weka.gui.boundaryvisualizer

## Class BoundaryVisualizer

- java.lang.Object
- - java.awt.Component
  - - java.awt.Container
    - - javax.swing.JComponent
      - - javax.swing.JPanel
        - - weka.gui.boundaryvisualizer.BoundaryVisualizer

- All Implemented Interfaces:
    java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, javax.accessibility.Accessible, TechnicalInformationHandler

      public class BoundaryVisualizer
      extends javax.swing.JPanel
      implements TechnicalInformationHandler

  BoundaryVisualizer. Allows the visualization of classifier decision boundaries in two dimensions. A supplied classifier is first trained on supplied training data, then a data generator (currently using kernels) is used to generate new instances at points fixed in the two visualization dimensions but random in the other dimensions. These instances are classified by the classifier and plotted as points with colour corresponding to the probability distribution predicted by the classifier. At present, 2 * 2^(# non-fixed dimensions) points are generated from each kernel per pixel in the display. In practice, fewer points than this are actually classified because kernels are weighted (on a per-pixel basis) according to the fixexd dimensions and kernels corresponding to the lowest 1% of the weight mass are discarded. Predicted probability distributions are weighted (acording to the fixed visualization dimensions) and averaged to produce an RGB value for the pixel. For more information, see

  Eibe Frank and Mark Hall (2003). Visualizing Class Probability Estimators. Working Paper 02/03, Department of Computer Science, University of Waikato.

  Since:
    1.0
  Version:
    $Revision: 10222 $
  Author:
    Mark Hall
  See Also:
    `JPanel`, Serialized Form

- - ### Nested Class Summary

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

      `javax.swing.JComponent.AccessibleJComponent`

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

      `java.awt.Component.BaselineResizeBehavior`

  - ### Field Summary

    - ### Fields inherited from class javax.swing.JComponent

      `TOOL_TIP_TEXT_KEY, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW`

    - ### 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

    Constructors
    Constructor and Description
    `BoundaryVisualizer()` Creates a new `BoundaryVisualizer` instance.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static void` | `createNewVisualizerWindow(Classifier classifier, Instances instances)` Creates a new GUI window with all of the BoundaryVisualizer trappings,
    `static boolean` | `getExitIfNoWindowsOpen()` Gets whether System.exit gets called after the last window gets closed
    `Instances` | `getInstances()` Get the training instances
    `TechnicalInformation` | `getTechnicalInformation()` Returns an instance of a TechnicalInformation object, containing detailed information about the technical background of this class, e.g., paper reference or book this class is based on.
    `java.lang.String` | `globalInfo()` Returns a string describing this tool
    `static void` | `main(java.lang.String[] args)` Main method for testing this class
    `void` | `plotTrainingData()` Plots the training data on-screen.
    `void` | `setClassifier(Classifier newClassifier)` Set a classifier to use
    `static void` | `setExitIfNoWindowsOpen(boolean value)` Sets whether System.exit gets called when no more windows are open.
    `void` | `setInstances(Instances inst)` Set the training instances
    `void` | `setInstancesFromFileQ()` Queries the user for a file to load instances from, then loads the instances in a background process.
    `int` | `setUpBoundaryPanel()` Sets up the BoundaryPanel object so that it is ready for plotting.
    `void` | `stopPlotting()` Stops the plotting thread.

    - ### Methods inherited from class javax.swing.JPanel

      `getAccessibleContext, getUI, getUIClassID, setUI, updateUI`

    - ### Methods inherited from class javax.swing.JComponent

      `addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, 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, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintImmediately, paintImmediately, print, printAll, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update`

    - ### Methods inherited from class java.awt.Container

      `add, add, add, add, add, addContainerListener, 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, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate`

    - ### Methods inherited from class java.awt.Component

      `action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, contains, createImage, createImage, createVolatileImage, createVolatileImage, dispatchEvent, enable, enableInputMethods, 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, getPeer, 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, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle`

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### BoundaryVisualizer

          public BoundaryVisualizer()

      Creates a new `BoundaryVisualizer` instance.

  - ### Method Detail

    - #### globalInfo

          public java.lang.String globalInfo()

      Returns a string describing this tool
      Returns:
        a description of the tool suitable for displaying in various Weka GUIs

    - #### getTechnicalInformation

          public TechnicalInformation getTechnicalInformation()

      Returns an instance of a TechnicalInformation object, containing detailed information about the technical background of this class, e.g., paper reference or book this class is based on.
      Specified by:
        `getTechnicalInformation` in interface `TechnicalInformationHandler`
      Returns:
        the technical information about this class

    - #### setClassifier

          public void setClassifier(Classifier newClassifier)
                             throws java.lang.Exception

      Set a classifier to use
      Parameters:
        `newClassifier` - the classifier to use
      Throws:
        `java.lang.Exception` - if an error occurs

    - #### getInstances

          public Instances getInstances()

      Get the training instances
      Returns:
        the training instances

    - #### setInstances

          public void setInstances(Instances inst)
                            throws java.lang.Exception

      Set the training instances
      Parameters:
        `inst` - the instances to use
      Throws:
        `java.lang.Exception`

    - #### setInstancesFromFileQ

          public void setInstancesFromFileQ()

      Queries the user for a file to load instances from, then loads the instances in a background process. This is done in the IO thread, and an error message is popped up if the IO thread is busy.

    - #### setUpBoundaryPanel

          public int setUpBoundaryPanel()
                                 throws java.lang.Exception

      Sets up the BoundaryPanel object so that it is ready for plotting.
      Returns:
        an error code:
        0 - SUCCESS
        1 - ERROR - Kernel bandwidth < 0
        2 - ERROR - Kernel bandwidth >= number of training instances.
      Throws:
        `java.lang.Exception`

    - #### plotTrainingData

          public void plotTrainingData()
                                throws java.lang.Exception

      Plots the training data on-screen. Also does all of the setup required for this to work.
      Throws:
        `java.lang.Exception`

    - #### stopPlotting

          public void stopPlotting()

      Stops the plotting thread.

    - #### setExitIfNoWindowsOpen

          public static void setExitIfNoWindowsOpen(boolean value)

      Sets whether System.exit gets called when no more windows are open.
      Parameters:
        `value` - if TRUE then a System.exit call is ossued after the last window gets closed.

    - #### getExitIfNoWindowsOpen

          public static boolean getExitIfNoWindowsOpen()

      Gets whether System.exit gets called after the last window gets closed
      Returns:
        TRUE if System.exit gets called after last window got closed.

    - #### createNewVisualizerWindow

          public static void createNewVisualizerWindow(Classifier classifier,
                                       Instances instances)
                                                throws java.lang.Exception

      Creates a new GUI window with all of the BoundaryVisualizer trappings,
      Parameters:
        `classifier` - The classifier to use in the new window. May be null.
        `instances` - The dataset to visualize on in the new window. May be null.
      Throws:
        `java.lang.Exception`

    - #### main

          public static void main(java.lang.String[] args)

      Main method for testing this class
      Parameters:
        `args` - a `String[]` value