weka.filters.unsupervised.attribute

Class NumericToDate

java.lang.Object

weka.filters.Filter

weka.filters.SimpleFilter

weka.filters.SimpleBatchFilter

weka.filters.unsupervised.attribute.NumericToDate

All Implemented Interfaces:

Serializable, CapabilitiesHandler, CapabilitiesIgnorer, CommandlineRunnable, OptionHandler, RevisionHandler, WeightedAttributesHandler, WeightedInstancesHandler

public class NumericToDate
extends SimpleBatchFilter
implements WeightedAttributesHandler, WeightedInstancesHandler

A filter for turning numeric attributes into date attributes. The numeric value is assumed to be the number of milliseconds since January 1, 1970, 00:00:00 GMT, corresponding to the given date."

Valid options are:

 -R <col1,col2-col4,...>
  Specifies list of attributes to turn into date ones. Only numeric attributes will be converted.
  First and last are valid indexes.
  (default: first-last)
 

 -V
  Invert matching sense of column indexes.
 

 -F <value index>
  Sets the output date format string (default corresponds to ISO-8601).
 

Version:

$Revision: 14274 $

Author:

eibe (eibe at waikato dot ac dot nz)

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
NumericToDate()

Method Summary

Modifier and Type	Method and Description
String	attributeIndicesTipText() Returns the tip text for this property
String	dateFormatTipText()
String	getAttributeIndices() Gets the current range selection
Capabilities	getCapabilities() Returns the Capabilities of this filter.
SimpleDateFormat	getDateFormat() Get the date format used in output.
boolean	getInvertSelection() Gets whether the supplied columns are to be worked on or the others.
String[]	getOptions() Gets the current settings of the filter.
String	getRevision() Returns the revision string.
String	globalInfo() Returns a string describing this filter
String	invertSelectionTipText() Returns the tip text for this property
Enumeration<Option>	listOptions() Gets an enumeration describing the available options.
static void	main(String[] args) Runs the filter with the given parameters.
void	setAttributeIndices(String value) Sets which attributes are to be turned into date attributes (only numeric attributes among the selection will be transformed).
void	setAttributeIndicesArray(int[] value) Sets which attributes are to be transformed to date attributes (only numeric attributes among the selection will be transformed).
void	setDateFormat(SimpleDateFormat dateFormat) Sets the output date format.
void	setDateFormat(String dateFormat) Sets the output date format.
void	setInvertSelection(boolean value) Sets whether selected columns should be worked on or all the others apart from these.
void	setOptions(String[] options) Parses a given list of options.

Methods inherited from class weka.filters.SimpleBatchFilter

allowAccessToFullInputFormat, batchFinished, input, input

Methods inherited from class weka.filters.SimpleFilter

setInputFormat

Methods inherited from class weka.filters.Filter

batchFilterFile, debugTipText, doNotCheckCapabilitiesTipText, filterFile, getCapabilities, getCopyOfInputFormat, getDebug, getDoNotCheckCapabilities, getOutputFormat, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, mayRemoveInstanceAfterFirstBatchDone, numPendingOutput, output, outputPeek, postExecution, preExecution, run, runFilter, setDebug, setDoNotCheckCapabilities, toString, useFilter, wekaStaticWrapper

Methods inherited from class java.lang.Object

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

Methods inherited from interface weka.core.OptionHandler

makeCopy

Constructor Detail

NumericToDate

public NumericToDate()

Method Detail

globalInfo

public String globalInfo()

Returns a string describing this filter

Specified by:

globalInfo in class SimpleFilter

Returns:

a description of the filter suitable for displaying in the explorer/experimenter gui

listOptions

public Enumeration<Option> listOptions()

Gets an enumeration describing the available options.

Specified by:

listOptions in interface OptionHandler

Overrides:

listOptions in class Filter

Returns:

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 <col1,col2-col4,...>
  Specifies list of attributes to turn into date ones. Only numeric attributes will be converted.
  First and last are valid indexes.
  (default: first-last)
 

 -V
  Invert matching sense of column indexes.
 

 -F <value index>
  Sets the output date format string (default corresponds to ISO-8601).
 

Specified by:

setOptions in interface OptionHandler

Overrides:

setOptions in class Filter

Parameters:

options - the list of options as an array of strings

Throws:

Exception - if an option is not supported

getOptions

public String[] getOptions()

Gets the current settings of the filter.

Specified by:

getOptions in interface OptionHandler

Overrides:

getOptions in class Filter

Returns:

an array of strings suitable for passing to setOptions

dateFormatTipText

public String dateFormatTipText()

Returns:

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

getDateFormat

public SimpleDateFormat getDateFormat()

Get the date format used in output.

Returns:

the output date format.

setDateFormat

public void setDateFormat(String dateFormat)

Sets the output date format.

Parameters:

dateFormat - the output date format.

setDateFormat

public void setDateFormat(SimpleDateFormat dateFormat)

Sets the output date format.

Parameters:

dateFormat - the output date format.

invertSelectionTipText

public String invertSelectionTipText()

Returns the tip text for this property

Returns:

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

getInvertSelection

public boolean getInvertSelection()

Gets whether the supplied columns are to be worked on or the others.

Returns:

true if the supplied columns will be worked on

setInvertSelection

public void setInvertSelection(boolean value)

Sets whether selected columns should be worked on or all the others apart from these. If true all the other columns are considered for conversion.

Parameters:

value - the new invert setting

attributeIndicesTipText

public String attributeIndicesTipText()

Returns the tip text for this property

Returns:

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

getAttributeIndices

public String getAttributeIndices()

Gets the current range selection

Returns:

a string containing a comma separated list of ranges

setAttributeIndices

public void setAttributeIndices(String value)

Sets which attributes are to be turned into date attributes (only numeric attributes among the selection will be transformed).

Parameters:

value - 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

Throws:

IllegalArgumentException - if an invalid range list is supplied

setAttributeIndicesArray

public void setAttributeIndicesArray(int[] value)

Sets which attributes are to be transformed to date attributes (only numeric attributes among the selection will be transformed).

Parameters:

value - an array containing indexes of attributes to turn into date ones. Since the array will typically come from a program, attributes are indexed from 0.

Throws:

IllegalArgumentException - if an invalid set of ranges is supplied

getCapabilities

public Capabilities getCapabilities()

Returns the Capabilities of this filter.

Specified by:

getCapabilities in interface CapabilitiesHandler

Overrides:

getCapabilities in class Filter

Returns:

the capabilities of this object

See Also:

Capabilities

getRevision

public String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Overrides:

getRevision in class Filter

Returns:

the revision

main

public static void main(String[] args)

Runs the filter with the given parameters. Use -h to list options.

Parameters:

args - the commandline options