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## weka.filters
Class MultiFilter

    java.lang.Object
      weka.filters.Filter
          weka.filters.SimpleFilter
              weka.filters.SimpleStreamFilter
                  weka.filters.MultiFilter

All Implemented Interfaces:
  java.io.Serializable, CapabilitiesHandler, OptionHandler, RevisionHandler, StreamableFilter

    public class MultiFilter

extends SimpleStreamFilter

Applies several filters successively. In case all supplied filters are StreamableFilters, it will act as a streamable one, too.

Valid options are:

     -D
      Turns on output of debugging information.

     -F <classname [options]>
      A filter to apply (can be specified multiple times).

Version:
  $Revision: 5501 $
Author:
  FracPete (fracpete at waikato dot ac dot nz)
See Also:
  `StreamableFilter`, Serialized Form

Constructor Summary
`MultiFilter()`

Method Summary
`java.lang.String` | `filtersTipText()` Returns the tip text for this property
`Capabilities` | `getCapabilities()` Returns the Capabilities of this filter.
`Filter` | `getFilter(int index)` Gets a single filter from the set of available filters.
`Filter[]` | `getFilters()` Gets the list of possible filters to choose from.
`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` | `isStreamableFilter()` tests whether all the enclosed filters are streamable
`java.util.Enumeration` | `listOptions()` Returns an enumeration describing the available options.
`static void` | `main(java.lang.String[] args)` Main method for executing this class.
`void` | `setFilters(Filter[] filters)` Sets the list of possible filters to choose from.
`void` | `setOptions(java.lang.String[] options)` Parses a list of options for this object.

Methods inherited from class weka.filters.SimpleStreamFilter
`batchFinished, input`

Methods inherited from class weka.filters.SimpleFilter
`debugTipText, getDebug, setDebug, setInputFormat`

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

### MultiFilter

    public MultiFilter()

Method Detail

### globalInfo

    public java.lang.String globalInfo()

  Returns a string describing this filter

  Specified by:
    `globalInfo` in class `SimpleFilter`
  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`
  Overrides:
    `listOptions` in class `SimpleFilter`
  Returns:
    an enumeration of all the available options.

### setOptions

    public void setOptions(java.lang.String[] options)
                    throws java.lang.Exception

  Parses a list of options for this object.

  Valid options are:

       -D
        Turns on output of debugging information.

       -F <classname [options]>
        A filter to apply (can be specified multiple times).

  Specified by:
    `setOptions` in interface `OptionHandler`
  Overrides:
    `setOptions` in class `SimpleFilter`
  Parameters:
    `options` - the list of options as an array of strings
  Throws:
    `java.lang.Exception` - if an option is not supported
  See Also:
    `SimpleFilter.reset()`

### getOptions

    public java.lang.String[] getOptions()

  Gets the current settings of the filter.

  Specified by:
    `getOptions` in interface `OptionHandler`
  Overrides:
    `getOptions` in class `SimpleFilter`
  Returns:
    an array of strings suitable for passing to setOptions

### 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`

### setFilters

    public void setFilters(Filter[] filters)

  Sets the list of possible filters to choose from. Also resets the state of the filter (this reset doesn't affect the options).

  Parameters:
    `filters` - an array of filters with all options set.
  See Also:
    `reset()`

### getFilters

    public Filter[] getFilters()

  Gets the list of possible filters to choose from.

  Returns:
    the array of Filters

### filtersTipText

    public java.lang.String filtersTipText()

  Returns the tip text for this property

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

### getFilter

    public Filter getFilter(int index)

  Gets a single filter from the set of available filters.

  Parameters:
    `index` - the index of the filter wanted
  Returns:
    the Filter

### isStreamableFilter

    public boolean isStreamableFilter()

  tests whether all the enclosed filters are streamable

  Returns:
    true if all the enclosed filters are streamable

### 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 executing this class.

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

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