Package weka.core.converters

Class ArffSaver

java.lang.Object
weka.core.converters.AbstractSaver
weka.core.converters.AbstractFileSaver
weka.core.converters.ArffSaver
All Implemented Interfaces:
Serializable, CapabilitiesHandler, CapabilitiesIgnorer, BatchConverter, FileSourcedConverter, IncrementalConverter, Saver, EnvironmentHandler, OptionHandler, RevisionHandler, WeightedInstancesHandler
public class ArffSaver extends AbstractFileSaver implements BatchConverter, IncrementalConverter, WeightedInstancesHandler
Writes to a destination in arff text format.

Valid options are: 

 -i <the input file>
  The input file
 
 -o <the output file>
  The output file
 
 -compress
  Compresses the data (uses '.arff.gz' as extension instead of '.arff')
  (default: off)
 
 -decimal <num>
  The maximum number of digits to print after the decimal
  place for numeric values (default: 6)
Version:
$Revision: 14861 $
Author:
Stefan Mutter (mutter@cs.waikato.ac.nz)
See Also:

  • Constructor Details

    • ArffSaver

      public ArffSaver()
      Constructor

  • Method Details

    • listOptions

      public Enumeration<Option> listOptions()
      Returns an enumeration describing the available options.
      Specified by:
      listOptions in interface OptionHandler
      Overrides:
      listOptions in class AbstractFileSaver
      Returns:
      an enumeration of all the available options.

    • getOptions

      public String[] getOptions()
      returns the options of the current setup
      Specified by:
      getOptions in interface OptionHandler
      Overrides:
      getOptions in class AbstractFileSaver
      Returns:
      the current options

    • setOptions

      public void setOptions(String[] options) throws Exception
      Parses the options for this object.

      Valid options are: 

       -i <the input file>
  The input file
 
       -o <the output file>
  The output file
 
       -compress
  Compresses the data (uses '.arff.gz' as extension instead of '.arff')
  (default: off)
 
       -decimal <num>
  The maximum number of digits to print after the decimal
  place for numeric values (default: 6)
      Specified by:
      setOptions in interface OptionHandler
      Overrides:
      setOptions in class AbstractFileSaver
      Parameters:
      options - the options to use
      Throws:
      Exception - if setting of options fails

    • setMaxDecimalPlaces

      public void setMaxDecimalPlaces(int maxDecimal)
      Set the maximum number of decimal places to print
      Parameters:
      maxDecimal - the maximum number of decimal places to print

    • getMaxDecimalPlaces

      public int getMaxDecimalPlaces()
      Get the maximum number of decimal places to print
      Returns:
      the maximum number of decimal places to print

    • maxDecimalPlacesTipText

      public String maxDecimalPlacesTipText()
      Returns the tip text for this property.
      Returns:
      tip text for this property suitable for displaying in the explorer/experimenter gui

    • compressOutputTipText

      public String compressOutputTipText()
      Returns the tip text for this property
      Returns:
      tip text for this property suitable for displaying in the explorer/experimenter gui

    • getCompressOutput

      public boolean getCompressOutput()
      Gets whether the output data is compressed.
      Returns:
      true if the output data is compressed

    • setCompressOutput

      public void setCompressOutput(boolean value)
      Sets whether to compress the output.
      Parameters:
      value - if truee the output will be compressed

    • globalInfo

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

    • getFileDescription

      public String getFileDescription()
      Returns a description of the file type.
      Specified by:
      getFileDescription in interface FileSourcedConverter
      Specified by:
      getFileDescription in class AbstractFileSaver
      Returns:
      a short file description

    • getFileExtensions

      public String[] getFileExtensions()
      Gets all the file extensions used for this type of file
      Specified by:
      getFileExtensions in interface FileSourcedConverter
      Overrides:
      getFileExtensions in class AbstractFileSaver
      Returns:
      the file extensions

    • setFile

      public void setFile(File outputFile) throws IOException
      Sets the destination file.
      Specified by:
      setFile in interface FileSourcedConverter
      Specified by:
      setFile in interface Saver
      Overrides:
      setFile in class AbstractFileSaver
      Parameters:
      outputFile - the destination file.
      Throws:
      IOException - throws an IOException if file cannot be set

    • setDestination

      public void setDestination(OutputStream output) throws IOException
      Sets the destination output stream.
      Specified by:
      setDestination in interface Saver
      Overrides:
      setDestination in class AbstractFileSaver
      Parameters:
      output - the output stream.
      Throws:
      IOException - throws an IOException if destination cannot be set

    • resetOptions

      public void resetOptions()
      Resets the Saver
      Overrides:
      resetOptions in class AbstractFileSaver

    • getCapabilities

      public Capabilities getCapabilities()
      Returns the Capabilities of this saver.
      Specified by:
      getCapabilities in interface CapabilitiesHandler
      Overrides:
      getCapabilities in class AbstractSaver
      Returns:
      the capabilities of this object
      See Also:

    • writeIncremental

      public void writeIncremental(Instance inst) throws IOException
      Saves an instances incrementally. Structure has to be set by using the setStructure() method or setInstances() method.
      Specified by:
      writeIncremental in interface Saver
      Overrides:
      writeIncremental in class AbstractSaver
      Parameters:
      inst - the instance to save
      Throws:
      IOException - throws IOEXception if an instance cannot be saved incrementally.

    • writeBatch

      public void writeBatch() throws IOException
      Writes a Batch of instances
      Specified by:
      writeBatch in interface Saver
      Specified by:
      writeBatch in class AbstractSaver
      Throws:
      IOException - throws IOException if saving in batch mode is not possible

    • getRevision

      public String getRevision()
      Returns the revision string.
      Specified by:
      getRevision in interface RevisionHandler
      Returns:
      the revision

    • main

      public static void main(String[] args)
      Main method.
      Parameters:
      args - should contain the options of a Saver.