weka.filters.unsupervised.attribute
Class AddID

java.lang.Object
  extended by weka.filters.Filter
      extended by weka.filters.unsupervised.attribute.AddID
All Implemented Interfaces:
java.io.Serializable, CapabilitiesHandler, OptionHandler, RevisionHandler, UnsupervisedFilter

public class AddID
extends Filter
implements UnsupervisedFilter, OptionHandler

An instance filter that adds an ID attribute to the dataset. The new attribute contains a unique ID for each instance.
Note: The ID is not reset for the second batch of files (using -b and -r and -s).

Valid options are:

 -C <index>
  Specify where to insert the ID. First and last
  are valid indexes.(default first)
 -N <name>
  Name of the new attribute.
  (default = 'ID')

Version:
$Revision: 1.6 $
Author:
fracpete (fracpete at waikato dot ac dot nz)
See Also:
Serialized Form

Constructor Summary
AddID()
           
 
Method Summary
 java.lang.String attributeNameTipText()
          Returns the tip text for this property
 boolean batchFinished()
          Signify that this batch of input to the filter is finished.
 java.lang.String getAttributeName()
          Get the name of the attribute to be created
 Capabilities getCapabilities()
          Returns the Capabilities of this filter.
 java.lang.String getIDIndex()
          Get the index of the attribute used.
 java.lang.String[] getOptions()
          Gets the current settings of the filter.
 java.lang.String getRevision()
          Returns the revision string.
 java.lang.String globalInfo()
          Returns a string describing this filter
 java.lang.String IDIndexTipText()
          Returns the tip text for this property
 boolean input(Instance instance)
          Input an instance for filtering.
 java.util.Enumeration listOptions()
          Returns an enumeration describing the available options.
static void main(java.lang.String[] args)
          Main method for testing this class.
 void setAttributeName(java.lang.String value)
          Set the new attribute's name
 void setIDIndex(java.lang.String value)
          Sets index of the attribute used.
 boolean setInputFormat(Instances instanceInfo)
          Sets the format of the input instances.
 void setOptions(java.lang.String[] options)
          Parses a given list of options.
 
Methods inherited from class weka.filters.Filter
batchFilterFile, filterFile, getCapabilities, getOutputFormat, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, numPendingOutput, output, outputPeek, toString, useFilter, wekaStaticWrapper
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

AddID

public AddID()
Method Detail

globalInfo

public java.lang.String globalInfo()
Returns a string describing this filter

Returns:
a description of the filter suitable for displaying in the explorer/experimenter gui

listOptions

public java.util.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(java.lang.String[] options)
                throws java.lang.Exception
Parses a given list of options.

Valid options are:

 -C <index>
  Specify where to insert the ID. First and last
  are valid indexes.(default first)
 -N <name>
  Name of the new attribute.
  (default = 'ID')

Specified by:
setOptions in interface OptionHandler
Parameters:
options - the list of options as an array of strings
Throws:
java.lang.Exception - if an option is not supported

getOptions

public java.lang.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

attributeNameTipText

public java.lang.String attributeNameTipText()
Returns the tip text for this property

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

getAttributeName

public java.lang.String getAttributeName()
Get the name of the attribute to be created

Returns:
the current attribute name

setAttributeName

public void setAttributeName(java.lang.String value)
Set the new attribute's name

Parameters:
value - the new name

IDIndexTipText

public java.lang.String IDIndexTipText()
Returns the tip text for this property

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

getIDIndex

public java.lang.String getIDIndex()
Get the index of the attribute used.

Returns:
the index of the attribute

setIDIndex

public void setIDIndex(java.lang.String value)
Sets index of the attribute used.

Parameters:
value - the index of the attribute

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 java.lang.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 if the outputFormat may be collected immediately
Throws:
java.lang.Exception - if the format couldn'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:
java.lang.IllegalStateException - if no input format has been set.

batchFinished

public boolean batchFinished()
Signify that this batch of input to the filter is finished. If the filter requires all instances prior to filtering, output() may now be called to retrieve the filtered instances.

Overrides:
batchFinished in class Filter
Returns:
true if there are instances pending output
Throws:
java.lang.IllegalStateException - if no input structure has been defined

getRevision

public java.lang.String getRevision()
Returns the revision string.

Specified by:
getRevision in interface RevisionHandler
Returns:
the revision

main

public static void main(java.lang.String[] args)
Main method for testing this class.

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