weka.filters.unsupervised.instance

Class RemoveRange

java.lang.Object

weka.filters.Filter

weka.filters.unsupervised.instance.RemoveRange

All Implemented Interfaces:

Serializable, CapabilitiesHandler, OptionHandler, RevisionHandler, UnsupervisedFilter

public class RemoveRange
extends Filter
implements UnsupervisedFilter, OptionHandler

A filter that removes a given range of instances of a dataset.

Valid options are:

 -R <inst1,inst2-inst4,...>
  Specifies list of instances to select. First and last
  are valid indexes. (required)
 

 -V
  Specifies if inverse of selection is to be output.
 

Version:

$Revision: 8034 $

Author:

Eibe Frank (eibe@cs.waikato.ac.nz)

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RemoveRange()

Method Summary

Methods

Modifier and Type	Method and Description
boolean	batchFinished() Signify that this batch of input to the filter is finished.
Capabilities	getCapabilities() Returns the Capabilities of this filter.
String	getInstancesIndices() Gets ranges of instances selected.
boolean	getInvertSelection() Gets if selection is to be inverted.
String[]	getOptions() Gets the current settings of the filter.
String	getRevision() Returns the revision string.
String	globalInfo() Returns a string describing this filter
boolean	input(Instance instance) Input an instance for filtering.
String	instancesIndicesTipText() Returns the tip text for this property
String	invertSelectionTipText() Returns the tip text for this property
Enumeration	listOptions() Returns an enumeration describing the available options.
static void	main(String[] argv) Main method for testing this class.
boolean	setInputFormat(Instances instanceInfo) Sets the format of the input instances.
void	setInstancesIndices(String rangeList) Sets the ranges of instances to be selected.
void	setInvertSelection(boolean inverse) Sets if selection is to be inverted.
void	setOptions(String[] options) Parses a given list of options.

Methods inherited from class weka.filters.Filter

batchFilterFile, filterFile, getCapabilities, getOutputFormat, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, mayRemoveInstanceAfterFirstBatchDone, numPendingOutput, output, outputPeek, runFilter, toString, useFilter, wekaStaticWrapper

Methods inherited from class java.lang.Object

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

Constructor Detail

RemoveRange

public RemoveRange()

Method Detail

listOptions

public Enumeration listOptions()

Returns an enumeration describing the available options.

Specified by:

listOptions in interface OptionHandler

Returns:

an enumeration of all the available options.

setOptions

public void setOptions(String[] options)
                throws Exception

Parses a given list of options.

Valid options are:

 -R <inst1,inst2-inst4,...>
  Specifies list of instances to select. First and last
  are valid indexes. (required)
 

 -V
  Specifies if inverse of selection is to be output.
 

Specified by:

setOptions in interface OptionHandler

Parameters:

options - the list of options as an array of string.s

Throws:

Exception - if an option is not supported.

getOptions

public String[] getOptions()

Gets the current settings of the filter.

Specified by:

getOptions in interface OptionHandler

Returns:

an array of strings suitable for passing to setOptions.

globalInfo

public String globalInfo()

Returns a string describing this filter

Returns:

a description of the filter suitable for displaying in the GUI.

instancesIndicesTipText

public String instancesIndicesTipText()

Returns the tip text for this property

Returns:

tip text for this property suitable for displaying in the explorer/experimenter gui

getInstancesIndices

public String getInstancesIndices()

Gets ranges of instances selected.

Returns:

a string containing a comma-separated list of ranges

setInstancesIndices

public void setInstancesIndices(String rangeList)

Sets the ranges of instances to be selected. If provided string is null, ranges won't be used for selecting instances.

Parameters:

rangeList - a string representing the list of instances. eg: first-3,5,6-last

Throws:

IllegalArgumentException - if an invalid range list is supplied

invertSelectionTipText

public String invertSelectionTipText()

Returns the tip text for this property

Returns:

tip text for this property suitable for displaying in the explorer/experimenter gui

getInvertSelection

public boolean getInvertSelection()

Gets if selection is to be inverted.

Returns:

true if the selection is to be inverted

setInvertSelection

public void setInvertSelection(boolean inverse)

Sets if selection is to be inverted.

Parameters:

inverse - true if inversion is to be performed

getCapabilities

public Capabilities getCapabilities()

Returns the Capabilities of this filter.

Specified by:

getCapabilities in interface CapabilitiesHandler

Overrides:

getCapabilities in class Filter

Returns:

the capabilities of this object

See Also:

Capabilities

setInputFormat

public boolean setInputFormat(Instances instanceInfo)
                       throws Exception

Sets the format of the input instances.

Overrides:

setInputFormat in class Filter

Parameters:

instanceInfo - an Instances object containing the input instance structure (any instances contained in the object are ignored - only the structure is required).

Returns:

true because outputFormat can be collected immediately

Throws:

Exception - if the input format can't be set successfully

input

public boolean input(Instance instance)

Input an instance for filtering. Filter requires all training instances be read before producing output.

Overrides:

input in class Filter

Parameters:

instance - the input instance

Returns:

true if the filtered instance may now be collected with output().

Throws:

IllegalStateException - if no input structure has been defined

batchFinished

public boolean batchFinished()

Signify that this batch of input to the filter is finished. Output() may now be called to retrieve the filtered instances.

Overrides:

batchFinished in class Filter

Returns:

true if there are instances pending output

Throws:

IllegalStateException - if no input structure has been defined

getRevision

public String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Overrides:

getRevision in class Filter

Returns:

the revision

main

public static void main(String[] argv)

Main method for testing this class.

Parameters:

argv - should contain arguments to the filter: use -h for help