类 ChangeDateFormat

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

public class ChangeDateFormat extends Filter implements UnsupervisedFilter, StreamableFilter, OptionHandler
Changes the date format used by a date attribute. This is most useful for converting to a format with less precision, for example, from an absolute date to day of year, etc. This changes the format string, and changes the date values to those that would be parsed by the new format.

Valid options are:

 -C <col>
  Sets the attribute index (default last).
 -F <value index>
  Sets the output date format string (default corresponds to ISO-8601).
版本:
$Revision: 5543 $
作者:
Len Trigg
另请参阅:
  • 构造器详细资料

    • ChangeDateFormat

      public ChangeDateFormat()
  • 方法详细资料

    • 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
    • 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 the input format can't be set successfully
    • input

      public boolean input(Instance instance) throws Exception
      Input an instance for filtering.
      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:
      Exception - if the input format was not set or the date format cannot be parsed
    • 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:

       -C <col>
        Sets the attribute index (default last).
       -F <value index>
        Sets the output date format string (default corresponds to ISO-8601).
      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
    • attributeIndexTipText

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

      public String getAttributeIndex()
      Gets the index of the attribute converted.
      返回:
      the index of the attribute
    • setAttributeIndex

      public void setAttributeIndex(String attIndex)
      Sets the index of the attribute used.
      参数:
      attIndex - the index of the attribute
    • dateFormatTipText

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

      public SimpleDateFormat getDateFormat()
      Get the date format used in output.
      返回:
      the output date format.
    • setDateFormat

      public void setDateFormat(String dateFormat)
      Sets the output date format.
      参数:
      dateFormat - the output date format.
    • setDateFormat

      public void setDateFormat(SimpleDateFormat dateFormat)
      Sets the output date format.
      参数:
      dateFormat - the output date format.
    • 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