weka.core.converters
Class CSVSaver

java.lang.Object
  weka.core.converters.AbstractSaver
      weka.core.converters.AbstractFileSaver
          weka.core.converters.CSVSaver

All Implemented Interfaces:

java.io.Serializable, CapabilitiesHandler, BatchConverter, FileSourcedConverter, IncrementalConverter, Saver, EnvironmentHandler, OptionHandler, RevisionHandler

public class CSVSaver
extends AbstractFileSaver
implements BatchConverter, IncrementalConverter, FileSourcedConverter

Writes to a destination that is in CSV (comma-separated values) format. The column separator can be chosen (default is ',') as well as the value representing missing values (default is '?').

Valid options are:

 -F <separator>
  The field separator to be used.
  '\t' can be used as well.
  (default: ',')

 -M <str>
  The string representing a missing value.
  (default: ?)

 -i <the input file>
  The input file

 -o <the output file>
  The output file

Version:

$Revision: 6098 $

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

CSVSaver()
Constructor.

Method Summary

java.lang.String	fieldSeparatorTipText() Returns the tip text for this property.
Capabilities	getCapabilities() Returns the Capabilities of this saver.
java.lang.String	getFieldSeparator() Returns the character used as column separator.
java.lang.String	getFileDescription() Returns a description of the file type.
java.lang.String	getMissingValue() Returns the current placeholder for missing values.
java.lang.String[]	getOptions() Gets the current settings of the Classifier.
java.lang.String	getRevision() Returns the revision string.
java.lang.String	globalInfo() Returns a string describing this Saver.
java.util.Enumeration	listOptions() Returns an enumeration describing the available options.
static void	main(java.lang.String[] args) Main method.
java.lang.String	missingValueTipText() Returns the tip text for this property.
void	resetOptions() Resets the Saver.
void	setFieldSeparator(java.lang.String value) Sets the character used as column separator.
void	setMissingValue(java.lang.String value) Sets the placeholder for missing values.
void	setOptions(java.lang.String[] options) Parses a given list of options.
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, getFileExtensions, getUseRelativePath, getWriter, resetWriter, retrieveDir, retrieveFile, runFileSaver, setDestination, setDestination, setDir, setDirAndPrefix, setEnvironment, setFile, 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

Methods inherited from interface weka.core.converters.FileSourcedConverter

getFileExtension, getFileExtensions, getUseRelativePath, retrieveFile, setFile, setUseRelativePath

Constructor Detail

CSVSaver

public CSVSaver()

Constructor.

Method Detail

globalInfo

public java.lang.String globalInfo()

Returns a string describing this Saver.

Returns:

a description of the Saver 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 AbstractFileSaver

Returns:

an enumeration of all the available options.

setOptions

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

Parses a given list of options.

Valid options are:

 -F <separator>
  The field separator to be used.
  '\t' can be used as well.
  (default: ',')

 -M <str>
  The string representing a missing value.
  (default: ?)

 -i <the input file>
  The input file

 -o <the output file>
  The output file

Specified by:

setOptions in interface OptionHandler

Overrides:

setOptions in class AbstractFileSaver

Parameters:

options - the list of options as an array of strings

Throws:

java.lang.Exception - if an option is not supported

getOptions

public java.lang.String[] getOptions()

Gets the current settings of the Classifier.

Specified by:

getOptions in interface OptionHandler

Overrides:

getOptions in class AbstractFileSaver

Returns:

an array of strings suitable for passing to setOptions

setFieldSeparator

public void setFieldSeparator(java.lang.String value)

Sets the character used as column separator.

Parameters:

value - the character to use

getFieldSeparator

public java.lang.String getFieldSeparator()

Returns the character used as column separator.

Returns:

the character to use

fieldSeparatorTipText

public java.lang.String fieldSeparatorTipText()

Returns the tip text for this property.

Returns:

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

setMissingValue

public void setMissingValue(java.lang.String value)

Sets the placeholder for missing values.

Parameters:

value - the placeholder

getMissingValue

public java.lang.String getMissingValue()

Returns the current placeholder for missing values.

Returns:

the placeholder

missingValueTipText

public java.lang.String missingValueTipText()

Returns the tip text for this property.

Returns:

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

getFileDescription

public java.lang.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

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 java.io.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:

java.io.IOException - throws IOEXception if an instance cannot be saved incrementally.

writeBatch

public void writeBatch()
                throws java.io.IOException

Writes a Batch of instances.

Specified by:

writeBatch in interface Saver

Specified by:

writeBatch in class AbstractSaver

Throws:

java.io.IOException - throws IOException if saving in batch mode is not possible

getRevision

public java.lang.String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Returns:

the revision

main

public static void main(java.lang.String[] args)

Main method.

Parameters:

args - should contain the options of a Saver.