java.lang.Object
weka.filters.Filter
weka.filters.unsupervised.attribute.Copy
所有已实现的接口:
Serializable, CapabilitiesHandler, OptionHandler, RevisionHandler, StreamableFilter, UnsupervisedFilter

public class Copy extends Filter implements UnsupervisedFilter, StreamableFilter, OptionHandler
An instance filter that copies a range of attributes in the dataset. This is used in conjunction with other filters that overwrite attribute values during the course of their operation -- this filter allows the original attributes to be kept as well as the new attributes.

Valid options are:

 -R <index1,index2-index4,...>
  Specify list of columns to copy. First and last are valid
  indexes. (default none)
 -V
  Invert matching sense (i.e. copy all non-specified columns)
版本:
$Revision: 6996 $
作者:
Len Trigg (trigg@cs.waikato.ac.nz)
另请参阅:
  • 构造器详细资料

    • Copy

      public Copy()
  • 方法详细资料

    • listOptions

      public Enumeration listOptions()
      Returns an enumeration describing the available options.
      指定者:
      listOptions 在接口中 OptionHandler
      返回:
      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 <index1,index2-index4,...>
        Specify list of columns to copy. First and last are valid
        indexes. (default none)
       -V
        Invert matching sense (i.e. copy all non-specified columns)
      指定者:
      setOptions 在接口中 OptionHandler
      参数:
      options - the list of options as an array of strings
      抛出:
      Exception - if an option is not supported
    • getOptions

      public String[] getOptions()
      Gets the current settings of the filter.
      指定者:
      getOptions 在接口中 OptionHandler
      返回:
      an array of strings suitable for passing to setOptions
    • getCapabilities

      public Capabilities getCapabilities()
      Returns the Capabilities of this filter.
      指定者:
      getCapabilities 在接口中 CapabilitiesHandler
      覆盖:
      getCapabilities 在类中 Filter
      返回:
      the capabilities of this object
      另请参阅:
    • setInputFormat

      public boolean setInputFormat(Instances instanceInfo) throws Exception
      Sets the format of the input instances.
      覆盖:
      setInputFormat 在类中 Filter
      参数:
      instanceInfo - an Instances object containing the input instance structure (any instances contained in the object are ignored - only the structure is required).
      返回:
      true if the outputFormat may be collected immediately
      抛出:
      Exception - if a problem occurs setting the input format
    • input

      public boolean input(Instance instance)
      Input an instance for filtering. Ordinarily the instance is processed and made available for output immediately. Some filters require all instances be read before producing output.
      覆盖:
      input 在类中 Filter
      参数:
      instance - the input instance
      返回:
      true if the filtered instance may now be collected with output().
      抛出:
      IllegalStateException - if no input format has been defined.
    • globalInfo

      public String globalInfo()
      Returns a string describing this filter
      返回:
      a description of the filter suitable for displaying in the explorer/experimenter gui
    • invertSelectionTipText

      public String invertSelectionTipText()
      Returns the tip text for this property
      返回:
      tip text for this property suitable for displaying in the explorer/experimenter gui
    • getInvertSelection

      public boolean getInvertSelection()
      Get whether the supplied columns are to be removed or kept
      返回:
      true if the supplied columns will be kept
    • setInvertSelection

      public void setInvertSelection(boolean invert)
      Set whether selected columns should be removed or kept. If true the selected columns are kept and unselected columns are copied. If false selected columns are copied and unselected columns are kept.
      Note: use this method before you call setInputFormat(Instances), since the output format is determined in that method.
      参数:
      invert - the new invert setting
    • getAttributeIndices

      public String getAttributeIndices()
      Get the current range selection
      返回:
      a string containing a comma separated list of ranges
    • attributeIndicesTipText

      public String attributeIndicesTipText()
      Returns the tip text for this property
      返回:
      tip text for this property suitable for displaying in the explorer/experimenter gui
    • setAttributeIndices

      public void setAttributeIndices(String rangeList) throws Exception
      Set which attributes are to be copied (or kept if invert is true)
      参数:
      rangeList - a string representing the list of attributes. Since the string will typically come from a user, attributes are indexed from 1.
      eg: first-3,5,6-last
      Note: use this method before you call setInputFormat(Instances), since the output format is determined in that method.
      抛出:
      Exception - if an invalid range list is supplied
    • setAttributeIndicesArray

      public void setAttributeIndicesArray(int[] attributes) throws Exception
      Set which attributes are to be copied (or kept if invert is true)
      参数:
      attributes - an array containing indexes of attributes to select. Since the array will typically come from a program, attributes are indexed from 0.
      Note: use this method before you call setInputFormat(Instances), since the output format is determined in that method.
      抛出:
      Exception - if an invalid set of ranges is supplied
    • getRevision

      public String getRevision()
      Returns the revision string.
      指定者:
      getRevision 在接口中 RevisionHandler
      覆盖:
      getRevision 在类中 Filter
      返回:
      the revision
    • main

      public static void main(String[] argv)
      Main method for testing this class.
      参数:
      argv - should contain arguments to the filter: use -h for help