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Class weka.gui.explorer.PreprocessPanel 

java.lang.Object
    |
    +----java.awt.Component
            |
            +----java.awt.Container
                    |
                    +----javax.swing.JComponent
                            |
                            +----javax.swing.JPanel
                                    |
                                    +----weka.gui.explorer.PreprocessPanel
public class PreprocessPanel
extends javax.swing.JPanel
This panel controls simple preprocessing of instances. Summary information on instances and attributes is shown. Filters may be configured to alter the set of instances. Altered instances may also be saved.

Version:
$Revision: 1.34 $
Author:
Richard Kirkby (rkirkby@cs.waikato.ac.nz)
Author:
Len Trigg (trigg@cs.waikato.ac.nz)

Constructor Index

o PreprocessPanel()
Creates the instances panel with no initial instances.

Method Index

o addPropertyChangeListener(PropertyChangeListener)
Adds a PropertyChangeListener who will be notified of value changes.
o addUndoPoint()
Backs up the current state of the dataset, so the changes can be undone.
o getInstances()
Gets the working set of instances.
o main(String[])
Tests out the instance-preprocessing panel from the command line.
o removePropertyChangeListener(PropertyChangeListener)
Removes a PropertyChangeListener.
o saveWorkingInstancesToFileQ()
Queries the user for a file to save instances as, then saves the instances in a background process.
o setInstances(Instances)
Tells the panel to use a new base set of instances.
o setInstancesFromDB(InstanceQuery)
Loads instances from a database
o setInstancesFromDBQ()
Queries the user for a URL to a database to load instances from, then loads the instances in a background process.
o setInstancesFromFile(File)
Loads results from a set of instances contained in the supplied file.
o setInstancesFromFileQ()
Queries the user for a file to load instances from, then loads the instances in a background process.
o setInstancesFromURL(URL)
Loads instances from a URL.
o setInstancesFromURLQ()
Queries the user for a URL to load instances from, then loads the instances in a background process.
o setLog(Logger)
Sets the Logger to receive informational messages
o undo()
Reverts to the last backed up version of the dataset.

Constructor Detail

o PreprocessPanel
public PreprocessPanel()
          Creates the instances panel with no initial instances.

Method Detail

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 setInstances
public void setInstances(Instances inst)
          Tells the panel to use a new base set of instances.
Parameters:
inst - a set of Instances
o getInstances
public Instances getInstances()
          Gets the working set of instances.
Returns:
the working instances
o addPropertyChangeListener
public void addPropertyChangeListener(java.beans.PropertyChangeListener l)
          Adds a PropertyChangeListener who will be notified of value changes.
Parameters:
l - a value of type 'PropertyChangeListener'
Overrides:
addPropertyChangeListener in class javax.swing.JComponent
o removePropertyChangeListener
public void removePropertyChangeListener(java.beans.PropertyChangeListener l)
          Removes a PropertyChangeListener.
Parameters:
l - a value of type 'PropertyChangeListener'
Overrides:
removePropertyChangeListener in class javax.swing.JComponent
o saveWorkingInstancesToFileQ
public void saveWorkingInstancesToFileQ()
          Queries the user for a file to save instances as, then saves 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.
o 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.
o setInstancesFromDBQ
public void setInstancesFromDBQ()
          Queries the user for a URL to a database 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.
o setInstancesFromURLQ
public void setInstancesFromURLQ()
          Queries the user for a URL 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.
o setInstancesFromFile
public void setInstancesFromFile(java.io.File f)
          Loads results from a set of instances contained in the supplied file. This is started in the IO thread, and a dialog is popped up if there's a problem.
Parameters:
f - a value of type 'File'
o setInstancesFromDB
public void setInstancesFromDB(InstanceQuery iq)
          Loads instances from a database
Parameters:
iq - the InstanceQuery object to load from (this is assumed to have been already connected to a valid database).
o setInstancesFromURL
public void setInstancesFromURL(java.net.URL u)
          Loads instances from a URL.
Parameters:
u - the URL to load from.
o addUndoPoint
public void addUndoPoint() throws java.lang.Exception
          Backs up the current state of the dataset, so the changes can be undone.
o undo
public void undo()
          Reverts to the last backed up version of the dataset.
o main
public static void main(java.lang.String args[])
          Tests out the instance-preprocessing panel from the command line.
Parameters:
args - ignored 
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