weka.filters.unsupervised.instance

## Class RemoveRange

- java.lang.Object
- - weka.filters.Filter
  - - weka.filters.unsupervised.instance.RemoveRange

- All Implemented Interfaces:
    java.io.Serializable, CapabilitiesHandler, CapabilitiesIgnorer, 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: 10215 $
  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.
    `java.lang.String` | `getInstancesIndices()` Gets ranges of instances selected.
    `boolean` | `getInvertSelection()` Gets if selection is to be inverted.
    `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
    `boolean` | `input(Instance instance)` Input an instance for filtering.
    `java.lang.String` | `instancesIndicesTipText()` Returns the tip text for this property
    `java.lang.String` | `invertSelectionTipText()` Returns the tip text for this property
    `java.util.Enumeration<Option>` | `listOptions()` Returns an enumeration describing the available options.
    `static void` | `main(java.lang.String[] argv)` Main method for testing this class.
    `boolean` | `setInputFormat(Instances instanceInfo)` Sets the format of the input instances.
    `void` | `setInstancesIndices(java.lang.String rangeList)` Sets the ranges of instances to be selected.
    `void` | `setInvertSelection(boolean inverse)` Sets if selection is to be inverted.
    `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

    - #### RemoveRange

          public RemoveRange()

  - ### Method Detail

    - #### 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:

           -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`
      Overrides:
        `setOptions` in class `Filter`
      Parameters:
        `options` - the list of options as an array of string.s
      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.

    - #### globalInfo

          public java.lang.String globalInfo()

      Returns a string describing this filter
      Returns:
        a description of the filter suitable for displaying in the GUI.

    - #### instancesIndicesTipText

          public java.lang.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 java.lang.String getInstancesIndices()

      Gets ranges of instances selected.
      Returns:
        a string containing a comma-separated list of ranges

    - #### setInstancesIndices

          public void setInstancesIndices(java.lang.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:
        `java.lang.IllegalArgumentException` - if an invalid range list is supplied

    - #### invertSelectionTipText

          public java.lang.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 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 because outputFormat can be collected immediately
      Throws:
        `java.lang.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:
        `java.lang.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:
        `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[] argv)

      Main method for testing this class.
      Parameters:
        `argv` - should contain arguments to the filter: use -h for help