weka.filters.unsupervised.attribute

## Class AddID

- java.lang.Object
- - weka.filters.Filter
  - - weka.filters.unsupervised.attribute.AddID

- All Implemented Interfaces:
    java.io.Serializable, CapabilitiesHandler, CapabilitiesIgnorer, 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: 10215 $
  Author:
    fracpete (fracpete at waikato dot ac dot nz)
  See Also:
    Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `AddID()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `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<Option>` | `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, debugTipText, doNotCheckCapabilitiesTipText, filterFile, getCapabilities, getDebug, getDoNotCheckCapabilities, getOutputFormat, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, mayRemoveInstanceAfterFirstBatchDone, numPendingOutput, output, outputPeek, runFilter, setDebug, setDoNotCheckCapabilities, 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<Option> listOptions()

      Returns an enumeration describing the available options.
      Specified by:
        `listOptions` in interface `OptionHandler`
      Overrides:
        `listOptions` in class `Filter`
      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`
      Overrides:
        `setOptions` in class `Filter`
      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`
      Overrides:
        `getOptions` in class `Filter`
      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`
      Overrides:
        `getRevision` in class `Filter`
      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