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Class weka.gui.visualize.VisualizePanel 

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Container
                   |
                   +----javax.swing.JComponent
                           |
                           +----javax.swing.JPanel
                                   |
                                   +----weka.gui.visualize.VisualizePanel
public class VisualizePanel
extends JPanel
This panel allows the user to visualize a dataset (and if provided) a classifier's/clusterer's predictions in two dimensions. If the user selects a nominal attribute as the colouring attribute then each point is drawn in a colour that corresponds to the discrete value of that attribute for the instance. If the user selects a numeric attribute to colour on, then the points are coloured using a spectrum ranging from blue to red (low values to high). When a classifier's predictions are supplied they are plotted in one of two ways (depending on whether the class is nominal or numeric).
For nominal class: an error made by a classifier is plotted as a square in the colour corresponding to the class it predicted.
For numeric class: predictions are plotted as varying sized x's, where the size of the x is related to the magnitude of the error.

Author:
Mark Hall (mhall@cs.waikato.ac.nz), Malcolm Ware (mfw4@cs.waikato.ac.nz)

Constructor Index

o VisualizePanel()
Constructor
o VisualizePanel(VisualizePanelListener)
This constructor allows a VisualizePanelListener to be set.

Method Index

o addActionListener(ActionListener)
Add a listener for this visualize panel
o addPlot(PlotData2D)
Set a new plot to the visualize panel
o getCIndex()
Get the index of the attribute selected for coloring
o getInstances()
Get the master plot's instances
o getName()
Returns the name associated with this plot.
o getSIndex()
Get the index of the shape selected for creating splits.
o getXIndex()
Get the index of the attribute on the x axis
o getYIndex()
Get the index of the attribute on the y axis
o main(String[])
Main method for testing this class
o setColourIndex(int)
Sets the index used for colouring.
o setInstances(Instances)
Tells the panel to use a new set of instances.
o setLog(Logger)
Sets the Logger to receive informational messages
o setMasterPlot(PlotData2D)
Set the master plot for the visualize panel
o setName(String)
Set a name for this plot
o setShapes(FastVector)
This will set the shapes for the instances.
o setSIndex(int)
Set the shape for creating splits.
o setUpComboBoxes(Instances)
o setXIndex(int)
Set the index of the attribute for the x axis
o setYIndex(int)
Set the index of the attribute for the y axis

Constructors

o VisualizePanel 
 public VisualizePanel(VisualizePanelListener ls)
This constructor allows a VisualizePanelListener to be set.

o VisualizePanel 
 public VisualizePanel()
Constructor

Methods

o setLog 
 public void setLog(Logger newLog)
Sets the Logger to receive informational messages

Parameters:
newLog - the Logger that will now get info messages
o setColourIndex 
 public void setColourIndex(int index)
Sets the index used for colouring. If this method is called then the supplied index is used and the combo box for selecting colouring attribute is disabled.

Parameters:
index - the index of the attribute to use for colouring
o setXIndex 
 public void setXIndex(int index) throws Exception
Set the index of the attribute for the x axis

Parameters:
index - the index for the x axis
Throws: Exception
if index is out of range.
o getXIndex 
 public int getXIndex()
Get the index of the attribute on the x axis

Returns:
the index of the attribute on the x axis
o setYIndex 
 public void setYIndex(int index) throws Exception
Set the index of the attribute for the y axis

Parameters:
index - the index for the y axis
Throws: Exception
if index is out of range.
o getYIndex 
 public int getYIndex()
Get the index of the attribute on the y axis

Returns:
the index of the attribute on the x axis
o getCIndex 
 public int getCIndex()
Get the index of the attribute selected for coloring

Returns:
the index of the attribute on the x axis
o getSIndex 
 public int getSIndex()
Get the index of the shape selected for creating splits.

Returns:
The index of the shape.
o setSIndex 
 public void setSIndex(int index) throws Exception
Set the shape for creating splits.

Parameters:
index - The index of the shape.
Throws: Exception
if index is out of range.
o addActionListener 
 public void addActionListener(ActionListener act)
Add a listener for this visualize panel

Parameters:
act - an ActionListener
o setName 
 public void setName(String plotName)
Set a name for this plot

Parameters:
plotName - the name for the plot
Overrides:
setName in class Component
o getName 
 public String getName()
Returns the name associated with this plot. "" is returned if no name is set.

Returns:
the name of the plot
Overrides:
getName in class Component
o getInstances 
 public Instances getInstances()
Get the master plot's instances

Returns:
the master plot's instances
o setShapes 
 public void setShapes(FastVector l)
This will set the shapes for the instances.

Parameters:
l - A list of the shapes, providing that the objects in the lists are non editable the data will be kept intact.
o setInstances 
 public void setInstances(Instances inst)
Tells the panel to use a new set of instances.

Parameters:
inst - a set of Instances
o setUpComboBoxes 
 public void setUpComboBoxes(Instances inst)
o setMasterPlot 
 public void setMasterPlot(PlotData2D newPlot) throws Exception
Set the master plot for the visualize panel

Parameters:
newPlot - the new master plot
Throws: Exception
if the master plot could not be set
o addPlot 
 public void addPlot(PlotData2D newPlot) throws Exception
Set a new plot to the visualize panel

Parameters:
newPlot - the new plot to add
Throws: Exception
if the plot could not be added
o main 
 public static void main(String args[])
Main method for testing this class 

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