _drawPoint
```
protected void _drawPoint(java.awt.Graphics graphics,
                          int dataset,
                          long xpos,
                          long ypos,
                          boolean clip)
```
    Put a mark corresponding to the specified dataset at the specified x and y position. The mark is drawn in the current color. In this base class, a point is a filled rectangle 6 pixels across. Note that marks greater than about 6 pixels in size will not look very good since they will overlap axis labels and may not fit well in the legend. The clip argument, if true, states that the point should not be drawn if it is out of range. Note that this method is not synchronized, so the caller should be. Moreover this method should always be called from the event thread when being used to write to the screen.
    
    Parameters:
    
    graphics - The graphics context.
    
    dataset - The index of the data set.
    
    xpos - The X position.
    
    ypos - The Y position.
    
    clip - If true, do not draw if out of range.
  - _help
```
protected void _help()
```
    Display basic information in its own window.
  - _setButtonsVisibility
```
protected void _setButtonsVisibility(boolean vis)
```
    Deprecated.
    
    Set the visibility of the Fill button. This is deprecated. Use setButtons().
  - _setPadding
```
protected void _setPadding(double padding)
```
    Set the padding multiple. The plot rectangle can be "padded" in each direction -x, +x, -y, and +y. If the padding is set to 0.05 (and the padding is used), then there is 10% more length on each axis than set by the setXRange() and setYRange() methods, 5% in each direction.
    
    Parameters:
    
    padding - The padding multiple.
  - _setYRange
```
public void _setYRange(double min,
                       double max)
```

Class PtPlotSurface

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.JPanel

Nested classes/interfaces inherited from class javax.swing.JComponent

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

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

Field Summary

Fields inherited from class javax.swing.JComponent

Fields inherited from class java.awt.Component

Fields inherited from interface java.awt.image.ImageObserver

Fields inherited from interface uk.ac.starlink.ttools.plot.PlotSurface

Fields inherited from interface java.awt.print.Printable

Constructor Summary

Method Summary

Methods inherited from class javax.swing.JPanel

Methods inherited from class javax.swing.JComponent

Methods inherited from class java.awt.Container

Methods inherited from class java.awt.Component

Methods inherited from class java.lang.Object

Field Detail

PTPLOT_RELEASE

_yMax

_yMin

_xMax

_xMin

_padding

_xRangeGiven

_yRangeGiven

_rangesGivenByZooming

_xlowgiven

_xhighgiven

_ylowgiven

_yhighgiven

_xBottom

_xTop

_yBottom

_yTop

_xlog

_ylog

_xflip

_yflip

_LOG10SCALE

_grid

_wrap

_wrapHigh

_wrapLow

_background

_foreground

_topPadding

_bottomPadding

_rightPadding

_leftPadding

_ulx

_uly

_lrx

_lry

_yscale

_xscale

_usecolor

_tickLength

_colors

_width

_height

_preferredWidth

_preferredHeight

_sizeHasBeenSet

_expThreshold

_documentBase

_labelFont

_superscriptFont

_titleFont

_labelFontMetrics

_superscriptFontMetrics

_titleFontMetrics

Constructor Detail

PtPlotSurface

Method Detail

setFont

setState

setDataRange