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, BatchConverter, FileSourcedConverter, IncrementalConverter, Saver, EnvironmentHandler, OptionHandler, RevisionHandler

public class ArffSaver
extends AbstractFileSaver
implements BatchConverter, IncrementalConverter

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: 9515 $

Author:

Stefan Mutter (mutter@cs.waikato.ac.nz)

See Also:

Saver, Serialized Form

Field Summary

Fields inherited from interface weka.core.converters.Saver

BATCH, INCREMENTAL, NONE

Constructor Summary

Constructors

Constructor and Description
ArffSaver() Constructor

Method Summary

Methods

Modifier and Type	Method and Description
String	compressOutputTipText() Returns the tip text for this property
Capabilities	getCapabilities() Returns the Capabilities of this saver.
boolean	getCompressOutput() Gets whether the output data is compressed.
String	getFileDescription() Returns a description of the file type.
String[]	getFileExtensions() Gets all the file extensions used for this type of file
int	getMaxDecimalPlaces() Get the maximum number of decimal places to print
String[]	getOptions() returns the options of the current setup
String	getRevision() Returns the revision string.
String	globalInfo() Returns a string describing this Saver
Enumeration	listOptions() Returns an enumeration describing the available options.
static void	main(String[] args) Main method.
String	maxDecimalPlacesTipText() Returns the tip text for this property.
void	resetOptions() Resets the Saver
void	setCompressOutput(boolean value) Sets whether to compress the output.
void	setDestination(OutputStream output) Sets the destination output stream.
void	setFile(File outputFile) Sets the destination file.
void	setMaxDecimalPlaces(int maxDecimal) Set the maximum number of decimal places to print
void	setOptions(String[] options) Parses the options for this object.
void	writeBatch() Writes a Batch of instances
void	writeIncremental(Instance inst) Saves an instances incrementally.

Methods inherited from class weka.core.converters.AbstractFileSaver

cancel, filePrefix, getFileExtension, getUseRelativePath, getWriter, resetWriter, retrieveDir, retrieveFile, runFileSaver, setDestination, setDir, setDirAndPrefix, setEnvironment, setFilePrefix, setUseRelativePath, useRelativePathTipText

Methods inherited from class weka.core.converters.AbstractSaver

getInstances, getWriteMode, resetStructure, setInstances, setRetrieval, setStructure

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ArffSaver

public ArffSaver()

Constructor

Method Detail

listOptions

public Enumeration 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:

Capabilities

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.